Thornburg Short Duration Municipal Fund

SYMBOL: TLMAX

Morningstar Rating • Info

Overall Morningstar Rating among 207 Muni National Short funds, based on risk-adjusted returns for class A shares, using a weighted average of the funds three-, five-, and ten-year ratings: respectively, 3 stars, 3 stars and 2 stars among 207, 194 and 151 funds, as of 31 Jan 2026.

As of 31 Jan 2026

Fund Assets

$111.3 M

As of 31 Jan 2026

NAV

$12.01

As of 20 Feb 2026

Change

$0.00

As of 20 Feb 2026

YTD NAV Performance

1.01%

As of 20 Feb 2026

Asset Category:

Municipal Bond

Fund Benchmark:

ICE BofA 1-3 Year U.S. Municipal Securities Index

Portfolio Managers

David Ashley, CFA

Portfolio Manager and Managing Director

Eve Lando, JD

Portfolio Manager and Managing Director

Craig Mauermann, ChFC

Portfolio Manager and Managing Director

Overview Performance Fund Facts Characteristics Portfolio Portfolio Managers Literature

Overview

Why Invest in This Fund?

Actively managed diversified portfolio of high-quality municipal bonds with an average duration of no more than three years.
Proven bottom-up fundamental approach that incorporates a top-down macroeconomic overlay to identify what we perceive to be the most attractive opportunities on a relative value basis across geographic regions, sectors, issuers and revenue streams.
Income-seeking fund that aims for a stable net asset value, making it attractive for those with a short investment horizon, and is positioned to quickly take advantage of any increases in short-term interest rates.

Investment Objective

The fund’s goal is to provide investors with current income exempt from federal income tax, consistent with preservation of capital.

Investment Approach

The fund is an actively managed diversified portfolio of municipal bonds. To reduce changes in its share value compared to longer duration fixed income portfolios, the fund normally maintains an average duration of no more than three years. The management team seeks to match municipal market structure and deal flow through a relative value framework that operates across geography, sectors, issuers and revenue streams. The strategy maintains exposure across the maturity spectrum to manage duration, hedge against interest rate fluctuations and limit taxable events.

Returns

(As of 31 Dec 2025)

YTD

10y

Inception

Total Return with Sales Charge (%)

1.23

2.40

0.87

0.96

0.84

Total Return without Sales Charge (%)

3.53

3.17

1.32

1.11

0.97

ICE BofA 1-3 Year U.S. Municipal Securities Index (%)

3.76

3.25

1.59

1.60

1.46

Morningstar Category Avg. (%)

3.86

3.43

1.52

1.58

—

Morningstar Quartile

—

Morningstar Quartile # of Funds

—

215

199

186

145

—

YTD

10y

Inception

Total Return with Sales Charge (%)

-1.73

1.23

2.26

0.95

0.98

0.87

Total Return without Sales Charge (%)

0.49

3.52

3.05

1.40

1.14

1.00

ICE BofA 1-3 Year U.S. Municipal Securities Index (%)

0.61

3.83

3.12

1.67

1.62

1.50

Morningstar Category Avg. (%)

0.59

3.97

3.25

1.58

—

Morningstar Quartile

—

Morningstar Quartile # of Funds

—

223

207

194

151

—

YTD

10y

Inception

Total Return with Sales Charge (%)

1.23

7.38

4.42

10.01

10.55

Total Return without Sales Charge (%)

3.53

9.82

6.78

11.70

12.25

ICE BofA 1-3 Year U.S. Municipal Securities Index (%)

3.76

10.06

8.19

17.22

18.96

YTD

10y

Inception

Total Return with Sales Charge (%)

-1.73

1.23

6.94

4.83

10.28

11.09

Total Return without Sales Charge (%)

0.49

3.52

9.45

7.20

11.97

12.81

ICE BofA 1-3 Year U.S. Municipal Securities Index (%)

0.61

3.83

9.64

8.64

17.39

19.68

2020

2021

2022

2023

2024

2025

Total Return with Sales Charge (%)

-0.65

-2.46

-4.69

1.16

0.19

1.23

ICE BofA 1-3 Year U.S. Municipal Securities Index (%)

2.16

0.34

-2.03

3.35

2.63

3.76

Periods less than one year are not annualized.

Performance data shown represents past performance and is no guarantee of future results. Investment return and principal value will fluctuate so shares, when redeemed, may be worth more or less than their original cost. Current performance may be lower or higher than quoted.

Source: Confluence

Morningstar quartile ranking for Muni National Short category is based on total returns before sales charges.

The maximum sales charge for the fund’s A shares is 2.25%. There is no up-front sales charge for the I shares.

Share class inception dates: A and I shares, 30 Dec 2013.

Fund Fees

(As of 1 Feb 2026)

Gross Expense Ratio (%)

1.25

Net Expense Ratio (%)

0.70

Expense Ratios - Expressed as a percentage of total fund assets and include management fees and operating costs. Expense ratios fluctuate over time and the expense ratio in the prospectus may differ from the actual expense ratio. The fund's total return includes the deduction of expenses.

Thornburg Investment Management and/or Thornburg Securities LLC have contractually agreed to waive fees and reimburse expenses through at least 1 February 2027, for some of the share classes; these are reflected in the net expense ratio. For more detailed information on fund expenses and waivers/reimbursements, please see the fund's prospectus.

Hypothetical Growth of $10,000

            Categories,A Shares,ICE BofA 1-3 Year U.S. Municipal Securities Index
            2013-12-30,9848,10000
2013-12-31,9848,10000
2014-01-31,9857,10020
2014-02-28,9877,10040
2014-03-31,9854,10025
2014-04-30,9863,10039
2014-05-31,9880,10054
2014-06-30,9882,10059
2014-07-31,9884,10063
2014-08-31,9893,10072
2014-09-30,9887,10070
2014-10-31,9897,10076
2014-11-30,9898,10082
2014-12-31,9882,10072
2015-01-31,9906,10102
2015-02-28,9892,10103
2015-03-31,9884,10098
2015-04-30,9877,10099
2015-05-31,9862,10091
2015-06-30,9872,10099
2015-07-31,9889,10122
2015-08-31,9891,10136
2015-09-30,9909,10156
2015-10-31,9918,10170
2015-11-30,9904,10150
2015-12-31,9896,10148
2016-01-31,9922,10195
2016-02-29,9940,10219
2016-03-31,9926,10199
2016-04-30,9929,10218
2016-05-31,9923,10212
2016-06-30,9951,10247
2016-07-31,9961,10268
2016-08-31,9946,10262
2016-09-30,9924,10229
2016-10-31,9926,10230
2016-11-30,9888,10166
2016-12-31,9898,10181
2017-01-31,9921,10227
2017-02-28,9944,10270
2017-03-31,9941,10264
2017-04-30,9963,10287
2017-05-31,9985,10311
2017-06-30,9968,10298
2017-07-31,9991,10329
2017-08-31,10030,10358
2017-09-30,10022,10342
2017-10-31,10012,10332
2017-11-30,9987,10268
2017-12-31,9986,10282
2018-01-31,9993,10306
2018-02-28,10002,10319
2018-03-31,9993,10311
2018-04-30,9993,10294
2018-05-31,10008,10335
2018-06-30,10023,10372
2018-07-31,10030,10399
2018-08-31,10031,10400
2018-09-30,10024,10371
2018-10-31,10025,10370
2018-11-30,10044,10415
2018-12-31,10070,10462
2019-01-31,10095,10505
2019-02-28,10117,10532
2019-03-31,10144,10569
2019-04-30,10148,10573
2019-05-31,10176,10624
2019-06-30,10204,10660
2019-07-31,10222,10705
2019-08-31,10240,10723
2019-09-30,10226,10695
2019-10-31,10244,10726
2019-11-30,10253,10744
2019-12-31,10263,10763
2020-01-31,10297,10814
2020-02-29,10315,10842
2020-03-31,10211,10751
2020-04-30,10170,10778
2020-05-31,10279,10912
2020-06-30,10304,10923
2020-07-31,10329,10964
2020-08-31,10336,10965
2020-09-30,10343,10974
2020-10-31,10338,10962
2020-11-30,10342,10981
2020-12-31,10353,10995
2021-01-31,10363,11016
2021-02-28,10342,11004
2021-03-31,10352,11016
2021-04-30,10362,11030
2021-05-31,10356,11036
2021-06-30,10349,11035
2021-07-31,10368,11053
2021-08-31,10360,11048
2021-09-30,10337,11033
2021-10-31,10330,11029
2021-11-30,10324,11033
2021-12-31,10327,11032
2022-01-31,10203,10920
2022-02-28,10183,10895
2022-03-31,10068,10775
2022-04-30,10015,10704
2022-05-31,10064,10798
2022-06-30,10064,10797
2022-07-31,10124,10881
2022-08-31,10042,10768
2022-09-30,9936,10640
2022-10-31,9942,10646
2022-11-30,10058,10803
2022-12-31,10066,10808
2023-01-31,10151,10916
2023-02-28,10076,10799
2023-03-31,10182,10928
2023-04-30,10160,10891
2023-05-31,10130,10863
2023-06-30,10195,10916
2023-07-31,10218,10935
2023-08-31,10225,10936
2023-09-30,10164,10872
2023-10-31,10181,10892
2023-11-30,10354,11082
2023-12-31,10414,11170
2024-01-31,10414,11170
2024-02-29,10423,11181
2024-03-31,10432,11176
2024-04-30,10433,11159
2024-05-31,10450,11175
2024-06-30,10504,11250
2024-07-31,10576,11334
2024-08-31,10639,11423
2024-09-30,10685,11471
2024-10-31,10659,11428
2024-11-30,10695,11479
2024-12-31,10678,11464
2025-01-31,10732,11527
2025-02-28,10787,11580
2025-03-31,10778,11581
2025-04-30,10761,11565
2025-05-31,10815,11625
2025-06-30,10870,11694
2025-07-31,10916,11755
2025-08-31,10981,11814
2025-09-30,10999,11833
2025-10-31,11000,11824
2025-11-30,11018,11857
2025-12-31,11055,11896
2026-01-31,11109,11968

Hypothetical Growth of $10,000

(As of 31 Jan 2026)

(Hypothetical Growth of $10,000 vs ICE BofA 1-3 Year U.S. Municipal Securities Index)

                        Categories,A Shares,ICE BofA 1-3 Year U.S. Municipal Securities Index
                        2025-01-31,9779,10000
2025-02-28,9829,10046
2025-03-31,9821,10047
2025-04-30,9805,10033
2025-05-31,9855,10085
2025-06-30,9905,10145
2025-07-31,9947,10198
2025-08-31,10005,10249
2025-09-30,10023,10266
2025-10-31,10023,10258
2025-11-30,10040,10286
2025-12-31,10073,10320
2026-01-31,10123,10383

                        Categories,A Shares,ICE BofA 1-3 Year U.S. Municipal Securities Index
                        2023-01-31,9771,10000
2023-02-28,9700,9893
2023-03-31,9801,10011
2023-04-30,9780,9977
2023-05-31,9752,9952
2023-06-30,9814,10001
2023-07-31,9836,10018
2023-08-31,9843,10019
2023-09-30,9784,9960
2023-10-31,9800,9978
2023-11-30,9967,10153
2023-12-31,10025,10233
2024-01-31,10025,10233
2024-02-29,10034,10243
2024-03-31,10042,10238
2024-04-30,10043,10223
2024-05-31,10060,10238
2024-06-30,10111,10307
2024-07-31,10180,10383
2024-08-31,10241,10464
2024-09-30,10285,10509
2024-10-31,10260,10469
2024-11-30,10295,10516
2024-12-31,10279,10503
2025-01-31,10330,10560
2025-02-28,10383,10609
2025-03-31,10375,10609
2025-04-30,10358,10595
2025-05-31,10411,10650
2025-06-30,10464,10713
2025-07-31,10508,10769
2025-08-31,10570,10823
2025-09-30,10588,10841
2025-10-31,10588,10832
2025-11-30,10606,10862
2025-12-31,10641,10898
2026-01-31,10694,10964

                        Categories,A Shares,ICE BofA 1-3 Year U.S. Municipal Securities Index
                        2021-01-31,9779,10000
2021-02-28,9759,9988
2021-03-31,9768,9999
2021-04-30,9778,10012
2021-05-31,9772,10018
2021-06-30,9766,10016
2021-07-31,9783,10033
2021-08-31,9776,10029
2021-09-30,9754,10015
2021-10-31,9748,10011
2021-11-30,9742,10015
2021-12-31,9744,10014
2022-01-31,9628,9912
2022-02-28,9608,9889
2022-03-31,9501,9781
2022-04-30,9451,9716
2022-05-31,9497,9802
2022-06-30,9497,9801
2022-07-31,9553,9877
2022-08-31,9476,9774
2022-09-30,9376,9659
2022-10-31,9382,9664
2022-11-30,9491,9806
2022-12-31,9499,9811
2023-01-31,9578,9909
2023-02-28,9508,9802
2023-03-31,9608,9920
2023-04-30,9587,9886
2023-05-31,9559,9861
2023-06-30,9621,9909
2023-07-31,9642,9926
2023-08-31,9649,9927
2023-09-30,9591,9869
2023-10-31,9607,9887
2023-11-30,9770,10060
2023-12-31,9827,10140
2024-01-31,9827,10139
2024-02-29,9836,10150
2024-03-31,9844,10145
2024-04-30,9844,10130
2024-05-31,9861,10144
2024-06-30,9912,10212
2024-07-31,9980,10288
2024-08-31,10039,10369
2024-09-30,10082,10413
2024-10-31,10058,10373
2024-11-30,10092,10420
2024-12-31,10076,10407
2025-01-31,10127,10463
2025-02-28,10178,10512
2025-03-31,10170,10512
2025-04-30,10154,10498
2025-05-31,10206,10552
2025-06-30,10258,10615
2025-07-31,10301,10671
2025-08-31,10361,10724
2025-09-30,10379,10741
2025-10-31,10379,10733
2025-11-30,10397,10763
2025-12-31,10431,10798
2026-01-31,10483,10864

                        Categories,A Shares,ICE BofA 1-3 Year U.S. Municipal Securities Index
                        2016-01-31,9849,10000
2016-02-29,9867,10024
2016-03-31,9853,10004
2016-04-30,9856,10023
2016-05-31,9850,10016
2016-06-30,9877,10052
2016-07-31,9887,10072
2016-08-31,9873,10065
2016-09-30,9852,10033
2016-10-31,9853,10034
2016-11-30,9816,9972
2016-12-31,9825,9987
2017-01-31,9848,10032
2017-02-28,9871,10074
2017-03-31,9868,10068
2017-04-30,9890,10090
2017-05-31,9912,10114
2017-06-30,9895,10101
2017-07-31,9918,10131
2017-08-31,9957,10160
2017-09-30,9948,10144
2017-10-31,9938,10134
2017-11-30,9914,10072
2017-12-31,9913,10085
2018-01-31,9920,10109
2018-02-28,9928,10121
2018-03-31,9919,10114
2018-04-30,9920,10098
2018-05-31,9934,10137
2018-06-30,9950,10174
2018-07-31,9956,10200
2018-08-31,9957,10201
2018-09-30,9950,10173
2018-10-31,9951,10172
2018-11-30,9970,10216
2018-12-31,9996,10262
2019-01-31,10021,10304
2019-02-28,10042,10331
2019-03-31,10070,10367
2019-04-30,10074,10370
2019-05-31,10101,10421
2019-06-30,10129,10456
2019-07-31,10147,10501
2019-08-31,10165,10518
2019-09-30,10151,10491
2019-10-31,10169,10521
2019-11-30,10178,10539
2019-12-31,10188,10557
2020-01-31,10221,10607
2020-02-29,10239,10635
2020-03-31,10136,10545
2020-04-30,10095,10572
2020-05-31,10203,10704
2020-06-30,10229,10714
2020-07-31,10253,10754
2020-08-31,10260,10756
2020-09-30,10267,10764
2020-10-31,10262,10753
2020-11-30,10266,10771
2020-12-31,10277,10785
2021-01-31,10287,10806
2021-02-28,10266,10793
2021-03-31,10276,10805
2021-04-30,10286,10819
2021-05-31,10280,10825
2021-06-30,10273,10824
2021-07-31,10291,10842
2021-08-31,10284,10837
2021-09-30,10261,10822
2021-10-31,10254,10818
2021-11-30,10248,10822
2021-12-31,10251,10821
2022-01-31,10128,10711
2022-02-28,10108,10686
2022-03-31,9994,10569
2022-04-30,9942,10499
2022-05-31,9990,10592
2022-06-30,9990,10591
2022-07-31,10049,10673
2022-08-31,9968,10562
2022-09-30,9863,10437
2022-10-31,9869,10443
2022-11-30,9984,10596
2022-12-31,9992,10602
2023-01-31,10076,10707
2023-02-28,10002,10592
2023-03-31,10107,10719
2023-04-30,10085,10682
2023-05-31,10056,10656
2023-06-30,10121,10708
2023-07-31,10143,10726
2023-08-31,10150,10727
2023-09-30,10089,10665
2023-10-31,10106,10684
2023-11-30,10278,10871
2023-12-31,10338,10957
2024-01-31,10338,10956
2024-02-29,10347,10968
2024-03-31,10355,10962
2024-04-30,10356,10946
2024-05-31,10374,10962
2024-06-30,10427,11035
2024-07-31,10498,11117
2024-08-31,10561,11204
2024-09-30,10606,11252
2024-10-31,10580,11210
2024-11-30,10616,11260
2024-12-31,10599,11245
2025-01-31,10653,11307
2025-02-28,10707,11359
2025-03-31,10699,11359
2025-04-30,10681,11344
2025-05-31,10736,11403
2025-06-30,10791,11470
2025-07-31,10836,11531
2025-08-31,10900,11588
2025-09-30,10919,11607
2025-10-31,10919,11598
2025-11-30,10937,11630
2025-12-31,10973,11668
2026-01-31,11028,11739

The Hypothetical Growth graph compares a hypothetical investment in the Fund to the performance of the Index for the stated time period. Returns reflect reinvestment of dividends and capital gains, if any, as well as all fees and expenses.

Distributions

            Categories,Total ($)
            2014-01-31,0.00126
2014-02-28,0.00478
2014-03-31,0.00196
2014-04-30,0.00126
2014-05-31,0.00120
2014-06-30,0.00149
2014-07-31,0.00305
2014-08-31,0.00153
2014-09-30,0.00243
2014-10-31,0.00165
2014-11-30,0.00201
2014-12-31,0.00041
2015-01-31,0
2015-02-28,0.00172
2015-03-31,0.00018
2015-04-30,0.00195
2015-05-31,0.00102
2015-06-30,0.00255
2015-07-31,0.00137
2015-08-31,0.00186
2015-09-30,0.00286
2015-10-31,0.00134
2015-11-30,0.00183
2015-12-31,0.00074
2016-01-31,0.00129
2016-02-29,0.00321
2016-03-31,0.00183
2016-04-30,0.00396
2016-05-31,0.00313
2016-06-30,0.00409
2016-07-31,0.00241
2016-08-31,0.00191
2016-09-30,0.00317
2016-10-31,0.00206
2016-11-30,0.00286
2016-12-31,0.00201
2017-01-31,0.00875
2017-02-28,0.00831
2017-03-31,0.00643
2017-04-30,0.00802
2017-05-31,0.00728
2017-06-30,0.00882
2017-07-31,0.00838
2017-08-31,0.00839
2017-09-30,0.00909
2017-10-31,0.00796
2017-11-30,0.00919
2017-12-31,0.00886
2018-01-31,0.00874
2018-02-28,0.01067
2018-03-31,0.00884
2018-04-30,0.01053
2018-05-31,0.00784
2018-06-30,0.00937
2018-07-31,0.00812
2018-08-31,0.01075
2018-09-30,0.01145
2018-10-31,0.01151
2018-11-30,0.01293
2018-12-31,0.01251
2019-01-31,0.01067
2019-02-28,0.01584
2019-03-31,0.01404
2019-04-30,0.01452
2019-05-31,0.01322
2019-06-30,0.01432
2019-07-31,0.01236
2019-08-31,0.01192
2019-09-30,0.01262
2019-10-31,0.01166
2019-11-30,0.01131
2019-12-31,0.01169
2020-01-31,0.01075
2020-02-29,0.01160
2020-03-31,0.01478
2020-04-30,0.01106
2020-05-31,0.01053
2020-06-30,0.01083
2020-07-31,0.00938
2020-08-31,0.00886
2020-09-30,0.00761
2020-10-31,0.00412
2020-11-30,0.00472
2020-12-31,0.00327
2021-01-31,0.00237
2021-02-28,0.00435
2021-03-31,0.00192
2021-04-30,0.00271
2021-05-31,0.00205
2021-06-30,0.00257
2021-07-31,0.00165
2021-08-31,0.00140
2021-09-30,0.00211
2021-10-31,0.00180
2021-11-30,0.00309
2021-12-31,0.00282
2022-01-31,0.00269
2022-02-28,0.00554
2022-03-31,0.00410
2022-04-30,0.00685
2022-05-31,0.00829
2022-06-30,0.00949
2022-07-31,0.01108
2022-08-31,0.01298
2022-09-30,0.01451
2022-10-31,0.01693
2022-11-30,0.01660
2022-12-31,0.02009
2023-01-31,0.01952
2023-02-28,0.02264
2023-03-31,0.02376
2023-04-30,0.02476
2023-05-31,0.02505
2023-06-30,0.02618
2023-07-31,0.02673
2023-08-31,0.02816
2023-09-30,0.02883
2023-10-31,0.02945
2023-11-30,0.02950
2023-12-31,0.02952
2024-01-31,0.02997
2024-02-29,0.03047
2024-03-31,0.03009
2024-04-30,0.03068
2024-05-31,0.03008
2024-06-30,0.03077
2024-07-31,0.03126
2024-08-31,0.03149
2024-09-30,0.03124
2024-10-31,0.03084
2024-11-30,0.03059
2024-12-31,0.03072
2025-01-31,0.03008
2025-02-28,0.03101
2025-03-31,0.03022
2025-04-30,0.03095
2025-05-31,0.03051
2025-06-30,0.03042
2025-07-31,0.03040
2025-08-31,0.03025
2025-09-30,0.03056
2025-10-31,0.03010
2025-11-30,0.03022
2025-12-31,0.02945
2026-01-31,0.02907

            Ex-Date, Payable Date,Total ($),Income ($),ST Cap Gains ($),LT Cap Gains ($)
2014-01-31,1391126400,0.00126,0.00126,0,0
2014-02-28,1393545600,0.00478,0.00478,0,0
2014-03-31,1396224000,0.00196,0.00196,0,0
2014-04-30,1398816000,0.00126,0.00126,0,0
2014-05-30,1401494400,0.00120,0.00120,0,0
2014-06-30,1404086400,0.00149,0.00149,0,0
2014-07-31,1406764800,0.00305,0.00305,0,0
2014-08-29,1409443200,0.00153,0.00153,0,0
2014-09-30,1412035200,0.00243,0.00243,0,0
2014-10-31,1414713600,0.00165,0.00165,0,0
2014-11-28,1417305600,0.00201,0.00201,0,0
2014-12-31,1419984000,0.00041,0.00041,0,0
2015-01-31,1422662400,0,0,0,0
2015-02-27,1425081600,0.00172,0.00172,0,0
2015-03-31,1427760000,0.00018,0.00018,0,0
2015-04-30,1430352000,0.00195,0.00195,0,0
2015-05-29,1433030400,0.00102,0.00102,0,0
2015-06-30,1435622400,0.00255,0.00255,0,0
2015-07-31,1438300800,0.00137,0.00137,0,0
2015-08-31,1440979200,0.00186,0.00186,0,0
2015-09-30,1443571200,0.00286,0.00286,0,0
2015-10-30,1446249600,0.00134,0.00134,0,0
2015-11-30,1448841600,0.00183,0.00183,0,0
2015-12-31,1451520000,0.00074,0.00074,0,0
2016-01-29,1454198400,0.00129,0.00129,0,0
2016-02-29,1456704000,0.00321,0.00321,0,0
2016-03-31,1459382400,0.00183,0.00183,0,0
2016-04-29,1461974400,0.00396,0.00396,0,0
2016-05-31,1464652800,0.00313,0.00313,0,0
2016-06-30,1467244800,0.00409,0.00409,0,0
2016-07-29,1469923200,0.00241,0.00241,0,0
2016-08-31,1472601600,0.00191,0.00191,0,0
2016-09-30,1475193600,0.00317,0.00317,0,0
2016-10-31,1477872000,0.00206,0.00206,0,0
2016-11-30,1480464000,0.00286,0.00286,0,0
2016-12-30,1483142400,0.00201,0.00201,0,0
2017-01-31,1485820800,0.00875,0.00875,0,0
2017-02-28,1488240000,0.00831,0.00831,0,0
2017-03-31,1490918400,0.00643,0.00643,0,0
2017-04-28,1493510400,0.00802,0.00802,0,0
2017-05-31,1496188800,0.00728,0.00728,0,0
2017-06-30,1498780800,0.00882,0.00882,0,0
2017-07-31,1501459200,0.00838,0.00838,0,0
2017-08-31,1504137600,0.00839,0.00839,0,0
2017-09-29,1506729600,0.00909,0.00909,0,0
2017-10-31,1509408000,0.00796,0.00796,0,0
2017-11-30,1512000000,0.00919,0.00919,0,0
2017-12-29,1514678400,0.00886,0.00886,0,0
2018-01-31,1517356800,0.00874,0.00874,0,0
2018-02-28,1519776000,0.01067,0.01067,0,0
2018-03-29,1522454400,0.00884,0.00884,0,0
2018-04-30,1525046400,0.01053,0.01053,0,0
2018-05-31,1527724800,0.00784,0.00784,0,0
2018-06-29,1530316800,0.00937,0.00937,0,0
2018-07-31,1532995200,0.00812,0.00812,0,0
2018-08-31,1535673600,0.01075,0.01075,0,0
2018-09-28,1538265600,0.01145,0.01145,0,0
2018-10-31,1540944000,0.01151,0.01151,0,0
2018-11-30,1543536000,0.01293,0.01293,0,0
2018-12-31,1546214400,0.01251,0.01251,0,0
2019-01-31,1548892800,0.01067,0.01067,0,0
2019-02-28,1551312000,0.01584,0.01584,0,0
2019-03-29,1553990400,0.01404,0.01404,0,0
2019-04-30,1556582400,0.01452,0.01452,0,0
2019-05-31,1559260800,0.01322,0.01322,0,0
2019-06-28,1561852800,0.01432,0.01432,0,0
2019-07-31,1564531200,0.01236,0.01236,0,0
2019-08-31,1567209600,0.01192,0.01192,0,0
2019-09-30,1569801600,0.01262,0.01262,0,0
2019-10-31,1572480000,0.01166,0.01166,0,0
2019-11-30,1575072000,0.01131,0.01131,0,0
2019-12-31,1577750400,0.01169,0.01169,0,0
2020-01-31,1580428800,0.01075,0.01075,0,0
2020-02-29,1582934400,0.01160,0.01160,0,0
2020-03-31,1585612800,0.01478,0.01478,0,0
2020-04-30,1588204800,0.01106,0.01106,0,0
2020-05-31,1590883200,0.01053,0.01053,0,0
2020-06-30,1593475200,0.01083,0.01083,0,0
2020-07-31,1596153600,0.00938,0.00938,0,0
2020-08-31,1598832000,0.00886,0.00886,0,0
2020-09-30,1601424000,0.00761,0.00761,0,0
2020-10-30,1604102400,0.00412,0.00412,0,0
2020-11-30,1606694400,0.00472,0.00472,0,0
2020-12-31,1609372800,0.00327,0.00327,0,0
2021-01-29,1612051200,0.00237,0.00237,0,0
2021-02-26,1614470400,0.00435,0.00435,0,0
2021-03-31,1617148800,0.00192,0.00192,0,0
2021-04-30,1619740800,0.00271,0.00271,0,0
2021-05-28,1622419200,0.00205,0.00205,0,0
2021-06-30,1625011200,0.00257,0.00257,0,0
2021-07-30,1627689600,0.00165,0.00165,0,0
2021-08-31,1630368000,0.00140,0.00140,0,0
2021-09-30,1632960000,0.00211,0.00211,0,0
2021-10-29,1635638400,0.00180,0.00180,0,0
2021-11-30,1638230400,0.00309,0.00309,0,0
2021-12-31,1640908800,0.00282,0.00282,0,0
2022-01-31,1643587200,0.00269,0.00269,0,0
2022-02-28,1646006400,0.00554,0.00554,0,0
2022-03-31,1648684800,0.00410,0.00410,0,0
2022-04-29,1651276800,0.00685,0.00685,0,0
2022-05-31,1653955200,0.00829,0.00829,0,0
2022-06-30,1656547200,0.00949,0.00949,0,0
2022-07-29,1659225600,0.01108,0.01108,0,0
2022-08-31,1661904000,0.01298,0.01298,0,0
2022-09-30,1664496000,0.01451,0.01451,0,0
2022-10-31,1667174400,0.01693,0.01693,0,0
2022-11-30,1669766400,0.01660,0.01660,0,0
2022-12-30,1672444800,0.02009,0.02009,0,0
2023-01-31,1675123200,0.01952,0.01952,0,0
2023-02-28,1677542400,0.02264,0.02264,0,0
2023-03-31,1680220800,0.02376,0.02376,0,0
2023-04-28,1682812800,0.02476,0.02476,0,0
2023-05-31,1685491200,0.02505,0.02505,0,0
2023-06-30,1688083200,0.02618,0.02618,0,0
2023-07-31,1690761600,0.02673,0.02673,0,0
2023-08-31,1693440000,0.02816,0.02816,0,0
2023-09-29,1696032000,0.02883,0.02883,0,0
2023-10-31,1698710400,0.02945,0.02945,0,0
2023-11-30,1701302400,0.02950,0.02950,0,0
2023-12-29,1703980800,0.02952,0.02952,0,0
2024-01-31,1706659200,0.02997,0.02997,0,0
2024-02-29,1709164800,0.03047,0.03047,0,0
2024-03-28,1711843200,0.03009,0.03009,0,0
2024-04-30,1714435200,0.03068,0.03068,0,0
2024-05-31,1717113600,0.03008,0.03008,0,0
2024-06-28,1719705600,0.03077,0.03077,0,0
2024-07-31,1722384000,0.03126,0.03126,0,0
2024-08-30,1725062400,0.03149,0.03149,0,0
2024-09-30,1727654400,0.03124,0.03124,0,0
2024-10-31,1730332800,0.03084,0.03084,0,0
2024-11-29,1732924800,0.03059,0.03059,0,0
2024-12-31,1735603200,0.03072,0.03072,0,0
2025-01-31,1738281600,0.03008,0.03008,0,0
2025-02-28,1740700800,0.03101,0.03101,0,0
2025-03-31,1743379200,0.03022,0.03022,0,0
2025-04-30,1745971200,0.03095,0.03095,0,0
2025-05-30,1748649600,0.03051,0.03051,0,0
2025-06-30,1751241600,0.03042,0.03042,0,0
2025-07-31,1753920000,0.03040,0.03040,0,0
2025-08-29,1756598400,0.03025,0.03025,0,0
2025-09-30,1759190400,0.03056,0.03056,0,0
2025-10-31,1761868800,0.03010,0.03010,0,0
2025-11-28,1764460800,0.03022,0.03022,0,0
2025-12-31,1767139200,0.02945,0.02945,0,0
2026-01-30,1769817600,0.02907,0.02907,0,0

Distributions

(As of 30 Jan 2026)

Ex-Date

Payable Date

Total ($)

Income ($)

ST Cap Gains ($)

LT Cap Gains ($)

31 Jan 2014

0.00126

—

28 Feb 2014

0.00478

—

31 Mar 2014

0.00196

—

30 Apr 2014

0.00126

—

30 May 2014

31 May 2014

0.00120

—

30 Jun 2014

0.00149

—

31 Jul 2014

0.00305

—

29 Aug 2014

31 Aug 2014

0.00153

—

30 Sep 2014

0.00243

—

31 Oct 2014

0.00165

—

28 Nov 2014

30 Nov 2014

0.00201

—

31 Dec 2014

0.00041

—

31 Jan 2015

—

27 Feb 2015

28 Feb 2015

0.00172

—

31 Mar 2015

0.00018

—

30 Apr 2015

0.00195

—

29 May 2015

31 May 2015

0.00102

—

30 Jun 2015

0.00255

—

31 Jul 2015

0.00137

—

31 Aug 2015

0.00186

—

30 Sep 2015

0.00286

—

30 Oct 2015

31 Oct 2015

0.00134

—

30 Nov 2015

0.00183

—

31 Dec 2015

0.00074

—

29 Jan 2016

31 Jan 2016

0.00129

—

29 Feb 2016

0.00321

—

31 Mar 2016

0.00183

—

29 Apr 2016

30 Apr 2016

0.00396

—

31 May 2016

0.00313

—

30 Jun 2016

0.00409

—

29 Jul 2016

31 Jul 2016

0.00241

—

31 Aug 2016

0.00191

—

30 Sep 2016

0.00317

—

31 Oct 2016

0.00206

—

30 Nov 2016

0.00286

—

30 Dec 2016

31 Dec 2016

0.00201

—

31 Jan 2017

0.00875

—

28 Feb 2017

0.00831

—

31 Mar 2017

0.00643

—

28 Apr 2017

30 Apr 2017

0.00802

—

31 May 2017

0.00728

—

30 Jun 2017

0.00882

—

31 Jul 2017

0.00838

—

31 Aug 2017

0.00839

—

29 Sep 2017

30 Sep 2017

0.00909

—

31 Oct 2017

0.00796

—

30 Nov 2017

0.00919

—

29 Dec 2017

31 Dec 2017

0.00886

—

31 Jan 2018

0.00874

—

28 Feb 2018

0.01067

—

29 Mar 2018

31 Mar 2018

0.00884

—

30 Apr 2018

0.01053

—

31 May 2018

0.00784

—

29 Jun 2018

30 Jun 2018

0.00937

—

31 Jul 2018

0.00812

—

31 Aug 2018

0.01075

—

28 Sep 2018

30 Sep 2018

0.01145

—

31 Oct 2018

0.01151

—

30 Nov 2018

0.01293

—

31 Dec 2018

0.01251

—

31 Jan 2019

0.01067

—

28 Feb 2019

0.01584

—

29 Mar 2019

31 Mar 2019

0.01404

—

30 Apr 2019

0.01452

—

31 May 2019

0.01322

—

28 Jun 2019

30 Jun 2019

0.01432

—

31 Jul 2019

0.01236

—

31 Aug 2019

0.01192

—

30 Sep 2019

0.01262

—

31 Oct 2019

0.01166

—

30 Nov 2019

0.01131

—

31 Dec 2019

0.01169

—

31 Jan 2020

0.01075

—

29 Feb 2020

0.01160

—

31 Mar 2020

0.01478

—

30 Apr 2020

0.01106

—

31 May 2020

0.01053

—

30 Jun 2020

0.01083

—

31 Jul 2020

0.00938

—

31 Aug 2020

0.00886

—

30 Sep 2020

0.00761

—

30 Oct 2020

31 Oct 2020

0.00412

—

30 Nov 2020

0.00472

—

31 Dec 2020

0.00327

—

29 Jan 2021

31 Jan 2021

0.00237

—

26 Feb 2021

28 Feb 2021

0.00435

—

31 Mar 2021

0.00192

—

30 Apr 2021

0.00271

—

28 May 2021

31 May 2021

0.00205

—

30 Jun 2021

0.00257

—

30 Jul 2021

31 Jul 2021

0.00165

—

31 Aug 2021

0.00140

—

30 Sep 2021

0.00211

—

29 Oct 2021

31 Oct 2021

0.00180

—

30 Nov 2021

0.00309

—

31 Dec 2021

0.00282

—

31 Jan 2022

0.00269

—

28 Feb 2022

0.00554

—

31 Mar 2022

0.00410

—

29 Apr 2022

30 Apr 2022

0.00685

—

31 May 2022

0.00829

—

30 Jun 2022

0.00949

—

29 Jul 2022

31 Jul 2022

0.01108

—

31 Aug 2022

0.01298

—

30 Sep 2022

0.01451

—

31 Oct 2022

0.01693

—

30 Nov 2022

0.01660

—

30 Dec 2022

31 Dec 2022

0.02009

—

31 Jan 2023

0.01952

—

28 Feb 2023

0.02264

—

31 Mar 2023

0.02376

—

28 Apr 2023

30 Apr 2023

0.02476

—

31 May 2023

0.02505

—

30 Jun 2023

0.02618

—

31 Jul 2023

0.02673

—

31 Aug 2023

0.02816

—

29 Sep 2023

30 Sep 2023

0.02883

—

31 Oct 2023

0.02945

—

30 Nov 2023

0.02950

—

29 Dec 2023

31 Dec 2023

0.02952

—

31 Jan 2024

0.02997

—

29 Feb 2024

0.03047

—

28 Mar 2024

31 Mar 2024

0.03009

—

30 Apr 2024

0.03068

—

31 May 2024

0.03008

—

28 Jun 2024

30 Jun 2024

0.03077

—

31 Jul 2024

0.03126

—

30 Aug 2024

31 Aug 2024

0.03149

—

30 Sep 2024

0.03124

—

31 Oct 2024

0.03084

—

29 Nov 2024

30 Nov 2024

0.03059

—

31 Dec 2024

0.03072

—

31 Jan 2025

0.03008

—

28 Feb 2025

0.03101

—

31 Mar 2025

0.03022

—

30 Apr 2025

0.03095

—

30 May 2025

31 May 2025

0.03051

—

30 Jun 2025

0.03042

—

31 Jul 2025

0.03040

—

29 Aug 2025

31 Aug 2025

0.03025

—

30 Sep 2025

0.03056

—

31 Oct 2025

0.03010

—

28 Nov 2025

30 Nov 2025

0.03022

—

31 Dec 2025

0.02945

—

30 Jan 2026

31 Jan 2026

0.02907

—

Fund Facts

(As of 31 Jan 2026)

Net Fund Assets

$111.3 M

Benchmark

ICE BofA 1-3 Year U.S. Municipal Securities Index

Morningstar Category

Muni National Short

Fund Symbol

TLMAX

Share Class

Share Class Inception Date

30 Dec 2013

Distribution Frequency

Monthly

30-Day SEC Yield (Subsidized)

2.44%

30-Day SEC Yield (Unsubsidized)

2.04%

Annualized Distribution Yield

2.75%

Characteristics

Portfolio

(As of 31 Jan 2026)

Portfolio

Benchmark

Number of Holdings

123

—

Annual Portfolio Turnover

55%

—

Effective Duration

1.6 Yrs

1.7 Yrs

Average Effective Maturity

2.2 Yrs

2.0 Yrs

Portfolio

Benchmark

Weighted Average Coupon

4.1%

4.6%

Yield to Worst

3.0%

2.4%

Subject to Alternative Minimum Tax

12.1%

—

Risk & Return Profile

(As of 31 Jan 2026)

10y

Annualized Alpha (%)

0.58

0.09

-0.07

Standard Deviation (%)

1.49

1.79

1.41

Sharpe Ratio

-1.25

-1.02

-0.69

Up Capture (%)

93.65

90.93

80.90

Down Capture (%)

67.94

88.73

81.54

Past performance does not guarantee future results.

Risk & Return Profile metrics are based on the I share class.

Portfolio

Top Holdings

(As of 31 Dec 2025)

Name

Ticker/Symbol

Weight %

PEFA, Inc.

70556CAB0

2.7

Massachusetts Development Finance Agency

57584YPF0

2.3

Kentucky Public Energy Authority

74440DFN9

2.2

City of Los Angeles Department of Airports

5444452K4

2.0

Tennergy Corp./TN

880397CJ1

1.9

Travis County Housing Finance Corp.

89438UBM9

1.9

Harris County Cultural Education Facilities Finance Corp.

414009NF3

1.9

Chatom Industrial Development Board

162296AC1

1.8

California Community Choice Financing Authority

13013JGX8

1.7

Halifax County Industrial Development Authority

40579PAE1

1.5

Download Holdings

Portfolio holdings are subject to change daily.

Exposure Breakdown

(As of 31 Jan 2026)

Sector Allocation

Fund (%)

Benchmark (%)

Fund

Benchmark

10%

15%

20%

Multi Family Mortgage

18.4

6.6

Industrial Development/Pollution Control

16.8

—

Prepaid Gas

14.2

—

Short-Term Investments, Other Assets & Liabilities

9.3

—

Hospital

5.7

4.1

School District General Obligation

5.2

—

CCRC/Senior Living

4.7

—

School District App

3.6

—

Public Power

3.5

6.7

Airport

3.5

2.8

Prepaid Electric

1.9

—

Sector Allocation

Fund (%)

Multi Family Mortgage

18.4

Industrial Development/Pollution Control

16.8

Prepaid Gas

14.2

Short-Term Investments, Other Assets & Liabilities

9.3

Hospital

5.7

School District General Obligation

5.2

CCRC/Senior Living

4.7

School District App

3.6

Public Power

3.5

Airport

3.5

Prepaid Electric

1.9

Top 10 U.S. States

Fund (%)

Benchmark (%)

Portfolio

Benchmark

10%

15%

20%

Texas

14.2

8.9

Short-Term Investments, Other Assets & Liabilities

9.3

—

California

8.6

17.2

Georgia

7.0

4.0

Illinois

6.6

4.4

Florida

4.7

2.7

New York

4.3

15.1

Tennessee

4.3

1.8

Pennsylvania

4.2

3.0

Alabama

3.8

2.5

Kentucky

3.1

1.2

Top 10 U.S. States

Fund (%)

Texas

14.2

Short-Term Investments, Other Assets & Liabilities

9.3

California

8.6

Georgia

7.0

Illinois

6.6

Florida

4.7

New York

4.3

Tennessee

4.3

Pennsylvania

4.2

Alabama

3.8

Kentucky

3.1

Credit Quality

Fund (%)

Benchmark (%)

Fund

Benchmark

10%

20%

30%

40%

50%

60%

AAA

4.4

15.0

34.7

59.4

38.2

21.8

BBB

8.8

3.7

Not Rated

4.5

—

Short-Term Investments, Other Assets & Liabilities

9.3

—

Credit Quality

Fund (%)

AAA

4.4

34.7

38.2

BBB

8.8

Not Rated

4.5

Short-Term Investments, Other Assets & Liabilities

9.3

Maturity

Fund (%)

Benchmark (%)

Fund

Benchmark

10%

20%

30%

40%

50%

Year 1

25.6

3.0

Year 2

18.2

48.0

Year 3

13.1

49.0

Year 4

16.9

0.0

Year 5+

17.0

0.0

Short-Term Investments, Other Assets & Liabilities

9.3

—

Maturity

Fund (%)

Year 1

25.6

Year 2

18.2

Year 3

13.1

Year 4

16.9

Year 5+

17.0

Short-Term Investments, Other Assets & Liabilities

9.3

Holdings with the Geography breakdown are classified by country of risk as determined by MSCI and Bloomberg.

Weights are percentages of the total portfolio unless otherwise noted.

May not add up to 100% due to rounding.

Short-Term Investments, Other Assets & Liabilities includes cash, short-term securities, other assets less liabilities, accruals, derivatives and forwards. It may also include investments in money market or similar funds managed by Thornburg that are not offered to the public.

Portfolio Managers

David Ashley, CFA

Portfolio Manager and Managing Director

David Ashley is a portfolio manager for Thornburg Investment Management. He joined Thornburg as associate portfolio manager in 2011 and was named portfolio manager in 2019. Dave earned a BS in finance and MBA from the University of Delaware in 2001. He is also a CFA charterholder. Prior to joining Thornburg Investment Management, Dave was a credit analyst for Wilmington…

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Eve Lando, JD

Portfolio Manager and Managing Director

Eve Lando is a portfolio manager for Thornburg Investment Management. She joined Thornburg's municipal team in 2019 as associate portfolio manager and was named portfolio manager in 2020. Eve holds a BA in urban studies from Columbia University and a JD from Brooklyn Law School, with a concentration in business law studies. She has extensive experience in municipal bond research…

Learn More

Craig Mauermann, ChFC

Portfolio Manager and Managing Director

Craig Mauermann, ChFC, is a portfolio manager for Thornburg Investment Management. He joined the firm in 2021 as a senior fixed income analyst and was promoted to associate portfolio manager in 2024 and was named portfolio manager in 2025. Craig has extensive municipal research and investment experience. He began his career at Strong Capital Management as an analyst and trader…

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Literature

Fact Sheet

Commentary

Summary Prospectus

Annual Financial Statements

Semi-Annual Financial Statements

Prospectus

Statement of Additional Information (SAI)

Annual TSR

Semi-Annual TSR

Important Information

A bond credit rating assesses the financial ability of a debt issuer to make timely payments of principal and interest. Ratings of AAA (the highest), AA, A, and BBB are investment-grade quality. Ratings of BB, B, CCC, CC, C and D (the lowest) are considered below investment grade, speculative grade, or junk bonds.

Class I shares may not be available to all investors. Minimum investments for the I share class may be higher than those for other classes.

This communication is not authorized for distribution to prospective investors in the Fund unless preceded or accompanied by an effective prospectus.

© 2026 Morningstar, Inc. All Rights Reserved. The information contained herein: (1) is proprietary to Morningstar and/or its content providers; (2) may not be copied or distributed; and (3) is not warranted to be accurate, complete or timely. Neither Morningstar nor its content providers are responsible for any damages or losses arising from any use of this information. Past performance is no guarantee of future results.

Diversification does not assure or guarantee better performance and cannot eliminate the risk of investment losses.

There is no guarantee that the Fund will meet its investment objectives.

To determine a fund's Morningstar Rating™, funds and other managed products with at least a three-year history are ranked in their categories by their Morningstar Risk-Adjusted Return scores. The top 10% receive 5 stars; the next 22.5%, 4 stars; the middle 35%, 3 stars; the next 22.5%, 2 stars; and the bottom 10% receive 1 star. The Risk-Adjusted Return accounts for variation in a managed product's monthly excess performance (excluding sales charges), placing more emphasis on downward variations and rewarding consistent performance. Other share classes may have different performance characteristics.

Income earned from municipal bonds is exempt from regular federal and in some cases, state and local income tax. Income may be subject to the alternative minimum tax (AMT).

Thornburg mutual funds are distributed by Thornburg Securities LLC.

Thornburg Investment Management, Inc. mutual funds are sold through investment professionals including investment advisors, brokerage firms, bank trust departments, trust companies and certain other financial intermediaries. Thornburg Securities LLC (TSL) does not act as broker of record for investors.

Please see our glossary for a definition of terms.

Investments carry risks, including possible loss of principal. Portfolios investing in bonds have the same interest rate, inflation, and credit risks that are associated with the underlying bonds. The value of bonds will fluctuate relative to changes in interest rates, decreasing when interest rates rise. Unlike bonds, bond funds have ongoing fees and expenses. Investments in the Fund are not FDIC insured, nor are they bank deposits or guaranteed by a bank or any other entity.

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Thornburg Short Duration Municipal Fund

Portfolio Managers

Overview

Why Invest in This Fund?

Investment Objective

Investment Approach

Related Content

Performance

Returns

Fund Fees

Hypothetical Growth of $10,000

Distributions

Fund Facts

Characteristics

Portfolio

Risk & Return Profile

Portfolio

Top Holdings

Exposure Breakdown

Portfolio Managers

David Ashley, CFA

Eve Lando, JD

Craig Mauermann, ChFC

Literature

Important Information

More Insights

Real Estate Market Recap: Trends, Challenges, and What Comes Next

Beyond the Hype—Building Smarter Private Credit Portfolios

Structural Forces Are Driving the Current Investment Environment

Finding Opportunity Amid Imbalance: 2026 Market Outlook

Will the Real Kevin Warsh Please Stand Up?

FOMC Update: Fed Holds Rates Steady After Three Successive Cuts

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Thornburg Short Duration Municipal Fund

Portfolio Managers

Overview

Why Invest in This Fund?

Investment Objective

Investment Approach

Related Content

Performance

Returns

Fund Fees

Hypothetical Growth of $10,000

Distributions

Fund Facts

Characteristics

Portfolio

Risk & Return Profile

Portfolio

Top Holdings

Exposure Breakdown

Portfolio Managers

David Ashley, CFA

Eve Lando, JD

Craig Mauermann, ChFC

Literature

Important Information

More Insights

Real Estate Market Recap: Trends, Challenges, and What Comes Next

Beyond the Hype—Building Smarter Private Credit Portfolios

Structural Forces Are Driving the Current Investment Environment

Finding Opportunity Amid Imbalance: 2026 Market Outlook

Will the Real Kevin Warsh Please Stand Up?

FOMC Update: Fed Holds Rates Steady After Three Successive Cuts