iShares Trust - iShares MBS ETF
US ˙ NasdaqGM ˙ US4642885887

SecurityMBB / iShares Trust - iShares MBS ETF
InstitutionOppenheimer & Co Inc
Latest Disclosed Ownership8,905 shares
Latest Disclosed Value $ 845,530
Oppenheimer & Co Inc reports 17.29% increase in ownership of MBB / iShares Trust - iShares MBS ETF

On April 23, 2026 - Oppenheimer & Co Inc filed a 13F-HR form disclosing ownership of 8,905 shares of iShares Trust - iShares MBS ETF (US:MBB) valued at $845,530 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 7,592 shares of iShares Trust - iShares MBS ETF. This represents a change in shares of 17.29% during the quarter. The current value of the position is $838,050 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 ISHARES TR MBS ETF 464288588 8,905 1,313 17.29 846 17.04 0.0103
2026-02-02 2025-12-31 13F ISHARES TR MBS ETF 464288588 7,592 -9,655 -55.98 723 -56.00 0.0103
2025-11-06 2025-09-30 13F ISHARES TR MBS ETF 464288588 17,247 1,005 6.19 1,641 7.68 0.0200
2025-07-31 2025-06-30 13F ISHARES TR MBS ETF 464288588 16,242 2,240 16.00 1,525 16.07 0.0202
2025-04-23 2025-03-31 13F ISHARES TR MBS ETF 464288588 14,002 -321 -2.24 1,313 0.00 0.0198
2025-02-05 2024-12-31 13F ISHARES TR MBS ETF 464288588 14,323 289 2.06 1,313 -2.31 0.0196
2024-11-05 2024-09-30 13F ISHARES TR MBS ETF 464288588 14,034 -2,388 -14.54 1,345 -10.82 0.0205
2024-08-08 2024-06-30 13F ISHARES TR MBS ETF 464288588 16,422 1,083 7.06 1,508 6.35 0.0239
2024-05-07 2024-03-31 13F ISHARES TR MBS ETF 464288588 15,339 1,944 14.51 1,418 12.46 0.0235
2024-02-13 2023-12-31 13F ISHARES TR MBS ETF 464288588 13,395 3,016 29.06 1,260 36.81 0.0232
2023-11-08 2023-09-30 13F ISHARES TR MBS ETF 464288588 10,379 1,680 19.31 922 13.56 0.0190
2023-08-03 2023-06-30 13F ISHARES TR MBS ETF 464288588 8,699 8,699 811 0.0162
2022-08-08 2022-06-30 13F ISHARES TR MBS ETF 464288588 0 -4,623 -100.00 0 -100.00
2022-05-12 2022-03-31 13F ISHARES TR MBS ETF 464288588 4,623 -6,295 -57.66 471 -59.85 0.0085
2022-02-02 2021-12-31 13F ISHARES TR MBS ETF 464288588 10,918 -3,756 -25.60 1,173 -26.09 0.0205
2021-11-12 2021-09-30 13F ISHARES TR MBS ETF 464288588 14,674 -1,908 -11.51 1,587 -11.54 0.0297
2021-08-03 2021-06-30 13F ISHARES TR MBS ETF 464288588 16,582 4,156 33.45 1,794 33.18 0.0322
2021-05-10 2021-03-31 13F ISHARES TR MBS ETF 464288588 12,426 86 0.70 1,347 -0.88 0.0269
2021-02-11 2020-12-31 13F ISHARES TR MBS ETF 464288588 12,340 4,697 61.45 1,359 61.02 0.0287
2020-11-13 2020-09-30 13F ISHARES TR MBS ETF 464288588 7,643 1,937 33.95 844 33.54 0.0211
2020-08-11 2020-06-30 13F ISHARES TR MBS ETF 464288588 5,706 1,456 34.26 632 34.47 0.0164
2020-05-08 2020-03-31 13F ISHARES TR MBS ETF 464288588 4,250 2,069 94.86 470 99.15 0.0143
2020-02-07 2019-12-31 13F ISHARES TR MBS ETF 464288588 2,181 312 16.69 236 16.83 0.0058
2019-10-31 2019-09-30 13F ISHARES TR MBS ETF 464288588 1,869 1,869 202 0.0055
2018-08-10 2018-06-30 13F ISHARES TR MBS ETF 464288588 0 -2,022 -100.00 0 -100.00
2018-05-01 2018-03-31 13F ISHARES TR MBS ETF 464288588 2,022 2,022 212 0.0054
2017-02-01 2016-12-31 13F ISHARES TR MBS ETF 464288588 0 -30,457 -100.00 0 -100.00
2016-11-07 2016-09-30 13F ISHARES TR MBS ETF 464288588 30,457 -111 -0.36 3,353 -0.27 0.0978
2016-08-08 2016-06-30 13F ISHARES TR MBS ETF 464288588 30,568 3,633 13.49 3,362 14.00 0.1002
2016-04-26 2016-03-31 13F ISHARES TR MBS ETF 464288588 26,935 2,839 11.78 2,949 13.64 0.0896
2016-02-03 2015-12-31 13F ISHARES TR MBS ETF 464288588 24,096 6,420 36.32 2,595 33.90 0.0772
2015-11-13 2015-09-30 13F ISHARES TR MBS ETF 464288588 17,676 412 2.39 1,938 3.36 0.0589
2015-08-12 2015-06-30 13F ISHARES MBS ETF 464288588 17,264 1,560 9.93 1,875 8.19 0.0522
2015-05-08 2015-03-31 13F ISHARES MBS ETF 464288588 15,704 676 4.50 1,733 5.48 0.0472
2015-02-10 2014-12-31 13F ISHARES MBS ETF 464288588 15,028 -419 -2.71 1,643 -1.62 0.0472
2014-11-12 2014-09-30 13F ISHARES MBS ETF 464288588 15,447 1,251 8.81 1,670 8.72 0.0497
2014-08-14 2014-06-30 13F ISHARES MBS ETF 464288588 14,196 -1,911 -11.86 1,536 -10.12 0.0462
2014-05-09 2014-03-31 13F ISHARES MBS ETF 464288588 16,107 4,381 37.36 1,709 39.40 0.0512
2014-02-12 2013-12-31 13F ISHARES MBS ETF 464288588 11,726 1,520 14.89 1,226 13.41 0.0392
2013-11-01 2013-09-30 13F ISHARES MBS ETF 464288588 10,206 -882 -7.95 1,081 -7.37 0.0380
2013-08-14 2013-06-30 13F ISHARES TR BARCLYS MBS BD 464288588 11,088 11,088 1,167 0.0451
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.