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

SecurityMUB / iShares Trust - iShares National Muni Bond ETF
InstitutionEfficient Advisors, LLC
Latest Disclosed Ownership2,418 shares
Latest Disclosed Value $ 256,655
Efficient Advisors, LLC reports 2.14% decrease in ownership of MUB / iShares Trust - iShares National Muni Bond ETF

On April 29, 2026 - Efficient Advisors, LLC filed a 13F-HR form disclosing ownership of 2,418 shares of iShares Trust - iShares National Muni Bond ETF (US:MUB) valued at $256,671 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on January 21, 2026 disclosing 2,471 shares of iShares Trust - iShares National Muni Bond ETF. This represents a change in shares of -2.14% during the quarter. The current value of the position is $258,750 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-04-29 2026-03-31 13F ISHARES TR NATIONAL MUN ETF 464288414 2,418 -53 -2.14 257 -3.03 0.0182
2026-01-21 2025-12-31 13F/A-1 ISHARES TR NATIONAL MUN ETF 464288414 2,471 -304 -10.95 265 -10.51 0.0154
2026-01-08 2025-12-31 13F ISHARES TR NATIONAL MUN ETF 464288414 2,471 -304 265 0.0154
2025-11-10 2025-09-30 13F ISHARES TR NATIONAL MUN ETF 464288414 2,775 -667 -19.38 296 -17.83 0.0167
2025-08-07 2025-06-30 13F ISHARES TR NATIONAL MUN ETF 464288414 3,442 -4,936 -58.92 360 -59.34 0.0214
2025-05-06 2025-03-31 13F/A-1 ISHARES TR NATIONAL MUN ETF 464288414 8,378 -1,027 -10.92 883 -11.88 0.0575
2025-05-06 2025-03-31 13F ISHARES TR NATIONAL MUN ETF 464288414 8,509 -896 897 0.0544
2025-02-07 2024-12-31 13F ISHARES TR NATIONAL MUN ETF 464288414 9,405 -953 -9.20 1,002 -10.93 0.0645
2024-11-12 2024-09-30 13F ISHARES TR NATIONAL MUN ETF 464288414 10,358 -686 -6.21 1,125 -4.34 0.0706
2024-08-05 2024-06-30 13F ISHARES TR NATIONAL MUN ETF 464288414 11,044 -916 -7.66 1,177 -8.55 0.0763
2024-05-09 2024-03-31 13F ISHARES TR NATIONAL MUN ETF 464288414 11,960 -33 -0.28 1,287 -1.08 0.0826
2024-02-13 2023-12-31 13F/A-1 ISHARES TR NATIONAL MUN ETF 464288414 11,993 -608 -4.83 1,300 0.62 0.0878
2024-02-08 2023-12-31 13F ISHARES TR NATIONAL MUN ETF 464288414 11,993 -608 1,300 0.0878
2023-11-07 2023-09-30 13F ISHARES TR NATIONAL MUN ETF 464288414 12,601 -345 -2.66 1,292 -6.44 0.0874
2023-08-08 2023-06-30 13F ISHARES TR NATIONAL MUN ETF 464288414 12,946 -247 -1.87 1,382 -2.81 0.0903
2023-05-09 2023-03-31 13F ISHARES TR NATIONAL MUN ETF 464288414 13,193 -200 -1.49 1,421 0.57 0.0991
2023-02-08 2022-12-31 13F ISHARES TR NATIONAL MUN ETF 464288414 13,393 -190 -1.40 1,413 1.44 0.1436
2022-11-08 2022-09-30 13F ISHARES TR NATIONAL MUN ETF 464288414 13,583 -60 -0.44 1,393 -4.00 0.1214
2022-08-05 2022-06-30 13F ISHARES TR NATIONAL MUN ETF 464288414 13,643 -635 -4.45 1,451 -7.28 0.1211
2022-05-11 2022-03-31 13F ISHARES TR NATIONAL MUN ETF 464288414 14,278 -392 -2.67 1,565 -8.26 0.1194
2022-01-20 2021-12-31 13F ISHARES TR NATIONAL MUN ETF 464288414 14,670 14 0.10 1,706 0.18 0.1210
2021-10-21 2021-09-30 13F ISHARES TR NATIONAL MUN ETF 464288414 14,656 -809 -5.23 1,703 -6.07 0.1628
2021-07-21 2021-06-30 13F ISHARES TR NATIONAL MUN ETF 464288414 15,465 763 5.19 1,813 6.27 0.2248
2021-04-28 2021-03-31 13F ISHARES TR NATIONAL MUN ETF 464288414 14,702 -3,133 -17.57 1,706 -18.37 0.2339
2021-02-02 2020-12-31 13F ISHARES TR NATIONAL MUN ETF 464288414 17,835 -813 -4.36 2,090 -3.33 0.3189
2020-11-09 2020-09-30 13F ISHARES TR NATIONAL MUN ETF 464288414 18,648 -2,112 -10.17 2,162 -9.77 0.3969
2020-08-07 2020-06-30 13F ISHARES TR NATIONAL MUN ETF 464288414 20,760 -948 -4.37 2,396 -2.32 0.4434
2020-05-15 2020-03-31 13F ISHARES TR NATIONAL MUN ETF 464288414 21,708 -1,671 -7.15 2,453 -7.89 0.5130
2020-01-27 2019-12-31 13F ISHARES TR NATIONAL MUN ETF 464288414 23,379 61 0.26 2,663 0.08 0.4635
2019-11-07 2019-09-30 13F ISHARES TR NATIONAL MUN ETF 464288414 23,318 -929 -3.83 2,661 -2.95 0.4864
2019-08-07 2019-06-30 13F ISHARES TR NATIONAL MUN ETF 464288414 24,247 2,098 9.47 2,742 11.33 0.4788
2019-05-09 2019-03-31 13F ISHARES TR NATIONAL MUN ETF 464288414 22,149 827 3.88 2,463 5.94 0.4306
2019-01-29 2018-12-31 13F ISHARES TR NATIONAL MUN ETF 464288414 21,322 -251 -1.16 2,325 -0.17 0.4327
2018-11-05 2018-09-30 13F ISHARES TR NATIONAL MUN ETF 464288414 21,573 -492 -2.23 2,329 -3.20 0.3987
2018-08-20 2018-06-30 13F ISHARES TR NATIONAL MUN ETF 464288414 22,065 1,545 7.53 2,406 7.65 0.4092
2018-05-01 2018-03-31 13F ISHARES TR NATIONAL MUN ETF 464288414 20,520 695 3.51 2,235 1.82 0.3769
2018-02-14 2017-12-31 13F ISHARES TR NATIONAL MUN ETF 464288414 19,825 883 4.66 2,195 4.52 0.3657
2017-11-16 2017-09-30 13F ISHARES TR NATIONAL MUN ETF 464288414 18,942 -15,323 -44.72 2,100 -44.34 0.3609
2017-07-31 2017-06-30 13F ISHARES TR NATIONAL MUN ETF 464288414 34,265 -3,973 -10.39 3,773 -9.43 0.5553
2017-05-11 2017-03-31 13F ISHARES TR NATIONAL MUN ETF 464288414 38,238 4,508 13.36 4,166 14.17 0.5829
2017-02-15 2016-12-31 13F ISHARES TR NATIONAL MUN ETF 464288414 33,730 1,154 3.54 3,649 -0.65 0.5225
2016-11-22 2016-09-30 13F ISHARES TR NATIONAL MUN ETF 464288414 32,576 22,190 213.65 3,673 210.48 0.5401
2016-07-25 2016-06-30 13F ISHARES TR NATIONAL MUN ETF 464288414 10,386 8,213 377.96 1,183 386.83 0.1880
2016-06-02 2016-03-31 13F ISHARES TR NATIONAL MUN ETF 464288414 2,173 2,173 243 0.0437
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.