Citadel Advisors
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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
-16,000
Closed -$781K – 13358
2025
Q3 		$781K Buy
+16,000
New +$778K ﹤0.01% 8079
2025
Q2 		– Sell
-100
Closed -$4.83K – 13781
2025
Q1 		$4.83K Buy
+100
New +$4.8K ﹤0.01% 13861
2024
Q3 		– Sell
-100
Closed -$4.74K – 14725
2024
Q2 		$4.74K Sell
100
-1,900
-95% -$89.6K ﹤0.01% 13460
2024
Q1 		$94.9K Sell
2,000
-1,200
-38% -$56.9K ﹤0.01% 11432
2023
Q4 		$152K Buy
+3,200
New +$149K ﹤0.01% 10356

Other funds holding ISTB

AA
Acorns Advisers Irvine, California $13.5B AUM 15.15% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
State of Wisconsin Investment Board
State of Wisconsin Investment Board Madison, Wisconsin $43.7B AUM 27.76% 1-Year Est. Return
Charles Schwab
Charles Schwab San Francisco, California $654B AUM 26.35% 1-Year Est. Return
Raymond James Financial
Raymond James Financial St Petersburg, Florida $324B AUM 22.36% 1-Year Est. Return
Jones Financial Companies
Jones Financial Companies Des Peres, Missouri $208B AUM 16.12% 1-Year Est. Return
ST
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
Mariner Overland Park, Kansas $85.7B AUM 24.21% 1-Year Est. Return
TA
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.