Citadel Advisors’s Roundhill Weekly T-Bill ETF WEEK Stock Holding History

Citadel Advisors’s Portfolio WEEK Stock Details WEEK Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$525K	Buy	5,252 +2,518	+92%	+$252K	﹤0.01%	9185
2025 Q4	$274K	Buy	2,734 +415	+18%	+$41.5K	﹤0.01%	10348
2025 Q3	$232K	Buy	+2,319	New	+$232K	﹤0.01%	10916

Other funds holding WEEK

ETC

Exchange Traded Concepts Oklahoma City, Oklahoma $14.1B AUM 25.71% 1-Year Est. Return

Jane Street New York $777B AUM 61.18% 1-Year Est. Return

Citadel Advisors's WEEK Position: Q1 2026 in Review

Citadel Advisors increased its Roundhill Weekly T-Bill ETF (WEEK) stake by 92% in Q1 2026, buying an estimated $252K and bringing the position to 5,252 shares worth $525K. The position accounts for ﹤0.01% of the portfolio, ranked #9185.

Citadel Advisors first reported a position in WEEK in Q3 2025 and has held it in 3 quarters since. 3 funds tracked by Wall St. Rank hold WEEK as of Q1 2026.

Citadel Advisors held 5,252 shares of Roundhill Weekly T-Bill ETF worth $525K as of Q1 2026.
Citadel Advisors bought 2,518 Roundhill Weekly T-Bill ETF shares in Q1 2026, an estimated $252K.
Roundhill Weekly T-Bill ETF made up ﹤0.01% of Citadel Advisors's portfolio in Q1 2026, its #9185 holding.
Citadel Advisors first reported a position in Roundhill Weekly T-Bill ETF in Q3 2025 and has held it in 3 quarters since.
3 funds tracked by Wall St. Rank held Roundhill Weekly T-Bill ETF as of Q1 2026.

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