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

SecurityAGG / iShares Trust - iShares Core U.S. Aggregate Bond ETF
InstitutionFlagship Harbor Advisors, Llc
Latest Disclosed Ownership375,840 shares
Latest Disclosed Value $ 37,309,636
Flagship Harbor Advisors, Llc reports 12.41% decrease in ownership of AGG / iShares Trust - iShares Core U.S. Aggregate Bond ETF

On April 28, 2026 - Flagship Harbor Advisors, Llc filed a 13F-HR form disclosing ownership of 375,840 shares of iShares Trust - iShares Core U.S. Aggregate Bond ETF (US:AGG) valued at $37,309,637 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 21, 2026 disclosing 429,099 shares of iShares Trust - iShares Core U.S. Aggregate Bond ETF. This represents a change in shares of -12.41% during the quarter. The current value of the position is $37,020,240 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)
2026-04-28 2026-03-31 13F ISHARES TR CORE US AGGBD ET 464287226 375,840 -53,259 -12.41 37,310 -12.95 1.6408
2026-01-21 2025-12-31 13F ISHARES CORE MF Closed and MF Open 464287226 429,099 24,190 5.97 42,858 5.58 2.0225
2025-11-05 2025-09-30 13F ISHARES TR CORE US AGGBD ET 464287226 404,909 31,644 8.48 40,592 9.63 1.7660
2025-08-04 2025-06-30 13F ISHARES TR CORE US AGGBD ET 464287226 373,265 34,146 10.07 37,028 10.38 1.7538
2025-04-22 2025-03-31 13F ISHARES TR CORE US AGGBD ET 464287226 339,119 10,345 3.15 33,546 5.30 1.7638
2025-01-21 2024-12-31 13F ISHARES TR CORE US AGGBD ET 464287226 328,774 34,081 11.56 31,858 6.75 1.6731
2024-10-21 2024-09-30 13F ISHARES TR CORE US AGGBD ET 464287226 294,693 66,377 29.07 29,844 34.66 1.6389
2025-12-02 2024-06-30 13F ISHARES TR CORE US AGGBD ET 464287226 228,316 55,507 32.12 22,163 30.95 1.3322
2024-04-16 2024-03-31 13F ISHARES TR CORE US AGGBD ET 464287226 172,809 95,084 122.33 16,925 119.39 1.0876
2024-01-10 2023-12-31 13F ISHARES TR CORE US AGGBD ET 464287226 77,725 -15,712 -16.82 7,714 -12.20 0.5610
2023-10-17 2023-09-30 13F ISHARES TR CORE US AGGBD ET 464287226 93,437 5,997 6.86 8,787 2.59 0.7308
2023-07-11 2023-06-30 13F ISHARES TR CORE US AGGBD ET 464287226 87,440 37,699 75.79 8,565 72.80 0.7074
2023-04-12 2023-03-31 13F ISHARES TR CORE US AGGBD ET 464287226 49,741 -484 -0.96 4,956 1.75 0.4668
2023-01-13 2022-12-31 13F ISHARES TR CORE US AGGBD ET 464287226 50,225 -2,724 -5.14 4,871 -4.51 0.4994
2022-10-13 2022-09-30 13F ISHARES TR CORE US AGGBD ET 464287226 52,949 -8,320 -13.58 5,101 -18.12 0.5916
2022-07-13 2022-06-30 13F ISHARES TR CORE US AGGBD ET 464287226 61,269 -130 -0.21 6,230 -5.26 0.6998
2022-04-13 2022-03-31 13F ISHARES TR CORE US AGGBD ET 464287226 61,399 36,754 149.13 6,576 133.94 0.6336
2022-02-17 2021-12-31 13F/A-1 ISHARES TR CORE US AGGBD ET 464287226 24,645 -2,704 -9.89 2,811 -10.88 0.2660
2022-02-10 2021-12-31 13F ISHARES TR CORE US AGGBD ET 464287226 24,645 -2,704 2,811 0.2660
2021-11-01 2021-09-30 13F ISHARES TR CORE US AGGBD ET 464287226 27,349 0 0.00 3,154 0.00 0.3389
2021-07-26 2021-06-30 13F ISHARES TR CORE US AGGBD ET 464287226 27,349 -7,492 -21.50 3,154 -20.47 0.3383
2021-05-03 2021-03-31 13F ISHARES TR CORE US AGGBD ET 464287226 34,841 -1,270 -3.52 3,966 -7.08 0.4503
2021-02-08 2020-12-31 13F ISHARES TR CORE US AGGBD ET 464287226 36,111 8,771 32.08 4,268 32.26 0.5292
2020-10-13 2020-09-30 13F ISHARES CORE MF Closed and MF Open 464287226 27,340 1,401 5.40 3,227 5.25 0.4357
2020-07-31 2020-06-30 13F ISHARES CORE MF Closed and MF Open 464287226 25,939 4,056 18.53 3,066 21.43 0.4501
2020-05-12 2020-03-31 13F ISHARES CORE MF Closed and MF Open 464287226 21,883 254 1.17 2,525 3.87 0.5050
2020-02-14 2019-12-31 13F ISHARES CORE MF Closed and MF Open 464287226 21,629 15,657 262.17 2,431 260.15 0.4257
2019-10-22 2019-09-30 13F ISHARES CORE MF Closed and MF Open 464287226 5,972 376 6.72 675 8.35 0.1323
2019-07-22 2019-06-30 13F ISHARES CORE MF Closed and MF Open 464287226 5,596 -368 -6.17 623 -4.15 0.1293
2019-04-15 2019-03-31 13F ISHARES CORE MF Closed and MF Open 464287226 5,964 100 1.71 650 4.17 0.1335
2019-01-26 2018-12-31 13F ISHARES CORE ETF 464287226 5,864 -5,897 -50.14 624 -49.60 0.1516
2018-11-05 2018-09-30 13F ISHARES CORE MF Closed and MF Open 464287226 11,761 -1,103 -8.57 1,238 -9.44 0.2296
2018-08-14 2018-06-30 13F ISHARES CORE ETF 464287226 12,864 3,769 41.44 1,367 41.22 0.2736
2018-04-23 2018-03-31 13F ISHARES TR CORE US AGGBD ET 464287226 9,095 -4,045 -30.78 968 -32.35 0.2878
2018-01-24 2017-12-31 13F ISHARES TR CORE US AGGBD ET 464287226 13,140 -429 -3.16 1,431 -3.44 0.4113
2017-10-23 2017-09-30 13F ISHARES TR CORE US AGGBD ET 464287226 13,569 398 3.02 1,482 3.20 0.4808
2017-08-09 2017-06-30 13F ISHARES TR CORE US AGGBD ET 464287226 13,171 1,362 11.53 1,436 11.75 0.4986
2017-05-16 2017-03-31 13F ISHARES TR CORE US AGGBD ET 464287226 11,809 -36 -0.30 1,285 0.39 0.4909
2017-05-15 2016-12-31 13F ISHARES TR CORE US AGGBD ET 464287226 11,845 11,845 1,280 0.5524
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.