iShares Trust - iShares National Muni Bond ETF
US ˙ ARCA ˙ US4642884146

SecurityMUB / iShares Trust - iShares National Muni Bond ETF
InstitutionMorgan Stanley
Latest Disclosed Ownership9,214,317 shares
Latest Disclosed Value $ 978,099,933
Morgan Stanley reports 7.43% increase in ownership of MUB / iShares Trust - iShares National Muni Bond ETF

On May 15, 2026 - Morgan Stanley filed a 13F-HR form disclosing ownership of 9,214,317 shares of iShares Trust - iShares National Muni Bond ETF (US:MUB) valued at $978,099,750 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on May 27, 2026 disclosing 8,576,961 shares of iShares Trust - iShares National Muni Bond ETF. This represents a change in shares of 7.43% during the quarter. The current value of the position is $987,682,639 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F ISHARES TR NATIONAL MUN ETF 464288414 9,214,317 637,356 7.43 978,100 6.47 0.0589
2026-05-27 2025-12-31 13F/A-1 ISHARES TR NATIONAL MUN ETF 464288414 8,576,961 486,129 6.01 918,678 6.63 0.0548
2026-02-13 2025-12-31 13F ISHARES TR NATIONAL MUN ETF 464288414 8,576,961 486,129 918,678 0.0548
2026-05-27 2025-09-30 13F/A-1 ISHARES TR NATIONAL MUN ETF 464288414 8,090,832 -403,358 -4.75 861,593 -2.92 0.0522
2025-11-14 2025-09-30 13F ISHARES TR NATIONAL MUN ETF 464288414 8,090,832 -403,358 861,593 0.0522
2025-08-15 2025-06-30 13F ISHARES TR NATIONAL MUN ETF 464288414 8,494,190 -360,934 -4.08 887,473 -4.95 0.0578
2025-05-15 2025-03-31 13F ISHARES TR NATIONAL MUN ETF 464288414 8,855,124 -206,244 -2.28 933,684 -3.29 0.0668
2025-05-15 2024-12-31 13F/A-1 ISHARES TR NATIONAL MUN ETF 464288414 9,061,368 1,238,783 15.84 965,489 13.62 0.0676
2025-02-14 2024-12-31 13F ISHARES TR NATIONAL MUN ETF 464288414 9,061,368 1,238,783 965,489 0.0676
2025-05-14 2024-09-30 13F/A-2 ISHARES TR NATIONAL MUN ETF 464288414 7,822,585 1,215,093 18.39 849,768 20.70 0.0616
2025-02-14 2024-09-30 13F/A-1 ISHARES TR NATIONAL MUN ETF 464288414 7,822,585 1,215,093 849,768 0.0616
2024-11-14 2024-09-30 13F ISHARES TR NATIONAL MUN ETF 464288414 7,822,585 1,215,093 849,768 0.0073
2025-05-14 2024-06-30 13F/A-2 ISHARES TR NATIONAL MUN ETF 464288414 6,607,492 -299,005 -4.33 704,028 -5.26 0.0545
2024-10-17 2024-06-30 13F/A-1 ISHARES TR NATIONAL MUN ETF 464288414 6,607,492 -299,005 704,028 0.0545
2024-08-14 2024-06-30 13F ISHARES TR NATIONAL MUN ETF 464288414 6,607,492 -299,005 704,028 0.0545
2024-10-17 2024-03-31 13F/A-2 ISHARES TR NATIONAL MUN ETF 464288414 6,906,497 -507,639 -6.85 743,139 -7.54 0.0596
2024-08-16 2024-03-31 13F/A-1 ISHARES TR NATIONAL MUN ETF 464288414 6,906,497 -507,639 743,139 0.0070
2024-05-15 2024-03-31 13F ISHARES TR NATIONAL MUN ETF 464288414 6,906,497 -507,639 743,139 0.0596
2024-08-16 2023-12-31 13F/A-1 ISHARES TR NATIONAL MUN ETF 464288414 7,414,136 1,640,959 28.42 803,767 35.78 0.0708
2024-02-13 2023-12-31 13F ISHARES TR NATIONAL MUN ETF 464288414 7,414,136 1,640,959 803,767 0.0708
2023-11-15 2023-09-30 13F ISHARES TR NATIONAL MUN ETF 464288414 5,773,177 60,114 1.05 591,982 -2.91 0.0602
2023-08-14 2023-06-30 13F ISHARES TR NATIONAL MUN ETF 464288414 5,713,063 54,682 0.97 609,755 0.02 0.0601
2023-05-15 2023-03-31 13F ISHARES TR NATIONAL MUN ETF 464288414 5,658,381 -665,125 -10.52 609,634 -8.64 0.0654
2023-02-14 2022-12-31 13F ISHARES TR NATIONAL MUN ETF 464288414 6,323,506 739,269 13.24 667,256 16.48 0.0758
2022-11-14 2022-09-30 13F ISHARES TR NATIONAL MUN ETF 464288414 5,584,237 116,528 2.13 572,832 -1.50 0.0781
2022-10-27 2022-06-30 13F/A-1 ISHARES TR NATIONAL MUN ETF 464288414 5,467,709 24,286 0.45 581,545 -2.56 0.0755
2022-08-15 2022-06-30 13F ISHARES TR NATIONAL MUN ETF 464288414 5,467,709 24,286 581,545 0.0152
2022-10-27 2022-03-31 13F/A-1 ISHARES TR NATIONAL MUN ETF 464288414 5,443,423 844,332 18.36 596,817 11.60 0.0805
2022-05-13 2022-03-31 13F ISHARES TR NATIONAL MUN ETF 464288414 5,443,423 844,332 596,817 0.0805
2022-02-14 2021-12-31 13F ISHARES TR NATIONAL MUN ETF 464288414 4,599,091 425,725 10.20 534,783 10.31 0.0660
2021-11-15 2021-09-30 13F ISHARES TR NATIONAL MUN ETF 464288414 4,173,366 276,454 7.09 484,820 6.15 0.0653
2021-08-23 2021-06-30 13F/A-1 ISHARES TR NATIONAL MUN ETF 464288414 3,896,912 326,055 9.13 456,718 10.21 0.0602
2021-08-16 2021-06-30 13F ISHARES TR NATIONAL MUN ETF 464288414 3,896,912 326,055 456,718 0.0125
2021-05-17 2021-03-31 13F ISHARES TR NATIONAL MUN ETF 464288414 3,570,857 385,389 12.10 414,398 11.00 0.0609
2021-02-16 2020-12-31 13F ISHARES TR NATIONAL MUN ETF 464288414 3,185,468 439,388 16.00 373,337 17.27 0.0577
2020-11-13 2020-09-30 13F ISHARES TR NATIONAL MUN ETF 464288414 2,746,080 74,244 2.78 318,353 3.25 0.0616
2020-08-14 2020-06-30 13F ISHARES TR NATIONAL MUN ETF 464288414 2,671,836 63,665 2.44 308,330 4.61 0.0682
2020-05-26 2020-03-31 13F/A-1 ISHARES TR NATIONAL MUN ETF 464288414 2,608,171 613,699 30.77 294,749 29.74 0.0801
2020-05-15 2020-03-31 13F ISHARES TR NATIONAL MUN ETF 464288414 2,608,171 613,699 294,749 22,642.8677
2020-02-14 2019-12-31 13F ISHARES TR NATIONAL MUN ETF 464288414 1,994,472 7,414 0.37 227,191 0.21 0.0528
2019-11-14 2019-09-30 13F ISHARES TR NATIONAL MUN ETF 464288414 1,987,058 101,964 5.41 226,723 6.35 0.0600
2019-08-14 2019-06-30 13F ISHARES TR NATIONAL MUN ETF 464288414 1,885,094 234,090 14.18 213,185 16.13 0.0567
2019-05-15 2019-03-31 13F ISHARES TR NATIONAL MUN ETF 464288414 1,651,004 4,325 0.26 183,575 2.24 0.0520
2019-02-14 2018-12-31 13F ISHARES TR NATIONAL MUN ETF 464288414 1,646,679 205,223 14.24 179,554 15.40 0.0537
2019-04-23 2018-09-30 13F/A-2 ISHARES TR NATIONAL MUN ETF 464288414 1,441,456 -81,466 -5.35 155,590 -6.30 0.0389
2018-11-20 2018-09-30 13F/A-1 ISHARES TR NATIONAL MUN ETF 464288414 1,441,456 0 155,590 0.0389
2018-11-14 2018-09-30 13F ISHARES TR NATIONAL MUN ETF 464288414 1,441,456 -81,466 155,590
2019-04-23 2018-06-30 13F/A-1 ISHARES TR NATIONAL MUN ETF 464288414 1,522,922 -49,358 -3.14 166,059 -3.04 0.0449
2018-08-14 2018-06-30 13F ISHARES TR NATIONAL MUN ETF 464288414 1,522,922 -49,358 166,059
2019-04-23 2018-03-31 13F/A-1 ISHARES TR NATIONAL MUN ETF 464288414 1,572,280 -244,509 -13.46 171,269 -14.87 0.0475
2018-05-14 2018-03-31 13F ISHARES TR NATIONAL MUN ETF 464288414 1,572,280 -244,509 171,269
2019-04-23 2017-12-31 13F/A-1 ISHARES TR NATIONAL MUN ETF 464288414 1,816,789 213,849 13.34 201,191 13.21 0.0551
2018-02-14 2017-12-31 13F ISHARES TR NATIONAL MUN ETF 464288414 1,816,789 213,849 201,191
2017-11-14 2017-09-30 13F ISHARES TR NATIONAL MUN ETF 464288414 1,602,940 -78,784 -4.68 177,718 -4.04 0.0532
2017-08-11 2017-06-30 13F ISHARES TR NATIONAL MUN ETF 464288414 1,681,724 -38,709 -2.25 185,192 -1.20 0.0559
2017-05-22 2017-03-31 13F/A-1 ISHARES TR NATIONAL MUN ETF 464288414 1,720,433 164,931 10.60 187,441 11.39 0.0576
2017-05-12 2017-03-31 13F ISHARES TR NATIONAL MUN ETF 464288414 1,720,433 187,441
2017-02-22 2016-12-31 13F/A-1 ISHARES TR NATIONAL MUN ETF 464288414 1,555,502 71,499 4.82 168,275 0.57 0.0551
2017-02-13 2016-12-31 13F ISHARES TR NATIONAL MUN ETF 464288414 1,555,502 168,275
2016-11-10 2016-09-30 13F ISHARES TR NATIONAL MUN ETF 464288414 1,484,003 39,985 2.77 167,321 1.71 0.0571
2016-08-12 2016-06-30 13F ISHARES TR NATIONAL MUN ETF 464288414 1,444,018 -177,531 -10.95 164,508 -9.13 0.0594
2016-05-12 2016-03-31 13F ISHARES TR NATIONAL MUN ETF 464288414 1,621,549 372,719 29.85 181,046 30.95 0.0697
2016-02-09 2015-12-31 13F ISHARES TR NAT AMT FREE BD 464288414 1,248,830 85,847 7.38 138,258 8.52 0.0500
2016-02-08 2015-09-30 13F/A-1 ISHARES TR NAT AMT FREE BD 464288414 1,162,983 -83,228 -6.68 127,405 -5.52 0.0471
2015-11-09 2015-09-30 13F ISHARES TR NAT AMT FREE BD 464288414 1,162,983 127,405
2015-08-12 2015-06-30 13F ISHARES NAT AMT FREE BD 464288414 1,246,211 -10,818 -0.86 134,853 -3.00 0.0467
2015-05-14 2015-03-31 13F ISHARES NAT AMT FREE BD 464288414 1,257,029 -10,137 -0.80 139,028 -0.57 0.0512
2015-02-13 2014-12-31 13F ISHARES NAT AMT FREE BD 464288414 1,267,166 72,791 6.09 139,819 6.74 0.0511
2014-12-16 2014-09-30 13F/A-1 ISHARES NAT AMT FREE BD 464288414 1,194,375 155,621 14.98 130,987 17.78 0.0504
2014-11-14 2014-09-30 13F ISHARES NAT AMT FREE BD 464288414 1,194,375 130,987
2014-05-13 2014-03-31 13F ISHARES NAT AMT FREE BD 464288414 1,038,754 47,415 4.78 111,209 8.14 0.0466
2014-02-13 2013-12-31 13F ISHARES NAT AMT FREE BD 464288414 991,339 -63,527 -6.02 102,842 -6.70 0.0437
2013-11-13 2013-09-30 13F ISHR S&P NAT MUN COM 464288414 1,054,866 -108,414 -9.32 110,223 -9.80 0.0521
2013-08-08 2013-06-30 13F ISHR S&P NAT MUN COM 464288414 1,163,280 1,163,280 122,192 0.0616
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.