Citadel Advisors’s Marex Group Limited Ordinary Shares MRX Stock Holding History

Citadel Advisors’s Portfolio MRX Stock Details MRX Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$334K	Sell	7,500 -1,400	-16%	-$55.3K	﹤0.01%	10227
2025 Q4	$341K	Sell	8,900 -2,000	-18%	-$68K	﹤0.01%	9857
2025 Q3	$366K	Sell	10,900 -3,900	-26%	-$141K	﹤0.01%	9875
2025 Q2	$584K	Buy	14,800 +10,500	+244%	+$437K	﹤0.01%	8285
2025 Q1	$152K	Sell	4,300 -3,300	-43%	-$115K	﹤0.01%	10857
2024 Q4	$237K	Buy	7,600 +4,100	+117%	+$115K	﹤0.01%	10138
2024 Q3	$82.7K	Buy	3,500 +3,200	+1,067%	+$71.4K	﹤0.01%	11371
2024 Q2	$6K	Buy	+300	New	+$5.9K	﹤0.01%	13368

Other funds holding MRX

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Capital International Investors Los Angeles, California $427B AUM 29.17% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Loomis, Sayles & Company Boston, Massachusetts $74.3B AUM 24.01% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return

Samlyn Capital New York $5.86B AUM 36.3% 1-Year Est. Return

Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return

Jennison Associates New York $145B AUM 34.61% 1-Year Est. Return

William Blair Investment Management Chicago, Illinois $30.3B AUM 33.75% 1-Year Est. Return

AllianceBernstein Nashville, Tennessee $309B AUM 23.92% 1-Year Est. Return

Citadel Advisors's MRX Position: Q1 2026 in Review

Citadel Advisors increased its Marex Group Limited Ordinary Shares (MRX) stake by 93% in Q1 2026, buying an estimated $3.29M and bringing the position to 173,474 shares worth $7.73M. The position accounts for ﹤0.01% of the portfolio, ranked #3632.

Citadel Advisors first reported a position in MRX in Q2 2024 and has held it in 8 quarters since. The position peaked at $38.7M in Q2 2025. 205 funds tracked by Wall St. Rank hold MRX as of Q1 2026.

Citadel Advisors held 173,474 shares of Marex Group Limited Ordinary Shares worth $7.73M as of Q1 2026.
Citadel Advisors bought 83,415 Marex Group Limited Ordinary Shares shares in Q1 2026, an estimated $3.29M.
Marex Group Limited Ordinary Shares made up ﹤0.01% of Citadel Advisors's portfolio in Q1 2026, its #3632 holding.
Citadel Advisors first reported a position in Marex Group Limited Ordinary Shares in Q2 2024 and has held it in 8 quarters since.
Citadel Advisors's Marex Group Limited Ordinary Shares position peaked at $38.7M in Q2 2025.
205 funds tracked by Wall St. Rank held Marex Group Limited Ordinary Shares as of Q1 2026.

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