iShares Trust - iShares MBS ETF
US ˙ NasdaqGM ˙ US4642885887

SecurityMBB / iShares Trust - iShares MBS ETF
InstitutionFranklin Resources Inc
Latest Disclosed Ownership361,078 shares
Latest Disclosed Value $ 34,284,356
Franklin Resources Inc reports 6.91% increase in ownership of MBB / iShares Trust - iShares MBS ETF

On May 13, 2026 - Franklin Resources Inc filed a 13F-HR form disclosing ownership of 361,078 shares of iShares Trust - iShares MBS ETF (US:MBB) valued at $34,284,356 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 337,725 shares of iShares Trust - iShares MBS ETF. This represents a change in shares of 6.91% during the quarter. The current value of the position is $34,017,158 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 MBS ETF 464288588 361,078 23,353 6.91 34,284 6.61 0.0014
2026-02-11 2025-12-31 13F ISHARES TR MBS ETF 464288588 337,725 7,507 2.27 32,158 2.35 0.0079
2025-11-13 2025-09-30 13F ISHARES TR MBS ETF 464288588 330,218 9,419 2.94 31,420 4.32 0.0078
2025-08-12 2025-06-30 13F ISHARES TR MBS ETF 464288588 320,799 9,749 3.13 30,120 3.25 0.0080
2025-05-13 2025-03-31 13F ISHARES TR MBS ETF 464288588 311,050 8,849 2.93 29,170 5.29 0.0084
2025-02-12 2024-12-31 13F ISHARES TR MBS ETF 464288588 302,201 5,492 1.85 27,706 -0.84 0.0077
2024-11-27 2024-09-30 13F/A-1 ISHARES TR MBS ETF 464288588 296,709 4,068 1.39 27,941 4.00 0.0078
2024-11-12 2024-09-30 13F ISHARES TR MBS ETF 464288588 296,709 4,068 27,941 0.0013
2024-08-14 2024-06-30 13F ISHARES TR MBS ETF 464288588 292,641 -10,997 -3.62 26,867 -4.26 0.0083
2024-05-13 2024-03-31 13F ISHARES TR MBS ETF 464288588 303,638 -199,866 -39.70 28,062 -40.76 0.0089
2024-02-09 2023-12-31 13F ISHARES TR MBS ETF 464288588 503,504 242,383 92.82 47,370 104.29 0.0221
2023-11-13 2023-09-30 13F ISHARES TR MBS ETF 464288588 261,121 -2,191 -0.83 23,188 -5.58 0.0118
2023-08-11 2023-06-30 13F ISHARES TR MBS ETF 464288588 263,312 -26,206 -9.05 24,558 -10.46 0.0117
2023-05-12 2023-03-31 13F ISHARES TR MBS ETF 464288588 289,518 3,006 1.05 27,426 3.21 0.0138
2023-02-10 2022-12-31 13F ISHARES TR MBS ETF 464288588 286,512 62,517 27.91 26,574 29.54 0.0138
2022-11-14 2022-09-30 13F ISHARES TR MBS ETF 464288588 223,995 -593 -0.26 20,514 -6.31 0.0112
2022-08-11 2022-06-30 13F ISHARES TR MBS ETF 464288588 224,588 10,228 4.77 21,895 0.27 0.0109
2022-05-13 2022-03-31 13F ISHARES TR MBS ETF 464288588 214,360 -21,698 -9.19 21,836 -13.89 0.0087
2022-02-11 2021-12-31 13F ISHARES TR MBS ETF 464288588 236,058 14,405 6.50 25,359 5.79 0.0091
2021-11-12 2021-09-30 13F ISHARES TR MBS ETF 464288588 221,653 12,409 5.93 23,970 5.85 0.0090
2021-08-13 2021-06-30 13F ISHARES TR MBS ETF 464288588 209,244 8,952 4.47 22,646 4.28 0.0087
2021-05-13 2021-03-31 13F ISHARES TR MBS ETF 464288588 200,292 10,744 5.67 21,716 4.03 0.0088
2021-02-10 2020-12-31 13F ISHARES TR MBS ETF 464288588 189,548 -41,344 -17.91 20,875 -18.11 0.0088
2020-11-12 2020-09-30 13F ISHARES TR MBS ETF 464288588 230,892 -65,684 -22.15 25,490 -22.37 0.0123
2020-08-13 2020-06-30 13F ISHARES TR MBS ETF 464288588 296,576 -2,841 -0.95 32,834 -0.71 0.0169
2020-05-13 2020-03-31 13F ISHARES TR MBS ETF 464288588 299,417 9,285 3.20 33,068 5.47 0.0221
2020-03-11 2019-12-31 13F/A-1 ISHARES TR MBS ETF 464288588 290,132 -10,018 -3.34 31,352 -3.55 0.0165
2020-02-12 2019-12-31 13F ISHARES TR MBS ETF 464288588 290,132 -10,018 31,352 3,960.1868
2019-11-14 2019-09-30 13F ISHARES TR MBS ETF 464288588 300,150 24,258 8.79 32,506 9.50 0.0177
2019-08-14 2019-06-30 13F ISHARES TR MBS ETF 464288588 275,892 34,291 14.19 29,686 15.52 0.0158
2019-05-15 2019-03-31 13F/A-1 ISHARES TR MBS ETF 464288588 241,601 107,209 79.77 25,697 82.71 0.0138
2019-05-14 2019-03-31 13F ISHARES TR MBS ETF 464288588 241,601 107,209 25,697
2019-02-12 2018-12-31 13F ISHARES TR MBS ETF 464288588 134,392 -14,214 -9.56 14,064 -8.41 0.0085
2018-11-13 2018-09-30 13F ISHARES TR MBS ETF 464288588 148,606 4,689 3.26 15,355 2.41 0.0076
2018-08-14 2018-06-30 13F ISHARES TR MBS ETF 464288588 143,917 36,212 33.62 14,993 33.03 0.0077
2018-05-10 2018-03-31 13F ISHARES TR MBS ETF 464288588 107,705 107,705 11,270 0.0057
2017-11-13 2017-09-30 13F ISHARES TR MBS ETF 464288588 0 -5,884 -100.00 0 -100.00
2017-08-10 2017-06-30 13F ISHARES TR MBS ETF 464288588 5,884 0 0.00 628 0.16 0.0003
2017-05-12 2017-03-31 13F ISHARES TR MBS ETF 464288588 5,884 -35 -0.59 627 -0.32 0.0003
2017-02-14 2016-12-31 13F ISHARES TR MBS ETF 464288588 5,919 0 0.00 629 -3.53 0.0003
2016-11-14 2016-09-30 13F ISHARES TR MBS ETF 464288588 5,919 0 0.00 652 0.15 0.0003
2016-08-11 2016-06-30 13F ISHARES TR MBS ETF 464288588 5,919 -133 -2.20 651 -1.81 0.0004
2016-05-10 2016-03-31 13F ISHARES TR MBS ETF 464288588 6,052 0 0.00 663 1.69 0.0004
2016-04-27 2015-12-31 13F/A-1 ISHARES TR MBS ETF 464288588 6,052 101 1.70 652 0.00 0.0003
2016-02-12 2015-12-31 13F ISHARES TR MBS ETF 464288588 6,052 652
2015-11-10 2015-09-30 13F ISHARES TR MBS ETF 464288588 5,951 5,951 652 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.