iShares Trust - iShares MBS ETF
US ˙ NasdaqGM ˙ US4642885887

SecurityMBB / iShares Trust - iShares MBS ETF
InstitutionWhittier Trust Co
Latest Disclosed Ownership432 shares
Latest Disclosed Value $ 40,893
Whittier Trust Co reports 83.65% decrease in ownership of MBB / iShares Trust - iShares MBS ETF

On April 28, 2026 - Whittier Trust Co filed a 13F-HR form disclosing ownership of 432 shares of iShares Trust - iShares MBS ETF (US:MBB) valued at $41,018 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 2,643 shares of iShares Trust - iShares MBS ETF. This represents a change in shares of -83.65% during the quarter. The current value of the position is $40,496 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)
2026-04-28 2026-03-31 13F ISHARES BARCLAYS MBS common 464288588 432 -2,211 -83.65 41 -84.06 0.0005
2026-01-26 2025-12-31 13F ISHARES BARCLAYS MBS common 464288588 2,643 0 0.00 252 0.00 0.0027
2025-10-31 2025-09-30 13F ISHARES TR common 464288588 2,643 -646 -19.64 251 -18.51 0.0029
2025-07-30 2025-06-30 13F ISHARES MORTGAGE - BACKED INV. GRADE ETF FIXED INCOME 464288588 3,289 0 0.00 309 0.00 0.0037
2025-05-02 2025-03-31 13F ISHARES MORTGAGE - BACKED INV. GRADE ETF FIXED INCOME 464288588 3,289 695 26.79 308 29.96 0.0043
2025-02-11 2024-12-31 13F ISHARES MORTGAGE - BACKED INV. GRADE ETF FIXED INCOME 464288588 2,594 -387 -12.98 238 -16.84 0.0031
2024-10-21 2024-09-30 13F ISHARES MORTGAGE - BACKED INV. GRADE ETF FIXED INCOME 464288588 2,981 0 0.00 286 4.40 0.0038
2024-07-29 2024-06-30 13F ISHARES MORTGAGE - BACKED INV. GRADE ETF FIXED INCOME 464288588 2,981 -165 -5.24 274 -5.86 0.0039
2024-05-02 2024-03-31 13F ISHARES MORTGAGE - BACKED INV. GRADE ETF FIXED INCOME 464288588 3,146 -20 -0.63 291 -2.36 0.0042
2024-01-11 2023-12-31 13F ISHARES MORTGAGE - BACKED INV. GRADE ETF FIXED INCOME 464288588 3,166 -2,379 -42.90 298 -39.63 0.0048
2023-10-27 2023-09-30 13F ISHARES MORTGAGE - BACKED INV. GRADE ETF FIXED INCOME 464288588 5,545 546 10.92 492 5.58 0.0088
2023-07-24 2023-06-30 13F ISHARES MORTGAGE - BACKED INV. GRADE ETF FIXED INCOME 464288588 4,999 0 0.00 466 -1.48 0.0081
2023-04-21 2023-03-31 13F ISHARES MORTGAGE - BACKED INV. GRADE ETF FIXED INCOME 464288588 4,999 0 0.00 474 2.16 0.0086
2023-01-25 2022-12-31 13F ISHARES MORTGAGE - BACKED INV. GRADE FIXED INCOME TAXABLE 464288588 4,999 319 6.82 464 7.93 0.0090
2022-10-21 2022-09-30 13F ISHARES MORTGAGE - BACKED INV. GRADE FIXED INCOME TAXABLE 464288588 4,680 -26,516 -85.00 429 -85.89 0.0090
2022-07-28 2022-06-30 13F ISHARES MORTGAGE - BACKED INV. GRADE FIXED INCOME TAXABLE 464288588 31,196 31,095 30,787.13 3,041 30,310.00 0.0614
2022-04-29 2022-03-31 13F ISHARES MORTGAGE - BACKED INV. GRADE FIXED INCOME TAXABLE 464288588 101 -450 -81.67 10 -83.05 0.0002
2022-01-19 2021-12-31 13F ISHARES MORTGAGE - BACKED INV. GRADE FIXED INCOME TAXABLE 464288588 551 0 0.00 59 -1.67 0.0010
2021-11-01 2021-09-30 13F ISHARES MORTGAGE - BACKED INV. GRADE FIXED INCOME TAXABLE 464288588 551 -1,073 -66.07 60 -65.91 0.0011
2021-07-29 2021-06-30 13F ISHARES MORTGAGE - BACKED INV. GRADE FIXED INCOME TAXABLE 464288588 1,624 0 0.00 176 0.00 0.0031
2021-04-26 2021-03-31 13F ISHARES MORTGAGE - BACKED INV. GRADE FIXED INCOME TAXABLE 464288588 1,624 0 0.00 176 -1.68 0.0034
2021-01-29 2020-12-31 13F ISHARES MORTGAGE - BACKED INV. GRADE FIXED INCOME TAXABLE 464288588 1,624 450 38.33 179 37.69 0.0038
2020-10-30 2020-09-30 13F ISHARES MORTGAGE - BACKED INV. GRADE FIXED INCOME TAXABLE 464288588 1,174 -497 -29.74 130 -29.73 0.0031
2020-07-10 2020-06-30 13F ISHARES MORTGAGE - BACKED INV. GRADE FIXED INCOME TAXABLE 464288588 1,671 1,073 179.43 185 180.30 0.0051
2020-04-27 2020-03-31 13F ISHARES MORTGAGE - BACKED INV. GRADE FIXED INCOME TAXABLE 464288588 598 -17 -2.76 66 0.00 0.0022
2020-01-31 2019-12-31 13F ISHARES MORTGAGE - BACKED INV. GRADE FIXED INCOME TAXABLE 464288588 615 -38 -5.82 66 -7.04 0.0017
2019-10-18 2019-09-30 13F ISHARES MORTGAGE - BACKED INV. GRADE FIXED INCOME TAXABLE 464288588 653 55 9.20 71 10.94 0.0020
2019-07-23 2019-06-30 13F ISHARES MORTGAGE - BACKED INV. GRADE FIXED INCOME TAXABLE 464288588 598 0 0.00 64 0.00 0.0019
2019-04-29 2019-03-31 13F ISHARES MORTGAGE - BACKED INV. GRADE FIXED INCOME TAXABLE 464288588 598 0 0.00 64 1.59 0.0020
2019-02-07 2018-12-31 13F ISHARES MORTGAGE - BACKED INV. GRADE FIXED INCOME TAXABLE 464288588 598 0 0.00 63 1.61 0.0022
2018-10-23 2018-09-30 13F ISHARES MORTGAGE - BACKED INV. GRADE FIXED INCOME TAXABLE 464288588 598 497 492.08 62 463.64 0.0019
2018-07-27 2018-06-30 13F/A-1 ISHARES MORTGAGE - BACKED INV. GRADE FIXED INCOME TAXABLE 464288588 101 0 0.00 11 0.00 0.0004
2018-05-01 2018-03-31 13F ISHARES MORTGAGE - BACKED INV. GRADE FIXED INCOME TAXABLE 464288588 101 0 0.00 11 0.00 0.0004
2018-02-07 2017-12-31 13F ISHARES MORTGAGE - BACKED INV. GRADE FIXED INCOME TAXABLE 464288588 101 0 0.00 11 0.00 0.0004
2017-10-23 2017-09-30 13F ISHARES MORTGAGE - BACKED INV. GRADE FIXED INCOME TAXABLE 464288588 101 0 0.00 11 0.00 0.0004
2017-07-20 2017-06-30 13F ISHARES MORTGAGE - BACKED INV. GRADE FIXED INCOME TAXABLE 464288588 101 0 0.00 11 0.00 0.0004
2017-04-26 2017-03-31 13F ISHARES TR FIXED INCOME TAXABLE 464288588 101 101 11 0.0004
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.