Citadel Advisors’s State Street Prime Money Market ETF MMK Stock Holding History

Citadel Advisors’s Portfolio MMK Stock Details MMK Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$319K	Sell	3,180 -13,597	-81%	-$1.36M	﹤0.01%	10982
2026 Q1	$1.68M	Buy	+16,777	New	+$1.68M	﹤0.01%	6471

Citadel Advisors's MMK Position: Q2 2026 in Review

Citadel Advisors reduced its State Street Prime Money Market ETF (MMK) stake by 81% in Q2 2026, selling an estimated $1.36M and leaving 3,180 shares worth $319K. The position accounts for ﹤0.01% of the portfolio, ranked #10982.

Citadel Advisors first reported a position in MMK in Q1 2026 and has held it in 2 quarters since. The position peaked at $1.68M in Q1 2026. 1 fund tracked by Wall St. Rank holds MMK as of Q2 2026.

Citadel Advisors held 3,180 shares of State Street Prime Money Market ETF worth $319K as of Q2 2026.
Citadel Advisors sold 13,597 State Street Prime Money Market ETF shares in Q2 2026, an estimated $1.36M.
State Street Prime Money Market ETF made up ﹤0.01% of Citadel Advisors's portfolio in Q2 2026, its #10982 holding.
Citadel Advisors first reported a position in State Street Prime Money Market ETF in Q1 2026 and has held it in 2 quarters since.
Citadel Advisors's State Street Prime Money Market ETF position peaked at $1.68M in Q1 2026.
1 fund tracked by Wall St. Rank held State Street Prime Money Market ETF as of Q2 2026.

Based on Citadel Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.