Citadel Advisors’s Roundhill Space & Technology ETF MARS Stock Holding History

Citadel Advisors’s Portfolio MARS Stock Details MARS Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$825K	Buy	+25,549	New	+$858K	﹤0.01%	8681

Other funds holding MARS

Susquehanna International Group Bala Cynwyd, Pennsylvania $1.28T AUM 58.89% 1-Year Est. Return

OMC

Old Mission Capital Chicago, Illinois $6.31B AUM 20.77% 1-Year Est. Return

Jane Street New York $1.21T AUM 78.12% 1-Year Est. Return

MOS

MGO One Seven Beachwood, Ohio $6.06B AUM 28.9% 1-Year Est. Return

Cambridge Investment Research Advisors Fairfield, Iowa $44.6B AUM 28.94% 1-Year Est. Return

PCM

Prelude Capital Management New York $1.37B AUM 71.69% 1-Year Est. Return

Simplex Trading Chicago, Illinois $171B AUM 85% 1-Year Est. Return

UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return

Group One Trading Chicago, Illinois $71.1B AUM 128.96% 1-Year Est. Return

Osaic Holdings Scottsdale, Arizona $85.1B AUM 27.35% 1-Year Est. Return

Citadel Advisors's MARS Position: Q2 2026 in Review

Citadel Advisors opened a new position in Roundhill Space & Technology ETF (MARS) in Q2 2026: 25,549 shares worth $825K. The stake represents ﹤0.01% of the portfolio and ranks #8681 among its holdings.

18 funds tracked by Wall St. Rank hold MARS as of Q2 2026.

Citadel Advisors held 25,549 shares of Roundhill Space & Technology ETF worth $825K as of Q2 2026.
Roundhill Space & Technology ETF was a new Citadel Advisors position in Q2 2026.
Roundhill Space & Technology ETF made up ﹤0.01% of Citadel Advisors's portfolio in Q2 2026, its #8681 holding.
18 funds tracked by Wall St. Rank held Roundhill Space & Technology ETF as of Q2 2026.

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