iShares Trust - iShares Core Universal USD Bond ETF
US ˙ NasdaqGM ˙ US46434V6130

SecurityIUSB / iShares Trust - iShares Core Universal USD Bond ETF
InstitutionMorgan Stanley
Latest Disclosed Ownership25,978,502 shares
Latest Disclosed Value $ 1,199,947,079
Morgan Stanley reports 5.17% increase in ownership of IUSB / iShares Trust - iShares Core Universal USD Bond ETF

On May 15, 2026 - Morgan Stanley filed a 13F-HR form disclosing ownership of 25,978,502 shares of iShares Trust - iShares Core Universal USD Bond ETF (US:IUSB) valued at $1,199,947,007 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on May 27, 2026 disclosing 24,700,344 shares of iShares Trust - iShares Core Universal USD Bond ETF. This represents a change in shares of 5.17% during the quarter. The current value of the position is $1,189,815,392 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)
2026-05-15 2026-03-31 13F ISHARES TR CORE UNIVRSL USD 46434V613 25,978,502 1,278,158 5.17 1,199,947 4.38 0.0723
2026-05-27 2025-12-31 13F/A-1 ISHARES TR CORE UNIVRSL USD 46434V613 24,700,344 1,931,838 8.48 1,149,554 8.09 0.0686
2026-02-13 2025-12-31 13F ISHARES TR CORE UNIVRSL USD 46434V613 24,700,344 1,931,838 1,149,554 0.0686
2026-05-27 2025-09-30 13F/A-1 ISHARES TR CORE TOTAL USD 46434V613 22,768,506 -645,399 -2.76 1,063,517 -1.75 0.0644
2025-11-14 2025-09-30 13F ISHARES TR CORE TOTAL USD 46434V613 22,768,506 -645,399 1,063,517 0.0644
2025-08-15 2025-06-30 13F ISHARES TR CORE TOTAL USD 46434V613 23,413,905 778,913 3.44 1,082,425 3.78 0.0705
2025-05-15 2025-03-31 13F ISHARES TR CORE TOTAL USD 46434V613 22,634,992 -703,016 -3.01 1,043,020 -1.12 0.0746
2025-05-15 2024-12-31 13F/A-1 ISHARES TR CORE TOTAL USD 46434V613 23,338,008 1,721,990 7.97 1,054,878 3.57 0.0739
2025-02-14 2024-12-31 13F ISHARES TR CORE TOTAL USD 46434V613 23,338,008 1,721,990 1,054,878 0.0739
2025-05-14 2024-09-30 13F/A-2 ISHARES TR CORE TOTAL USD 46434V613 21,616,018 2,524,294 13.22 1,018,547 17.98 0.0739
2025-02-14 2024-09-30 13F/A-1 ISHARES TR CORE TOTAL USD 46434V613 21,616,018 2,524,294 1,018,547 0.0738
2024-11-14 2024-09-30 13F ISHARES TR CORE TOTAL USD 46434V613 21,616,018 2,524,294 1,018,547 0.0088
2025-05-14 2024-06-30 13F/A-2 ISHARES TR CORE TOTAL USD 46434V613 19,091,724 -196,644 -1.02 863,328 -1.82 0.0668
2024-10-17 2024-06-30 13F/A-1 ISHARES TR CORE TOTAL USD 46434V613 19,091,724 -196,644 863,328 0.0668
2024-08-14 2024-06-30 13F ISHARES TR CORE TOTAL USD 46434V613 19,091,724 -196,644 863,328 0.0668
2024-10-17 2024-03-31 13F/A-2 ISHARES TR CORE TOTAL USD 46434V613 19,288,368 4,731,052 32.50 879,357 31.12 0.0706
2024-08-16 2024-03-31 13F/A-1 ISHARES TR CORE TOTAL USD 46434V613 19,288,368 4,731,052 879,357 0.0083
2024-05-15 2024-03-31 13F ISHARES TR CORE TOTAL USD 46434V613 19,288,368 4,731,052 879,357 0.0706
2024-08-16 2023-12-31 13F/A-1 ISHARES TR CORE TOTAL USD 46434V613 14,557,316 953,965 7.01 670,656 12.78 0.0591
2024-02-13 2023-12-31 13F ISHARES TR CORE TOTAL USD 46434V613 14,557,316 953,965 670,656 0.0591
2023-11-15 2023-09-30 13F ISHARES TR CORE TOTAL USD 46434V613 13,603,351 -517,049 -3.66 594,671 -7.38 0.0605
2023-08-14 2023-06-30 13F ISHARES TR CORE TOTAL USD 46434V613 14,120,400 105,736 0.75 642,055 -0.73 0.0633
2023-05-15 2023-03-31 13F ISHARES TR CORE TOTAL USD 46434V613 14,014,664 1,483,420 11.84 646,777 14.87 0.0693
2023-02-14 2022-12-31 13F ISHARES TR CORE TOTAL USD 46434V613 12,531,244 138,271 1.12 563,029 2.09 0.0639
2022-11-14 2022-09-30 13F ISHARES TR CORE TOTAL USD 46434V613 12,392,973 -1,092,738 -8.10 551,488 -12.66 0.0752
2022-10-27 2022-06-30 13F/A-1 ISHARES TR CORE TOTAL USD 46434V613 13,485,711 459,557 3.53 631,401 -2.33 0.0820
2022-08-15 2022-06-30 13F ISHARES TR CORE TOTAL USD 46434V613 13,485,711 459,557 631,401 0.0820
2022-10-27 2022-03-31 13F/A-1 ISHARES TR CORE TOTAL USD 46434V613 13,026,154 2,040,438 18.57 646,488 11.18 0.0872
2022-05-13 2022-03-31 13F ISHARES TR CORE TOTAL USD 46434V613 13,026,154 2,040,438 646,488 0.0872
2022-02-14 2021-12-31 13F ISHARES TR CORE TOTAL USD 46434V613 10,985,716 -165,774 -1.49 581,474 -2.06 0.0718
2021-11-15 2021-09-30 13F ISHARES TR CORE TOTAL USD 46434V613 11,151,490 934,701 9.15 593,705 8.64 0.0800
2021-08-23 2021-06-30 13F/A-1 ISHARES TR CORE TOTAL USD 46434V613 10,216,789 1,397,989 15.85 546,497 17.48 0.0721
2021-08-16 2021-06-30 13F ISHARES TR CORE TOTAL USD 46434V613 10,216,789 1,397,989 546,497 0.0150
2021-05-17 2021-03-31 13F ISHARES TR CORE TOTAL USD 46434V613 8,818,800 4,228,837 92.13 465,191 85.69 0.0683
2021-02-16 2020-12-31 13F ISHARES TR CORE TOTAL USD 46434V613 4,589,963 -390,813 -7.85 250,521 -7.51 0.0387
2020-11-13 2020-09-30 13F ISHARES TR CORE TOTAL USD 46434V613 4,980,776 285,559 6.08 270,855 6.18 0.0524
2020-08-14 2020-06-30 13F ISHARES TR CORE TOTAL USD 46434V613 4,695,217 46,913 1.01 255,091 4.53 0.0565
2020-05-26 2020-03-31 13F/A-1 ISHARES TR CORE TOTAL USD 46434V613 4,648,304 66,490 1.45 244,036 2.21 0.0663
2020-05-15 2020-03-31 13F ISHARES TR CORE TOTAL USD 46434V613 4,648,304 66,490 244,036 18,747.0521
2020-02-14 2019-12-31 13F ISHARES TR CORE TOTAL USD 46434V613 4,581,814 291,021 6.78 238,758 6.17 0.0555
2019-11-14 2019-09-30 13F ISHARES TR CORE TOTAL USD 46434V613 4,290,793 1,062 0.02 224,881 1.44 0.0595
2019-08-14 2019-06-30 13F ISHARES TR CORE TOTAL USD 46434V613 4,289,731 193,256 4.72 221,693 6.95 0.0590
2019-05-15 2019-03-31 13F ISHARES TR CORE TOTAL USD 46434V613 4,096,475 -215,901 -5.01 207,281 -2.39 0.0587
2019-02-14 2018-12-31 13F ISHARES TR CORE TOTAL USD 46434V613 4,312,376 3,097,574 254.99 212,363 255.74 0.0635
2019-04-23 2018-09-30 13F/A-2 ISHARES TR CORE TOTAL USD 46434V613 1,214,802 59,036 5.11 59,696 4.66 0.0149
2018-11-20 2018-09-30 13F/A-1 ISHARES TR CORE TOTAL USD 46434V613 1,214,802 0 59,696 0.0149
2018-11-14 2018-09-30 13F ISHARES TR CORE TOTAL USD 46434V613 1,214,802 59,036 59,696
2019-04-23 2018-06-30 13F/A-1 ISHARES TR CORE TOTAL USD 46434V613 1,155,766 5,285 0.46 57,037 -0.73 0.0154
2018-08-14 2018-06-30 13F ISHARES TR CORE TOTAL USD 46434V613 1,155,766 5,285 57,037
2019-04-23 2018-03-31 13F/A-1 ISHARES TR CORE TOTAL USD 46434V613 1,150,481 250,215 27.79 57,455 25.46 0.0159
2018-05-14 2018-03-31 13F ISHARES TR CORE TOTAL USD 46434V613 1,150,481 250,215 57,455
2019-04-23 2017-12-31 13F/A-1 ISHARES TR CORE TOTAL USD 46434V613 900,266 466,233 107.42 45,796 106.59 0.0125
2018-02-14 2017-12-31 13F ISHARES TR CORE TOTAL USD 46434V613 900,266 466,233 45,796
2017-11-14 2017-09-30 13F ISHARES TR CORE TOTAL USD 46434V613 434,033 -2,353 -0.54 22,168 -0.30 0.0066
2017-08-11 2017-06-30 13F ISHARES TR CORE TL USD BD 46434V613 436,386 -246,896 -36.13 22,234 -35.59 0.0067
2017-05-22 2017-03-31 13F/A-1 ISHARES TR CORE TL USD BD 46434V613 683,282 434,255 174.38 34,520 175.74 0.0106
2017-05-12 2017-03-31 13F ISHARES TR CORE TL USD BD 46434V613 683,282 34,520
2017-02-22 2016-12-31 13F/A-1 ISHARES TR CORE TL USD BD 46434V613 249,027 105,870 73.95 12,519 67.88 0.0041
2017-02-13 2016-12-31 13F ISHARES TR CORE TL USD BD 46434V613 249,027 12,519
2016-11-10 2016-09-30 13F ISHARES TR CORE TL USD BD 46434V613 143,157 98,435 220.10 7,457 60.30 0.0025
2016-08-12 2016-06-30 13F ISHARES TR CORE TL USD BD 46434V613 44,722 14,616 48.55 4,652 51.73 0.0017
2016-05-12 2016-03-31 13F ISHARES TR CORE TL USD BD 46434V613 30,106 -18,775 -38.41 3,066 -36.76 0.0012
2016-02-09 2015-12-31 13F ISHARES TR CORE TL USD BD 46434V613 48,881 40,901 512.54 4,848 506.00 0.0018
2016-02-08 2015-09-30 13F/A-1 ISHARES TR CORE TL USD BD 46434V613 7,980 5,389 207.99 800 207.69 0.0003
2015-11-09 2015-09-30 13F ISHARES TR CORE TL USD BD 46434V613 7,980 800
2015-08-12 2015-06-30 13F ISHARES TR CORE TL USD BD 46434V613 2,591 2,427 1,479.88 260 1,525.00 0.0001
2015-05-14 2015-03-31 13F ISHARES TR CORE TL USD BD 46434V613 164 164 16 0.0000
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.