iShares Trust - iShares MBS ETF
US ˙ NasdaqGM ˙ US4642885887

SecurityMBB / iShares Trust - iShares MBS ETF
InstitutionSofos Investments, Inc.
Latest Disclosed Ownership136 shares
Latest Disclosed Value $ 12,913
Sofos Investments, Inc. reports 4.23% decrease in ownership of MBB / iShares Trust - iShares MBS ETF

On May 8, 2026 - Sofos Investments, Inc. filed a 13F-HR form disclosing ownership of 136 shares of iShares Trust - iShares MBS ETF (US:MBB) valued at $12,913 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 142 shares of iShares Trust - iShares MBS ETF. This represents a change in shares of -4.23% during the quarter. The current value of the position is $12,813 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)
2026-05-08 2026-03-31 13F ISHARES MBS ETF UIT EXCHANGE TRADED 464288588 136 -6 -4.23 13 -7.69 0.0023
2026-02-13 2025-12-31 13F ISHARES MBS ETF UIT EXCHANGE TRADED 464288588 142 -46 -24.47 14 -23.53 0.0026
2025-11-14 2025-09-30 13F ISHARES TR UIT EXCHANGE TRADED 464288588 188 -424 -69.28 18 -70.18 0.0035
2025-04-30 2025-03-31 13F ISHARES MBS ETF UIT EXCHANGE TRADED 464288588 612 -2,101 -77.44 57 -77.11 0.0125
2024-08-06 2024-06-30 13F ISHARES TR UIT EXCHANGE TRADED 464288588 2,713 -3,182 -53.98 249 -55.05 0.0622
2024-06-26 2024-03-31 13F/A-1 ISHARES TR UIT EXCHANGE TRADED 464288588 5,895 0 0.00 555 0.00 0.1560
2024-05-13 2024-03-31 13F BlackRock Institutional Trust Company N.A. iShares MBS ETF MBS ETF 464288588 3,278 -2,617 303 0.0776
2024-06-26 2023-12-31 13F/A-1 ISHARES MBS ETF UIT EXCHANGE TRADED 464288588 5,895 -340,150 -98.30 555 -78.23 0.1558
2024-02-15 2023-12-31 13F ISHARES TR UIT EXCHANGE TRADED 464288588 346,045 0 2,545 0.0280
2023-11-16 2023-09-30 13F ISHARES TR UIT EXCHANGE TRADED 464288588 346,045 313,036 948.34 2,545 42,316.67 0.0280
2023-08-09 2023-06-30 13F ISHARES TR MBS ETF 464288588 33,009 3,862 13.25 7 200.00 0.0184
2023-05-12 2023-03-31 13F ISHARES TR MBS ETF 464288588 29,147 29,054 31,240.86 3 -93.33 0.0852
2023-02-15 2022-12-31 13F ISHARES TR MBS 464288588 93 -1,471 -94.05 31 275.00 0.1598
2022-11-03 2022-09-30 13F ISHARES TR MBS 464288588 1,564 1,564 9 0.2995
2021-08-11 2021-06-30 13F ISHARES BARCLAYS MBS BOND FUND ETF 464288588 0 -4 -100.00 0 0.0000
2021-05-17 2021-03-31 13F ISHARES BARCLAYS MBS BOND FUND ETF 464288588 4 0 0.00 0 0.0099
2021-02-16 2020-12-31 13F ISHARES BARCLAYS MBS BOND FUND MUTFDETF 464288588 4 4 0 0.0000
2020-08-13 2020-06-30 13F ISHARES BARCLAYS MBS BOND FUND MUTFDETF 464288588 0 -133 -100.00 0 -100.00
2020-05-12 2020-03-31 13F ISHARES BARCLAYS MBS BOND FUND MUTFDETF 464288588 133 29 27.88 14 -88.07 0.0429
2020-02-28 2019-12-31 13F ISHARES TRUST MBS ETF ETF 464288588 104 -31 -22.96 109 626.67 0.0751
2019-10-15 2019-09-30 13F ISHARES MBS ETF ETF 464288588 135 -56 -29.32 15 -28.57 0.0129
2019-07-26 2019-06-30 13F ISHARES MBS ETF ETF 464288588 191 -75 -28.20 21 -25.00 0.0172
2019-04-19 2019-03-31 13F ISHARES MBS ETF ETF 464288588 266 -293 -52.42 28 -50.88 0.0226
2018-10-31 2018-09-30 13F ISHARES MBS ETF ETF 464288588 559 -2 -0.36 57 -1.72 0.0597
2018-08-14 2018-06-30 13F ISHARES MBS ETF ETF 464288588 561 -12 -2.09 58 -1.69 0.0544
2018-05-23 2018-03-31 13F ISHARES MBS ETF ETF 464288588 573 573 59 0.0604
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.