Citadel Advisors
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Citadel Advisors’s iShares Core Universal USD Bond ETF IUSB Stock Holding History

Citadel Advisors’s Portfolio IUSB Stock Details IUSB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$13.6M Buy
+293,817
New +$13.7M ﹤0.01% 2812
2025
Q4 		– Sell
-1,281,984
Closed -$59.9M – 13363
2025
Q3 		$59.9M Buy
+1,281,984
New +$59.3M 0.01% 1216
2025
Q2 		– Sell
-255,697
Closed -$11.8M – 13790
2025
Q1 		$11.8M Buy
+255,697
New +$11.7M ﹤0.01% 2644
2024
Q3 		– Sell
-69,369
Closed -$3.14M – 14732
2024
Q2 		$3.14M Buy
+69,369
New +$3.12M ﹤0.01% 4508
2023
Q4 		– Sell
-105,455
Closed -$4.61M – 14775
2023
Q3 		$4.61M Buy
105,455
+72,383
+219% +$3.24M ﹤0.01% 3786
2023
Q2 		$1.5M Buy
+33,072
New +$1.51M ﹤0.01% 5679
2022
Q3 		– Sell
-19,344
Closed -$906K – 13101
2022
Q2 		$906K Sell
19,344
-303,049
-94% -$14.4M ﹤0.01% 7238
2022
Q1 		$16M Buy
+322,393
New +$16.4M ﹤0.01% 2267
2019
Q3 		– Sell
-478,924
Closed -$24.8M – 9470
2019
Q2 		$24.8M Buy
478,924
+453,073
+1,753% +$23M 0.01% 1229
2019
Q1 		$1.31M Sell
25,851
-223,176
-90% -$11.1M ﹤0.01% 5133
2018
Q4 		$12.3M Buy
249,027
+222,431
+836% +$10.8M 0.01% 1681
2018
Q3 		$1.31M Buy
+26,596
New +$1.31M ﹤0.01% 5085
2018
Q2 		– Sell
-112,258
Closed -$5.6M – 9049
2018
Q1 		$5.6M Buy
+112,258
New +$5.62M ﹤0.01% 2351
2017
Q2 		– Sell
-26,325
Closed -$1.33M – 7772
2017
Q1 		$1.33M Buy
26,325
+20,607
+360% +$1.04M ﹤0.01% 3582
2016
Q4 		$287K Buy
+5,718
New +$291K ﹤0.01% 5742
2016
Q3 		– Sell
-24,148
Closed -$1.26M – 7464
2016
Q2 		$1.26M Buy
+24,148
New +$1.24M ﹤0.01% 3287
2015
Q3 		– Sell
-5,016
Closed -$252K – 9055
2015
Q2 		$252K Sell
5,016
-2,156
-30% -$109K ﹤0.01% 6001
2015
Q1 		$368K Buy
+7,172
New +$365K ﹤0.01% 5368

Other funds holding IUSB

Envestnet Asset Management
Envestnet Asset Management Chicago, Illinois $374B AUM 17.66% 1-Year Est. Return
Jones Financial Companies
Jones Financial Companies Des Peres, Missouri $208B AUM 16.12% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Wells Fargo
Wells Fargo San Francisco, California $530B AUM 22.01% 1-Year Est. Return
LPL Financial
LPL Financial San Diego, California $377B AUM 19.32% 1-Year Est. Return
Northwestern Mutual Wealth Management
Northwestern Mutual Wealth Management Milwaukee, Wisconsin $162B AUM 16.35% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Mariner
Mariner Overland Park, Kansas $85.7B AUM 24.21% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
Carson Wealth (CWM LLC)
Carson Wealth (CWM LLC) Omaha, Nebraska $38.1B AUM 19.66% 1-Year Est. Return

Citadel Advisors's IUSB Position: Q1 2026 in Review

Citadel Advisors opened a new position in iShares Core Universal USD Bond ETF (IUSB) in Q1 2026: 293,817 shares worth $13.6M. The stake represents ﹤0.01% of the portfolio and ranks #2812 among its holdings. This is a return to the name: Citadel Advisors previously reported a position in IUSB as recently as Q3 2025.

Citadel Advisors first reported a position in IUSB in Q1 2015 and has held it in 18 quarters since. The position peaked at $59.9M in Q3 2025. 837 funds tracked by Wall St. Rank hold IUSB as of Q1 2026.

  • Citadel Advisors held 293,817 shares of iShares Core Universal USD Bond ETF worth $13.6M as of Q1 2026.
  • iShares Core Universal USD Bond ETF was a new Citadel Advisors position in Q1 2026.
  • iShares Core Universal USD Bond ETF made up ﹤0.01% of Citadel Advisors's portfolio in Q1 2026, its #2812 holding.
  • Citadel Advisors first reported a position in iShares Core Universal USD Bond ETF in Q1 2015 and has held it in 18 quarters since.
  • Citadel Advisors's iShares Core Universal USD Bond ETF position peaked at $59.9M in Q3 2025.
  • 837 funds tracked by Wall St. Rank held iShares Core Universal USD Bond ETF as of Q1 2026.

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