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

SecurityAGG / iShares Trust - iShares Core U.S. Aggregate Bond ETF
InstitutionCitigroup Inc
Latest Disclosed Ownership3,697,706 shares
Latest Disclosed Value $ 367,071,226
Citigroup Inc ownership in AGG / iShares Trust - iShares Core U.S. Aggregate Bond ETF

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 3,697,706 shares of iShares Trust - iShares Core U.S. Aggregate Bond ETF (US:AGG) valued at $367,071,275 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 3,783,170 shares of iShares Trust - iShares Core U.S. Aggregate Bond ETF. This represents a change in shares of -2.26% during the quarter. The current value of the position is $364,224,041 USD.

Citigroup Inc has a history of taking positions in derivatives of the underlying security (AGG) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

AGG / iShares Trust - iShares Core U.S. Aggregate Bond ETF Historical Put/Call Ratio
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)
2026-05-11 2026-03-31 13F ISHARES TR CORE US AGGBD ET 464287226 3,697,706 -85,464 -2.26 367,071 -2.86 0.0788
2026-02-13 2025-12-31 13F ISHARES TR CORE US AGGBD ET 464287226 3,783,170 248,864 7.04 377,863 6.65 0.1668
2025-11-10 2025-09-30 13F ISHARES TR CORE US AGGBD ET 464287226 3,534,306 -15,158 -0.43 354,314 0.63 0.1580
2025-08-11 2025-06-30 13F ISHARES TR CORE US AGGBD ET 464287226 3,549,464 97,364 2.82 352,107 3.11 0.1729
2025-05-12 2025-03-31 13F ISHARES TR CORE US AGGBD ET 464287226 3,452,100 -164,208 -4.54 341,482 -2.55 0.1745
2025-02-12 2024-12-31 13F ISHARES TR CORE US AGGBD ET 464287226 3,616,308 -674,465 -15.72 350,420 -19.36 0.2079
2024-11-12 2024-09-30 13F ISHARES TR CORE US AGGBD ET 464287226 4,290,773 1,073,181 33.35 434,527 39.12 0.2517
2024-08-12 2024-06-30 13F ISHARES TR CORE US AGGBD ET 464287226 3,217,592 60,144 1.90 312,332 1.00 0.2001
2024-05-10 2024-03-31 13F ISHARES TR CORE US AGGBD ET 464287226 3,157,448 270,846 9.38 309,241 7.94 0.2031
2024-02-09 2023-12-31 13F ISHARES TR CORE US AGGBD ET 464287226 2,886,602 106,134 3.82 286,495 9.57 0.2019
2023-12-06 2023-09-30 13F/A-1 ISHARES TR CORE US AGGBD ET 464287226 2,780,468 139,432 5.28 261,475 1.08 0.1955
2023-11-09 2023-09-30 13F ISHARES TR CORE US AGGBD ET 464287226 2,780,468 139,432 261,475 0.0781
2023-08-10 2023-06-30 13F ISHARES TR CORE US AGGBD ET 464287226 2,641,036 3,533 0.13 258,689 -1.56 0.1696
2023-05-11 2023-03-31 13F ISHARES TR CORE US AGGBD ET 464287226 2,637,503 286,832 12.20 262,801 15.27 0.1842
2023-02-09 2022-12-31 13F ISHARES TR CORE US AGGBD ET 464287226 2,350,671 209,023 9.76 227,992 10.50 0.1815
2022-11-10 2022-09-30 13F ISHARES TR CORE US AGGBD ET 464287226 2,141,648 243,945 12.85 206,326 6.93 0.1477
2022-08-10 2022-06-30 13F ISHARES TR CORE US AGGBD ET 464287226 1,897,703 591,353 45.27 192,958 37.92 0.1436
2022-05-12 2022-03-31 13F ISHARES TR CORE US AGGBD ET 464287226 1,306,350 -90,139 -6.45 139,909 -12.18 0.0850
2022-02-10 2021-12-31 13F ISHARES TR CORE US AGGBD ET 464287226 1,396,489 219,751 18.67 159,312 17.90 0.0853
2021-11-10 2021-09-30 13F ISHARES TR CORE US AGGBD ET 464287226 1,176,738 -52,072 -4.24 135,125 -4.65 0.0798
2021-08-10 2021-06-30 13F ISHARES TR CORE US AGGBD ET 464287226 1,228,810 794,141 182.70 141,719 186.43 0.0853
2021-05-13 2021-03-31 13F ISHARES TR CORE US AGGBD ET 464287226 434,669 -22,363 -4.89 49,478 -8.40 0.0320
2021-02-11 2020-12-31 13F ISHARES TR CORE US AGGBD ET 464287226 457,032 -1,199 -0.26 54,016 -0.15 0.0319
2020-11-12 2020-09-30 13F ISHARES TR CORE US AGGBD ET 464287226 458,231 67,945 17.41 54,098 17.26 0.0353
2020-08-12 2020-06-30 13F ISHARES TR CORE US AGGBD ET 464287226 390,286 -731,742 -65.22 46,136 -64.36 0.0360
2020-05-12 2020-03-31 13F ISHARES TR CORE US AGGBD ET 464287226 1,122,028 -3,281,931 -74.52 129,449 -73.84 0.1170
2020-02-12 2019-12-31 13F ISHARES TR CORE US AGGBD ET 464287226 4,403,959 4,163,701 1,733.01 494,874 1,720.06 0.3583
2019-11-08 2019-09-30 13F ISHARES TR CORE US AGGBD ET 464287226 240,258 -382,397 -61.41 27,190 -60.78 0.0216
2019-08-12 2019-06-30 13F ISHARES TR CORE US AGGBD ET 464287226 622,655 5,153 0.83 69,332 2.94 0.0560
2019-05-13 2019-03-31 13F ISHARES TR CORE US AGGBD ET 464287226 617,502 1,241 0.20 67,351 2.63 0.0649
2019-02-12 2018-12-31 13F ISHARES TR CORE US AGGBD ET 464287226 616,261 18,479 3.09 65,625 4.04 0.0665
2018-11-13 2018-09-30 13F ISHARES TR CORE US AGGBD ET 464287226 597,782 188,107 45.92 63,079 44.82 0.0563
2018-08-10 2018-06-30 13F ISHARES TR CORE US AGGBD ET 464287226 409,675 -26,917 -6.17 43,556 -6.98 0.0400
2018-05-11 2018-03-31 13F ISHARES TR CORE US AGGBD ET 464287226 436,592 1,182 0.27 46,824 -1.64 0.0386
2018-02-12 2017-12-31 13F ISHARES TR CORE US AGGBD ET 464287226 435,410 36,086 9.04 47,603 8.78 0.0382
2017-11-13 2017-09-30 13F ISHARES TR CORE US AGGBD ET 464287226 399,324 48,573 13.85 43,762 13.93 0.0358
2017-08-11 2017-06-30 13F ISHARES TR CORE US AGGBD ET 464287226 350,751 -590,178 -62.72 38,411 -62.37 0.0346
2017-05-12 2017-03-31 13F ISHARES TR CORE US AGGBD ET 464287226 940,929 -112,770 -10.70 102,080 -10.35 0.0910
2017-02-10 2016-12-31 13F ISHARES TR CORE US AGGBD ET 464287226 1,053,699 124,586 13.41 113,863 9.01 0.1026
2016-11-10 2016-09-30 13F ISHARES TR CORE US AGGBD ET 464287226 929,113 126,755 15.80 104,450 15.64 0.0976
2016-08-12 2016-06-30 13F ISHARES TR CORE US AGGBD ET 464287226 802,358 -3,091 -0.38 90,322 1.17 0.0922
2016-05-13 2016-03-31 13F ISHARES TR CORE US AGGBD ET 464287226 805,449 12,740 1.61 89,276 4.27 0.1003
2016-02-12 2015-12-31 13F ISHARES TR CORE US AGGBD ET 464287226 792,709 -17,790 -2.19 85,620 -3.60 0.0853
2015-11-13 2015-09-30 13F ISHARES TR CORE US AGGBD ET 464287226 810,499 222,446 37.83 88,814 38.84 0.0831
2015-08-13 2015-06-30 13F ISHARES TR CORE US AGGBD ET 464287226 588,053 435,305 284.98 63,969 275.85 0.0568
2015-05-14 2015-03-31 13F ISHARES TR CORE US AGGBD ET 464287226 152,748 -40,462 -20.94 17,020 -20.00 0.0165
2015-02-17 2014-12-31 13F ISHARES TR CORE US AGGBD ET 464287226 193,210 -532,545 -73.38 21,276 -73.13 0.0190
2014-11-14 2014-09-30 13F ISHARES TR CORE US AGGBD ET 464287226 725,755 -2,060 -0.28 79,187 -0.55 0.0692
2014-08-14 2014-06-30 13F ISHARES CORE TOTUSBD ETF 464287226 727,815 -20,368 -2.72 79,622 -1.42 0.0764
2014-05-15 2014-03-31 13F ISHARES CORE TOTUSBD ETF 464287226 748,183 -69,867 -8.54 80,766 -7.23 0.0826
2014-02-14 2013-12-31 13F ISHARES CORE TOTUSBD ETF 464287226 818,050 -24,618 -2.92 87,065 -3.62 0.0788
2013-11-14 2013-09-30 13F ISHARES CORE TOTUSBD ETF 464287226 842,668 64,501 8.29 90,334 8.29 0.0846
2013-08-14 2013-06-30 13F ISHARES TR CORE TOTUSBD ETF 464287226 778,167 778,167 83,420 0.0821
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2015-08-13 2015-06-30 13F ISHARES TR CORE US AGGBD ET Call 0 -100.00 0 -100.00 n/a n/a n/a
2015-05-14 2015-03-31 13F ISHARES TR CORE US AGGBD ET Call 75,200 8,380 n/a n/a n/a
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.