iShares Trust - iShares MBS ETF
US ˙ NasdaqGM ˙ US4642885887

SecurityMBB / iShares Trust - iShares MBS ETF
InstitutionCourier Capital Llc
Latest Disclosed Ownership233,967 shares
Latest Disclosed Value $ 22,215,167
Courier Capital Llc reports 7.12% increase in ownership of MBB / iShares Trust - iShares MBS ETF

On April 23, 2026 - Courier Capital Llc filed a 13F-HR/A form disclosing ownership of 233,967 shares of iShares Trust - iShares MBS ETF (US:MBB) valued at $22,215,167 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 218,425 shares of iShares Trust - iShares MBS ETF. This represents a change in shares of 7.12% during the quarter. The current value of the position is $22,042,031 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)
2026-04-23 2026-03-31 13F/A-1 ISHARES TR MBS ETF 464288588 233,967 15,542 7.12 22,215 6.81 1.2418
2026-04-20 2026-03-31 13F ISHARES TR MBS ETF 464288588 233,967 15,542 7.12 22,215 6.81 1.2418
2026-01-29 2025-12-31 13F ISHARES TR MBS ETF 464288588 218,425 18,153 9.06 20,798 9.15 1.1679
2025-10-29 2025-09-30 13F ISHARES TR MBS ETF 464288588 200,272 12,889 6.88 19,056 8.31 1.0917
2025-07-28 2025-06-30 13F ISHARES TR MBS ETF 464288588 187,383 25,656 15.86 17,593 16.00 1.0681
2025-04-14 2025-03-31 13F ISHARES TR MBS ETF 464288588 161,727 107,044 195.75 15,167 202.53 0.9925
2025-01-13 2024-12-31 13F ISHARES TR MBS ETF 464288588 54,683 48,488 782.70 5,013 745.36 0.3458
2024-10-22 2024-09-30 13F ISHARES TR MBS ETF 464288588 6,195 0 0.00 594 4.40 0.0407
2024-07-23 2024-06-30 13F ISHARES TR MBS ETF 464288588 6,195 0 0.00 569 -0.70 0.0452
2024-04-16 2024-03-31 13F ISHARES TR MBS ETF 464288588 6,195 0 0.00 573 -1.72 0.0414
2024-01-17 2023-12-31 13F ISHARES TR MBS ETF 464288588 6,195 0 0.00 583 5.82 0.0442
2023-10-13 2023-09-30 13F ISHARES TR MBS ETF 464288588 6,195 121 1.99 550 -2.83 0.0456
2023-07-31 2023-06-30 13F ISHARES TR MBS ETF 464288588 6,074 0 0.00 566 -1.57 0.0446
2023-05-18 2023-03-31 13F ISHARES TR MBS ETF 464288588 6,074 174 2.95 575 5.12 0.0636
2023-01-24 2022-12-31 13F ISHARES TR MBS ETF 464288588 5,900 -17 -0.29 547 0.92 0.0631
2022-10-18 2022-09-30 13F ISHARES TR MBS ETF 464288588 5,917 17 0.29 542 -5.74 0.0671
2022-07-20 2022-06-30 13F ISHARES TR MBS ETF 464288588 5,900 0 0.00 575 -4.33 0.0673
2022-05-02 2022-03-31 13F ISHARES TR MBS ETF 464288588 5,900 0 0.00 601 -5.21 0.0601
2022-01-18 2021-12-31 13F ISHARES TR MBS ETF 464288588 5,900 0 0.00 634 -0.63 0.0590
2021-10-14 2021-09-30 13F ISHARES TR MBS ETF 464288588 5,900 0 0.00 638 -0.16 0.0607
2021-07-12 2021-06-30 13F ISHARES TR MBS ETF 464288588 5,900 126 2.18 639 2.08 0.0608
2021-04-12 2021-03-31 13F ISHARES TR MBS ETF 464288588 5,774 5,774 626 0.0632
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.