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

SecurityAGG / iShares Trust - iShares Core U.S. Aggregate Bond ETF
InstitutionAssetmark, Inc
Latest Disclosed Ownership590,558 shares
Latest Disclosed Value $ 58,624,693
Assetmark, Inc reports 53.35% decrease in ownership of AGG / iShares Trust - iShares Core U.S. Aggregate Bond ETF

On May 6, 2026 - Assetmark, Inc filed a 13F-HR form disclosing ownership of 590,558 shares of iShares Trust - iShares Core U.S. Aggregate Bond ETF (US:AGG) valued at $58,624,693 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 1,265,868 shares of iShares Trust - iShares Core U.S. Aggregate Bond ETF. This represents a change in shares of -53.35% during the quarter. The current value of the position is $58,169,963 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)
2026-05-06 2026-03-31 13F ISHARES TR CORE US AGGBD ET 464287226 590,558 -675,310 -53.35 58,625 -53.63 0.1195
2026-01-23 2025-12-31 13F ISHARES TR CORE US AGGBD ET 464287226 1,265,868 792,800 167.59 126,435 166.60 0.2578
2025-11-06 2025-09-30 13F ISHARES TR CORE US AGGBD ET 464287226 473,068 140,937 42.43 47,425 43.94 0.1017
2025-08-04 2025-06-30 13F ISHARES TR CORE US AGGBD ET 464287226 332,131 -347,381 -51.12 32,947 -50.98 0.0778
2025-05-06 2025-03-31 13F ISHARES TR CORE US AGGBD ET 464287226 679,512 -358,471 -34.54 67,217 -33.17 0.1846
2025-02-06 2024-12-31 13F ISHARES TR CORE US AGGBD ET 464287226 1,037,983 -72,002 -6.49 100,581 -10.52 0.2732
2024-11-01 2024-09-30 13F ISHARES TR CORE US AGGBD ET 464287226 1,109,985 14,659 1.34 112,408 5.72 0.3219
2024-08-13 2024-06-30 13F ISHARES TR CORE US AGGBD ET 464287226 1,095,326 32,068 3.02 106,323 2.10 0.3288
2024-05-07 2024-03-31 13F ISHARES TR CORE US AGGBD ET 464287226 1,063,258 -165,862 -13.49 104,136 -14.64 0.3385
2024-02-09 2023-12-31 13F ISHARES TR CORE US AGGBD ET 464287226 1,229,120 255,776 26.28 121,990 33.27 0.4408
2023-10-27 2023-09-30 13F ISHARES TR CORE US AGGBD ET 464287226 973,344 -230,025 -19.12 91,533 -22.34 0.3660
2023-08-11 2023-06-30 13F ISHARES TR CORE US AGGBD ET CORE US AGGBD ET 464287226 1,203,369 44,136 3.81 117,870 2.05 0.4624
2023-05-05 2023-03-31 13F ISHARES TR CORE US AGGBD ET CORE US AGGBD ET 464287226 1,159,233 595,212 105.53 115,506 111.15 0.4775
2023-02-10 2022-12-31 13F ISHARES TR CORE US AGGBD ET 464287226 564,021 -565,811 -50.08 54,704 -49.74 0.2371
2022-11-01 2022-09-30 13F ISHARES TR CORE US AGGBD ET 464287226 1,129,832 -795,504 -41.32 108,848 -44.40 0.5090
2022-08-03 2022-06-30 13F ISHARES TR CORE US AGGBD ET CORE US AGGBD ET 464287226 1,925,336 50,189 2.68 195,768 -2.52 0.8776
2022-05-13 2022-03-31 13F ISHARES TR CORE US AGGBD ET CORE US AGGBD ET 464287226 1,875,147 733,932 64.31 200,828 54.26 0.8405
2022-02-14 2021-12-31 13F ISHARES TR CORE US AGGBD ET CORE US AGGBD ET 464287226 1,141,215 77,146 7.25 130,190 6.55 0.5349
2021-11-12 2021-09-30 13F ISHARES TR CORE US AGGBD ET ETF 464287226 1,064,069 731,384 219.84 122,187 218.45 0.5474
2021-08-16 2021-06-30 13F ISHARES TR CORE US AGGBD ET ETF 464287226 332,685 -1,312,499 -79.78 38,369 -79.51 0.1779
2021-05-14 2021-03-31 13F ISHARES TR ETF 464287226 1,645,184 1,388,841 541.79 187,271 518.12 0.9658
2021-02-10 2020-12-31 13F ISHARES TR CORE US AGGBD ET ETF 464287226 256,343 13,870 5.72 30,297 5.84 0.1688
2020-11-13 2020-09-30 13F ISHARES TR CORE US AGGBD ET ETF 464287226 242,473 74,741 44.56 28,626 44.37 0.1847
2020-08-11 2020-06-30 13F ISHARES TR CORE US AGGBD ET ETF 464287226 167,732 -371,618 -68.90 19,828 -68.13 0.1418
2020-05-12 2020-03-31 13F ISHARES TR CORE US AGGBD ET ETF 464287226 539,350 403,461 296.90 62,225 307.50 0.5269
2020-02-11 2019-12-31 13F ISHARES TR CORE US AGGBD ET ETF 464287226 135,889 5,412 4.15 15,270 3.41 0.1160
2019-11-13 2019-09-30 13F ISHARES TR CORE US AGGBD ET ETF 464287226 130,477 -631,997 -82.89 14,766 -82.61 0.1236
2019-08-14 2019-06-30 13F ISHARES TR CORE US AGGBD ET ETF 464287226 762,474 275,724 56.65 84,902 59.92 0.6921
2019-05-14 2019-03-31 13F ISHARES TR CORE US AGGBD ET ETF 464287226 486,750 -14,523 -2.90 53,090 -0.54 0.4796
2019-02-13 2018-12-31 13F ISHARES TR CORE US AGGBD ET ETF 464287226 501,273 444,463 782.37 53,380 790.41 0.5153
2018-11-13 2018-09-30 13F ISHARES TR CORE US AGGBD ET ETF 464287226 56,810 1,522 2.75 5,995 1.99 0.0545
2018-08-01 2018-06-30 13F ISHARES TR CORE US AGGBD ET ETF 464287226 55,288 403 0.73 5,878 -0.14 0.0577
2018-05-16 2018-03-31 13F ISHARES TR CORE US AGGBD ET ETF 464287226 54,885 -431,808 -88.72 5,886 -88.94 0.0609
2018-02-13 2017-12-31 13F ISHARES TR CORE US AGGBD ET ETF 464287226 486,693 34,379 7.60 53,210 7.34 0.5483
2017-11-08 2017-09-30 13F ISHARES TR CORE US AGGBD ET ETF 464287226 452,314 23,549 5.49 49,571 5.57 0.5637
2017-08-14 2017-06-30 13F ISHARES TR CORE US AGGBD ET ETF 464287226 428,765 4,310 1.02 46,956 1.97 0.5908
2017-09-15 2017-03-31 13F/A-1 ISHARES TR CORE US AGGBD ET ETF 464287226 424,455 -5,368 -1.25 46,048 -0.86 0.6049
2017-05-08 2017-03-31 13F ISHARES TR CORE US AGGBD ET ETF 464287226 424,455 -5,368 46,048
2017-09-15 2016-12-31 13F/A-1 ISHARES TR CORE US AGGBD ET ETF 464287226 429,823 23,248 5.72 46,447 1.62 0.6823
2017-02-14 2016-12-31 13F ISHARES TR CORE US AGGBD ET ETF 464287226 429,823 23,248 46,447
2017-09-14 2016-09-30 13F/A-1 ISHARES TR CORE US AGGBD ET ETF 464287226 406,575 -175,614 -30.16 45,708 -30.28 0.6951
2016-11-04 2016-09-30 13F ISHARES TR CORE US AGGBD ET ETF 464287226 406,575 -175,614 45,708
2017-09-14 2016-06-30 13F/A-1 ISHARES TR CORE US AGGBD ET ETF 464287226 582,189 -735,007 -55.80 65,561 -55.09 1.1023
2016-08-08 2016-06-30 13F ISHARES TR CORE US AGGBD ET ETF 464287226 582,189 -735,007 65,561
2017-09-14 2016-03-31 13F/A-1 ISHARES TR CORE US AGGBD ET ETF 464287226 1,317,196 587,291 80.46 145,975 85.17 2.5481
2016-05-13 2016-03-31 13F ISHARES TR CORE US AGGBD ET ETF 464287226 1,317,196 587,291 145,975
2017-09-14 2015-12-31 13F/A-1 ISHARES TR CORE US AGGBD ET ETF 464287226 729,905 -8,060 -1.09 78,834 -2.51 1.4610
2016-02-12 2015-12-31 13F ISHARES TR CORE US AGGBD ET ETF 464287226 729,905 -8,060 78,834
2016-01-05 2015-09-30 13F/A-1 ISHARES TR CORE US AGGBD ET ETF 464287226 737,965 -185,951 -20.13 80,866 -19.54 1.6867
2015-11-10 2015-09-30 13F ISHARES TR CORE US AGGBD ET ETF 464287226 737,965 80,866
2015-08-13 2015-06-30 13F ISHARES TR CORE US AGGBD ET COM 464287226 923,916 174,305 23.25 100,504 20.32 2.0922
2015-05-12 2015-03-31 13F ISHARES TR CORE US AGGBD ET COM 464287226 749,611 749,611 0.00 83,528 1.7792
2015-02-03 2014-12-31 13F ISHARES TR CORE US AGGBD ET ETF 464287226 0 -64,234 -100.00 0 -100.00
2014-11-10 2014-09-30 13F ISHARES TR CORE US AGGBD ET ETF 464287226 64,234 45,610 244.90 7,009 244.08 0.1620
2014-08-12 2014-06-30 13F ISHARES CORE TOTUSBD ETF ETF 464287226 18,624 -4,607 -19.83 2,037 -18.75 0.0434
2014-05-06 2014-03-31 13F ISHARES CORE TOTUSBD ETF ETF 464287226 23,231 -33,422 -58.99 2,507 -58.42 0.0611
2014-02-11 2013-12-31 13F ISHARES CORE TOTUSBD ETF ETF 464287226 56,653 -92,641 -62.05 6,030 -62.32 0.1427
2014-02-11 2013-09-30 13F/A-1 ISHARES CORE TOTUSBD ETF ETF 464287226 149,294 149,294 16,004 0.4041
2013-11-14 2013-09-30 13F ISHARES CORE TOTUSBD ETF ETF 464287226 149,294 16,004 0.4041
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.