Jim Simons’s Marex Group Limited Ordinary Shares MRX Stock Holding History

Jim Simons’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	$3.59M	Sell	80,520 -140,267	-64%	-$5.54M	0.01%	1555
2025 Q4	$8.47M	Sell	220,787 -294,100	-57%	-$10M	0.01%	1006
2025 Q3	$17.3M	Buy	514,887 +93,800	+22%	+$3.39M	0.02%	803
2025 Q2	$16.6M	Buy	421,087 +243,462	+137%	+$10.1M	0.02%	795
2025 Q1	$6.27M	Buy	177,625 +45,300	+34%	+$1.58M	0.01%	1285
2024 Q4	$4.12M	Sell	132,325 -9,275	-7%	-$260K	0.01%	1571
2024 Q3	$3.34M	Buy	+141,600	New	+$3.16M	0.01%	1700

Other funds holding MRX

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Capital International Investors Los Angeles, California $484B AUM 34.9% 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 $167B AUM 44.17% 1-Year Est. Return

William Blair Investment Management Chicago, Illinois $33.3B AUM 44.76% 1-Year Est. Return

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

Jim Simons's MRX Position: Q1 2026 in Review

Jim Simons reduced its Marex Group Limited Ordinary Shares (MRX) stake by 64% in Q1 2026, selling an estimated $5.54M and leaving 80,520 shares worth $3.59M. The position accounts for 0.01% of the portfolio, ranked #1555.

Jim Simons first reported a position in MRX in Q3 2024 and has held it in 7 quarters since. The position peaked at $17.3M in Q3 2025. 205 funds tracked by Wall St. Rank hold MRX as of Q1 2026.

Jim Simons held 80,520 shares of Marex Group Limited Ordinary Shares worth $3.59M as of Q1 2026.
Jim Simons sold 140,267 Marex Group Limited Ordinary Shares shares in Q1 2026, an estimated $5.54M.
Marex Group Limited Ordinary Shares made up 0.01% of Jim Simons's portfolio in Q1 2026, its #1555 holding.
Jim Simons first reported a position in Marex Group Limited Ordinary Shares in Q3 2024 and has held it in 7 quarters since.
Jim Simons's Marex Group Limited Ordinary Shares position peaked at $17.3M in Q3 2025.
205 funds tracked by Wall St. Rank held Marex Group Limited Ordinary Shares as of Q1 2026.

Based on Renaissance Technologies's 13F filing for Q1 2026, filed 14 May 2026.