iShares Trust - iShares MBS ETF
US ˙ NasdaqGM ˙ US4642885887

SecurityMBB / iShares Trust - iShares MBS ETF
InstitutionKovack Advisors, Inc.
Latest Disclosed Ownership4,461 shares
Latest Disclosed Value $ 423,064
Kovack Advisors, Inc. reports 7.27% decrease in ownership of MBB / iShares Trust - iShares MBS ETF

On May 12, 2026 - Kovack Advisors, Inc. filed a 13F-HR form disclosing ownership of 4,461 shares of iShares Trust - iShares MBS ETF (US:MBB) valued at $423,572 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on February 17, 2026 disclosing 4,811 shares of iShares Trust - iShares MBS ETF. This represents a change in shares of -7.27% during the quarter. The current value of the position is $420,271 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)
2026-05-12 2026-03-31 13F ISHARES TR MBS ETF 464288588 4,461 -350 -7.27 423 -7.64 0.0226
2026-02-17 2025-12-31 13F/A-1 ISHARES TR MBS ETF 464288588 4,811 4,811 458 0.0213
2026-02-12 2025-12-31 13F ISHARES TR MBS ETF 464288588 4,810 4,810 210
2024-02-02 2023-12-31 13F ISHARES TR MBS ETF 464288588 0 -2,393 -100.00 0 -100.00
2023-10-19 2023-09-30 13F ISHARES TR MBS ETF 464288588 2,393 -3 -0.13 212 -4.93 0.0296
2023-07-21 2023-06-30 13F ISHARES TR MBS ETF 464288588 2,396 60 2.57 223 0.90 0.0286
2023-04-21 2023-03-31 13F ISHARES TR MBS ETF 464288588 2,336 2,336 221 0.0302
2022-01-18 2021-12-31 13F ISHARES MBS ETF ETF 464288588 0 -3,600 -100.00 0 -100.00
2021-11-03 2021-09-30 13F ISHARES MBS ETF ETF 464288588 3,600 -223 -5.83 389 -6.04 0.0423
2021-07-29 2021-06-30 13F ISHARES MBS ETF ETF 464288588 3,823 -281 -6.85 414 -6.97 0.0471
2021-05-04 2021-03-31 13F ISHARES MBS ETF ETF 464288588 4,104 782 23.54 445 21.58 0.0578
2021-01-14 2020-12-31 13F ISHARES MBS ETF ETF 464288588 3,322 595 21.82 366 21.59 0.0527
2020-11-02 2020-09-30 13F ISHARES MBS ETF MBS ETF 464288588 2,727 -186 -6.39 301 -6.52 0.0536
2020-07-31 2020-06-30 13F ISHARES MBS ETF ETF 464288588 2,913 -528 -15.34 322 -15.26 0.0627
2020-04-30 2020-03-31 13F ISHARES MBS ETF MBS ETF 464288588 3,441 1,109 47.56 380 50.79 0.0878
2020-01-29 2019-12-31 13F ISHARES MBS ETF MBS ETF 464288588 2,332 2,332 252 0.0450
2018-08-01 2018-06-30 13F ISHARES TR MBS ETF MBS ETF 464288588 0 -5,013 -100.00 0 -100.00
2018-05-15 2018-03-31 13F ISHARES TR MBS ETF MBS ETF 464288588 5,013 56 1.13 525 -0.57 0.1317
2018-05-15 2017-12-31 13F/A-1 ISHARES TR MBS ETF 464288588 4,957 315 6.79 528 6.24 0.1334
2018-08-02 2017-09-30 13F ISHARES TR MBS ETF MBS ETF 464288588 4,642 -139 -2.91 497 -2.55 0.1649
2018-08-30 2017-06-30 13F ISHARES TR MBS ETF MBS ETF 464288588 4,781 141 3.04 510 3.24 0.1609
2018-09-05 2017-03-31 13F ISHARES TR MBS ETF MBS ETF 464288588 4,640 0 0.00 494 0.20 0.1923
2018-09-10 2016-12-31 13F ISHARES TR MBS ETF 464288588 4,640 51 1.11 493 -2.38 0.2346
2018-09-25 2016-09-30 13F ISHARES TR MBS ETF MBS ETF 464288588 4,589 4,589 505 0.2458
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.