iShares Trust - iShares 全國市政債券 ETF
US ˙ ARCA ˙ US4642884146

SecurityMUB / iShares Trust - iShares National Muni Bond ETF
InstitutionBlackRock, Inc.
Latest Disclosed Ownership650,618 shares
Latest Disclosed Value $ 69,063,141
BlackRock, Inc. reports 198.04% increase in ownership of MUB / iShares Trust - iShares National Muni Bond ETF

On May 13, 2026 - BlackRock, Inc. filed a 13F-HR form disclosing ownership of 650,618 shares of iShares Trust - iShares National Muni Bond ETF (US:MUB) valued at $69,063,101 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 218,298 shares of iShares Trust - iShares National Muni Bond ETF. This represents a change in shares of 198.04% during the quarter. The current value of the position is $69,739,743 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)
2026-05-13 2026-03-31 13F ISHARES TR NATIONAL MUN ETF 464288414 650,618 432,320 198.04 69,063 195.38 0.0001
2026-02-12 2025-12-31 13F ISHARES TR NATIONAL MUN ETF 464288414 218,298 165,297 311.88 23,382 314.26 0.0004
2025-11-12 2025-09-30 13F ISHARES TR NATIONAL MUN ETF 464288414 53,001 -14,566 -21.56 5,644 -20.05 0.0001
2025-08-12 2025-06-30 13F ISHARES TR NATIONAL MUN ETF 464288414 67,567 -226,591 -77.03 7,059 -77.24 0.0001
2025-05-02 2025-03-31 13F ISHARES TR NATIONAL MUN ETF 464288414 294,158 105,892 56.25 31,016 54.62 0.0007
2025-02-07 2024-12-31 13F ISHARES TR NATIONAL MUN ETF 464288414 188,266 93,890 99.49 20,060 95.66 0.0004
2024-11-13 2024-09-30 13F ISHARES TR NATIONAL MUN ETF 464288414 94,376 -181,225 -65.76 10,252 -65.09 0.0002
2024-08-13 2024-06-30 13F ISHARES TR NATIONAL MUN ETF 464288414 275,601 -25,323 -8.42 29,365 -9.31 0.0007
2024-05-10 2024-03-31 13F ISHARES TR NATIONAL MUN ETF 464288414 300,924 -2,235,473 -88.14 32,379 -88.22 0.0008
2024-02-13 2023-12-31 13F ISHARES TR NATIONAL MUN ETF 464288414 2,536,397 1,333,343 110.83 274,971 122.90 0.0070
2023-11-13 2023-09-30 13F ISHARES TR NATIONAL MUN ETF 464288414 1,203,054 555,655 85.83 123,361 78.54 0.0035
2023-08-11 2023-06-30 13F ISHARES TR NATIONAL MUN ETF 464288414 647,399 -332,388 -33.92 69,097 -34.54 0.0019
2023-05-12 2023-03-31 13F ISHARES TR NATIONAL MUN ETF 464288414 979,787 -872,815 -47.11 105,562 -46.00 0.0031
2023-02-13 2022-12-31 13F ISHARES TR NATIONAL MUN ETF 464288414 1,852,602 1,088,953 142.60 195,487 149.55 0.0061
2022-11-14 2022-09-30 13F ISHARES TR NATIONAL MUN ETF 464288414 763,649 -198,151 -20.60 78,335 -23.42 0.0027
2022-08-12 2022-06-30 13F ISHARES TR NATIONAL MUN ETF 464288414 961,800 100,891 11.72 102,297 8.38 0.0033
2022-05-12 2022-03-31 13F ISHARES TR NATIONAL MUN ETF 464288414 860,909 -4,331,629 -83.42 94,390 -84.37 0.0025
2022-02-10 2021-12-31 13F ISHARES TR NATIONAL MUN ETF 464288414 5,192,538 1,024,932 24.59 603,788 24.71 0.0154
2021-11-09 2021-09-30 13F ISHARES TR NATIONAL MUN ETF 464288414 4,167,606 380,203 10.04 484,150 9.07 0.0136
2021-08-11 2021-06-30 13F ISHARES TR NATIONAL MUN ETF 464288414 3,787,403 1,713,987 82.66 443,883 84.47 0.0124
2021-05-07 2021-03-31 13F ISHARES TR NATIONAL MUN ETF 464288414 2,073,416 314,333 17.87 240,621 16.71 0.0071
2021-02-05 2020-12-31 13F ISHARES TR NATIONAL MUN ETF 464288414 1,759,083 1,192,349 210.39 206,164 213.79 0.0066
2020-11-06 2020-09-30 13F ISHARES TR NATIONAL MUN ETF 464288414 566,734 201,569 55.20 65,702 55.91 0.0024
2020-08-14 2020-06-30 13F ISHARES TR NATIONAL MUN ETF 464288414 365,165 7,797 2.18 42,140 4.34 0.0017
2020-05-01 2020-03-31 13F ISHARES TR NATIONAL MUN ETF 464288414 357,368 -4,421,109 -92.52 40,387 -92.58 0.0020
2020-02-13 2019-12-31 13F ISHARES TR NATIONAL MUN ETF 464288414 4,778,477 795,829 19.98 544,317 19.78 0.0209
2019-11-08 2019-09-30 13F ISHARES TR NATIONAL MUN ETF 464288414 3,982,648 2,561,944 180.33 454,420 182.83 0.0191
2019-08-22 2019-06-30 13F/A-1 ISHARES TR NATIONAL MUN ETF 464288414 1,420,704 -3,049,277 -68.22 160,667 -67.67 0.0069
2019-08-13 2019-06-30 13F ISHARES TR NATIONAL MUN ETF 464288414 1,420,704 -3,049,277 160,667
2019-05-09 2019-03-31 13F ISHARES TR NATIONAL MUN ETF 464288414 4,469,981 4,014,873 882.18 497,017 901.53 0.0222
2019-02-08 2018-12-31 13F ISHARES TR NATIONAL MUN ETF 464288414 455,108 -2,561,714 -84.91 49,626 -84.76 0.0025
2018-11-09 2018-09-30 13F ISHARES TR NATIONAL MUN ETF 464288414 3,016,822 -429,774 -12.47 325,635 -13.35 0.0141
2018-08-09 2018-06-30 13F ISHARES TR NATIONAL MUN ETF 464288414 3,446,596 3,183,174 1,208.39 375,817 1,209.70 0.0173
2018-05-09 2018-03-31 13F ISHARES TR NATIONAL MUN ETF 464288414 263,422 6,795 2.65 28,695 0.97 0.0014
2018-02-09 2017-12-31 13F ISHARES TR NATIONAL MUN ETF 464288414 256,627 -996,024 -79.51 28,419 -79.54 0.0014
2017-11-14 2017-09-30 13F ISHARES TR NATIONAL MUN ETF 464288414 1,252,651 918,060 274.38 138,882 276.93 0.0070
2017-08-10 2017-06-30 13F ISHARES TR NATIONAL MUN ETF 464288414 334,591 2,202 0.66 36,846 1.75 0.0020
2017-05-12 2017-03-31 13F ISHARES TR NATIONAL MUN ETF 464288414 332,389 210,108 171.82 36,214 173.75 0.0020
2017-02-10 2016-12-31 13F ISHARES TR NATIONAL MUN ETF 464288414 122,281 86,772 244.37 13,229 230.39 0.0187
2016-11-08 2016-09-30 13F ISHARES TR NATIONAL MUN ETF 464288414 35,509 13,229 59.38 4,004 57.76 0.0057
2016-08-10 2016-06-30 13F ISHARES TR NATIONAL MUN ETF 464288414 22,280 13,662 158.53 2,538 163.83 0.0038
2016-05-10 2016-03-31 13F ISHARES TR NATIONAL MUN ETF 464288414 8,618 6,793 372.22 962 376.24 0.0015
2016-02-11 2015-12-31 13F ISHARES TR NAT AMT FREE BD 464288414 1,825 1,825 202 0.0003
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.