Citadel Advisors’s iShares Core 1-5 Year USD Bond ETF ISTB Stock Holding History

Citadel Advisors’s Portfolio ISTB Stock Details ISTB Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2025 Q4	–	Sell	-13,100	Closed	-$640K	–	13357
2025 Q3	$640K	Buy	13,100 +7,900	+152%	+$384K	﹤0.01%	8536
2025 Q2	$253K	Buy	+5,200	New	+$251K	﹤0.01%	10188
2024 Q2	–	Sell	-500	Closed	-$23.7K	–	14840
2024 Q1	$23.7K	Hold	500	–	–	﹤0.01%	12887
2023 Q4	$23.8K	Buy	500 +200	+67%	+$9.34K	﹤0.01%	12474
2023 Q3	$13.9K	Hold	300	–	–	﹤0.01%	12902
2023 Q2	$14K	Sell	300 -200	-40%	-$9.4K	﹤0.01%	13017
2023 Q1	$23.6K	Buy	500 +200	+67%	+$9.36K	﹤0.01%	12934
2022 Q4	$13.9K	Buy	+300	New	+$13.9K	﹤0.01%	13415

Other funds holding ISTB

Acorns Advisers Irvine, California $13.5B AUM 15.15% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

State of Wisconsin Investment Board Madison, Wisconsin $43.7B AUM 27.76% 1-Year Est. Return

Charles Schwab San Francisco, California $654B AUM 26.35% 1-Year Est. Return

Raymond James Financial St Petersburg, Florida $324B AUM 22.36% 1-Year Est. Return

Jones Financial Companies Des Peres, Missouri $208B AUM 16.12% 1-Year Est. Return

Spinnaker Trust Portland, Maine $1.81B AUM 17.83% 1-Year Est. Return

SSWG

Seven Springs Wealth Group Brentwood, Tennessee $432M AUM 23% 1-Year Est. Return

Mariner Overland Park, Kansas $85.7B AUM 24.21% 1-Year Est. Return

Townsend & Associates Westminster, Colorado $1.17B AUM 20.72% 1-Year Est. Return

Citadel Advisors's ISTB Position: Q1 2026 in Review

Citadel Advisors increased its iShares Core 1-5 Year USD Bond ETF (ISTB) stake by 961% in Q1 2026, buying an estimated $18.2M and bringing the position to 413,258 shares worth $20M. The position accounts for ﹤0.01% of the portfolio, ranked #2344.

Citadel Advisors first reported a position in ISTB in Q3 2016 and has held it in 28 quarters since. The position peaked at $62.5M in Q2 2020. 394 funds tracked by Wall St. Rank hold ISTB as of Q1 2026.

Citadel Advisors held 413,258 shares of iShares Core 1-5 Year USD Bond ETF worth $20M as of Q1 2026.
Citadel Advisors bought 374,322 iShares Core 1-5 Year USD Bond ETF shares in Q1 2026, an estimated $18.2M.
iShares Core 1-5 Year USD Bond ETF made up ﹤0.01% of Citadel Advisors's portfolio in Q1 2026, its #2344 holding.
Citadel Advisors first reported a position in iShares Core 1-5 Year USD Bond ETF in Q3 2016 and has held it in 28 quarters since.
Citadel Advisors's iShares Core 1-5 Year USD Bond ETF position peaked at $62.5M in Q2 2020.
394 funds tracked by Wall St. Rank held iShares Core 1-5 Year USD Bond ETF as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.