iShares Trust - iShares Core U.S. Aggregate Bond ETF
US ˙ ARCA ˙ US4642872265

SecurityAGG / iShares Trust - iShares Core U.S. Aggregate Bond ETF
InstitutionMorgan Stanley
Latest Disclosed Ownership32,522,000 shares
Latest Disclosed Value $ 3,228,459,317
Morgan Stanley reports 0.12% increase in ownership of AGG / iShares Trust - iShares Core U.S. Aggregate Bond ETF

On May 15, 2026 - Morgan Stanley filed a 13F-HR form disclosing ownership of 32,522,000 shares of iShares Trust - iShares Core U.S. Aggregate Bond ETF (US:AGG) valued at $3,228,458,940 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on May 27, 2026 disclosing 32,483,415 shares of iShares Trust - iShares Core U.S. Aggregate Bond ETF. This represents a change in shares of 0.12% during the quarter. The current value of the position is $3,203,417,000 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 US AGGBD ET 464287226 32,522,000 38,585 0.12 3,228,459 -0.49 0.1945
2026-05-27 2025-12-31 13F/A-1 ISHARES TR CORE US AGGBD ET 464287226 32,483,415 1,245,217 3.99 3,244,444 3.60 0.1937
2026-02-13 2025-12-31 13F ISHARES TR CORE US AGGBD ET 464287226 32,483,415 1,245,217 3,244,444 0.1937
2026-05-27 2025-09-30 13F/A-1 ISHARES TR CORE US AGGBD ET 464287226 31,238,198 762,957 2.50 3,131,630 3.59 0.1896
2025-11-14 2025-09-30 13F ISHARES TR CORE US AGGBD ET 464287226 31,238,198 762,957 3,131,630 0.1896
2025-08-15 2025-06-30 13F ISHARES TR CORE US AGGBD ET 464287226 30,475,241 -932,850 -2.97 3,023,144 -2.70 0.1969
2025-05-15 2025-03-31 13F ISHARES TR CORE US AGGBD ET 464287226 31,408,091 -1,204,307 -3.69 3,106,889 -1.69 0.2221
2025-05-15 2024-12-31 13F/A-1 ISHARES TR CORE US AGGBD ET 464287226 32,612,398 4,450,821 15.80 3,160,142 10.81 0.2214
2025-02-14 2024-12-31 13F ISHARES TR CORE US AGGBD ET 464287226 32,612,398 4,450,821 3,160,142 0.2214
2025-05-14 2024-09-30 13F/A-2 ISHARES TR CORE US AGGBD ET 464287226 28,161,577 2,708,590 10.64 2,851,923 15.43 0.2068
2025-02-14 2024-09-30 13F/A-1 ISHARES TR CORE US AGGBD ET 464287226 28,161,577 2,708,590 2,851,923 0.2068
2024-11-14 2024-09-30 13F ISHARES TR CORE US AGGBD ET 464287226 28,161,577 2,708,590 2,851,923 0.0245
2025-05-14 2024-06-30 13F/A-2 ISHARES TR CORE US AGGBD ET 464287226 25,452,987 -1,663,181 -6.13 2,470,722 -6.97 0.1912
2024-10-17 2024-06-30 13F/A-1 ISHARES TR CORE US AGGBD ET 464287226 25,452,987 -1,663,181 2,470,722 0.1912
2024-08-14 2024-06-30 13F ISHARES TR CORE US AGGBD ET 464287226 25,452,987 -1,663,181 2,470,722 0.1912
2024-10-17 2024-03-31 13F/A-2 ISHARES TR CORE US AGGBD ET 464287226 27,116,168 -776,597 -2.78 2,655,758 -4.07 0.2131
2024-08-16 2024-03-31 13F/A-1 ISHARES TR CORE US AGGBD ET 464287226 27,116,168 -776,597 2,655,758 0.0250
2024-05-15 2024-03-31 13F ISHARES TR CORE US AGGBD ET 464287226 27,116,168 -776,597 2,655,758 0.2131
2024-08-16 2023-12-31 13F/A-1 ISHARES TR CORE US AGGBD ET 464287226 27,892,765 2,821,776 11.26 2,768,357 17.42 0.2440
2024-02-13 2023-12-31 13F ISHARES TR CORE US AGGBD ET 464287226 27,892,765 2,821,776 2,768,357 0.2440
2023-11-15 2023-09-30 13F ISHARES TR CORE US AGGBD ET 464287226 25,070,989 440,988 1.79 2,357,676 -2.27 0.2397
2023-08-14 2023-06-30 13F ISHARES TR CORE US AGGBD ET 464287226 24,630,001 -1,383,183 -5.32 2,412,509 -6.92 0.2378
2023-05-15 2023-03-31 13F ISHARES TR CORE US AGGBD ET 464287226 26,013,184 4,058,353 18.49 2,591,954 21.72 0.2779
2023-02-14 2022-12-31 13F ISHARES TR CORE US AGGBD ET 464287226 21,954,831 1,605,545 7.89 2,129,399 8.62 0.2418
2022-11-14 2022-09-30 13F ISHARES TR CORE US AGGBD ET 464287226 20,349,286 3,576,174 21.32 1,960,452 14.95 0.2672
2022-10-27 2022-06-30 13F/A-1 ISHARES TR CORE US AGGBD ET 464287226 16,773,112 1,329,418 8.61 1,705,491 3.11 0.2214
2022-08-15 2022-06-30 13F ISHARES TR CORE US AGGBD ET 464287226 16,773,112 1,329,418 1,705,491 0.0446
2022-10-27 2022-03-31 13F/A-1 ISHARES TR CORE US AGGBD ET 464287226 15,443,694 224,045 1.47 1,654,020 -4.74 0.2231
2022-05-13 2022-03-31 13F ISHARES TR CORE US AGGBD ET 464287226 15,443,694 224,045 1,654,020 0.2231
2022-02-14 2021-12-31 13F ISHARES TR CORE US AGGBD ET 464287226 15,219,649 386,729 2.61 1,736,258 1.94 0.2144
2021-11-15 2021-09-30 13F ISHARES TR CORE US AGGBD ET 464287226 14,832,920 298,066 2.05 1,703,265 1.61 0.2294
2021-08-23 2021-06-30 13F/A-1 ISHARES TR CORE US AGGBD ET 464287226 14,534,854 1,337,520 10.13 1,676,305 11.59 0.2211
2021-08-16 2021-06-30 13F ISHARES TR CORE US AGGBD ET 464287226 14,534,854 1,337,520 1,676,305 0.0460
2021-05-17 2021-03-31 13F ISHARES TR CORE US AGGBD ET 464287226 13,197,334 -1,966,741 -12.97 1,502,252 -16.18 0.2207
2021-02-16 2020-12-31 13F ISHARES TR CORE US AGGBD ET 464287226 15,164,075 5,146,269 51.37 1,792,243 51.54 0.2768
2020-11-13 2020-09-30 13F ISHARES TR CORE US AGGBD ET 464287226 10,017,806 724,741 7.80 1,182,701 7.66 0.2288
2020-08-14 2020-06-30 13F ISHARES TR CORE US AGGBD ET 464287226 9,293,065 1,507,290 19.36 1,098,533 22.30 0.2432
2020-05-26 2020-03-31 13F/A-1 ISHARES TR CORE US AGGBD ET 464287226 7,785,775 2,145,532 38.04 898,245 41.73 0.2441
2020-05-15 2020-03-31 13F ISHARES TR CORE US AGGBD ET 464287226 7,785,775 2,145,532 898,245 69,003.9412
2020-02-14 2019-12-31 13F ISHARES TR CORE US AGGBD ET 464287226 5,640,243 156,820 2.86 633,794 2.13 0.1474
2019-11-14 2019-09-30 13F ISHARES TR CORE US AGGBD ET 464287226 5,483,423 -91,858 -1.65 620,559 -0.04 0.1643
2019-08-14 2019-06-30 13F ISHARES TR CORE US AGGBD ET 464287226 5,575,281 725,663 14.96 620,808 17.37 0.1652
2019-05-15 2019-03-31 13F ISHARES TR CORE US AGGBD ET 464287226 4,849,618 198,474 4.27 528,948 6.79 0.1497
2019-02-14 2018-12-31 13F ISHARES TR CORE US AGGBD ET 464287226 4,651,144 284,904 6.53 495,300 7.50 0.1482
2019-04-23 2018-09-30 13F/A-2 ISHARES TR CORE US AGGBD ET 464287226 4,366,240 360,462 9.00 460,726 8.18 0.1153
2018-11-20 2018-09-30 13F/A-1 ISHARES TR CORE US AGGBD ET 464287226 4,366,240 0 460,726 0.1153
2018-11-14 2018-09-30 13F ISHARES TR CORE US AGGBD ET 464287226 4,366,240 360,462 460,726
2019-04-23 2018-06-30 13F/A-1 ISHARES TR CORE US AGGBD ET 464287226 4,005,778 -103,934 -2.53 425,895 -3.37 0.1151
2018-08-14 2018-06-30 13F ISHARES TR CORE US AGGBD ET 464287226 4,005,778 -103,934 425,895
2019-04-23 2018-03-31 13F/A-1 ISHARES TR CORE US AGGBD ET 464287226 4,109,712 106,418 2.66 440,767 0.71 0.1223
2018-05-14 2018-03-31 13F ISHARES TR CORE US AGGBD ET 464287226 4,109,712 106,418 440,767
2019-04-23 2017-12-31 13F/A-1 ISHARES TR CORE US AGGBD ET 464287226 4,003,294 -84,061 -2.06 437,680 -2.29 0.1198
2018-02-14 2017-12-31 13F ISHARES TR CORE US AGGBD ET 464287226 4,003,294 -84,061 437,680
2017-11-14 2017-09-30 13F ISHARES TR CORE US AGGBD ET 464287226 4,087,355 95,393 2.39 447,934 2.46 0.1342
2017-08-11 2017-06-30 13F ISHARES TR CORE US AGGBD ET 464287226 3,991,962 -565,010 -12.40 437,159 -11.58 0.1321
2017-05-22 2017-03-31 13F/A-1 ISHARES TR CORE US AGGBD ET 464287226 4,556,972 -210,188 -4.41 494,385 -4.03 0.1519
2017-05-12 2017-03-31 13F ISHARES TR CORE US AGGBD ET 464287226 4,556,972 494,385
2017-02-22 2016-12-31 13F/A-1 ISHARES TR CORE US AGGBD ET 464287226 4,767,160 -916,695 -16.13 515,138 -19.38 0.1686
2017-02-13 2016-12-31 13F ISHARES TR CORE US AGGBD ET 464287226 4,767,160 515,138
2016-11-10 2016-09-30 13F ISHARES TR CORE US AGGBD ET 464287226 5,683,855 -87,389 -1.51 638,980 -1.68 0.2182
2016-08-12 2016-06-30 13F ISHARES TR CORE US AGGBD ET 464287226 5,771,244 739,400 14.69 649,928 16.55 0.2348
2016-05-12 2016-03-31 13F ISHARES TR CORE US AGGBD ET 464287226 5,031,844 1,229,886 32.35 557,653 35.80 0.2146
2016-02-09 2015-12-31 13F ISHARES TR CORE US AGGBD ET 464287226 3,801,958 166,389 4.58 410,647 3.08 0.1486
2016-02-08 2015-09-30 13F/A-1 ISHARES TR CORE US AGGBD ET 464287226 3,635,569 553,046 17.94 398,386 18.81 0.1472
2015-11-09 2015-09-30 13F ISHARES TR CORE US AGGBD ET 464287226 3,635,569 398,386
2015-08-12 2015-06-30 13F ISHARES TR CORE US AGGBD ET 464287226 3,082,523 -985,005 -24.22 335,316 -26.02 0.1162
2015-05-14 2015-03-31 13F ISHARES TR CORE US AGGBD ET 464287226 4,067,528 -55,186 -1.34 453,244 -0.16 0.1669
2015-02-13 2014-12-31 13F ISHARES TR CORE US AGGBD ET 464287226 4,122,714 1,374,350 50.01 453,993 51.39 0.1660
2014-12-16 2014-09-30 13F/A-1 ISHARES TR CORE US AGGBD ET 464287226 2,748,364 489,680 21.68 299,874 23.03 0.1153
2014-11-14 2014-09-30 13F ISHARES TR CORE US AGGBD ET 464287226 2,748,364 299,874
2014-05-13 2014-03-31 13F ISHARES CORE TOTUSBD ETF 464287226 2,258,684 155,463 7.39 243,734 8.89 0.1021
2014-02-13 2013-12-31 13F ISHARES CORE TOTUSBD ETF 464287226 2,103,221 11,794 0.56 223,845 -0.16 0.0952
2013-11-13 2013-09-30 13F ISHARES BARCLAYS AGGREGA COM 464287226 2,091,427 -352,820 -14.43 224,201 -14.44 0.1060
2013-08-08 2013-06-30 13F ISHARES BARCLAYS AGGREGA COM 464287226 2,444,247 2,444,247 262,049 0.1322
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.