Jim Simons
MRX

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
Q2 		$11M Buy
180,087
+99,567
+124% +$5.48M 0.02% 1013
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

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Capital International Investors
Capital International Investors Los Angeles, California $484B AUM 34.9% 1-Year Est. Return
AllianceBernstein
AllianceBernstein Nashville, Tennessee $302B AUM 26.44% 1-Year Est. Return
Wasatch Advisors
Wasatch Advisors Salt Lake City, Utah $13.5B AUM 16.58% 1-Year Est. Return
Loomis, Sayles & Company
Loomis, Sayles & Company Boston, Massachusetts $79.8B AUM 16.05% 1-Year Est. Return
Samlyn Capital
Samlyn Capital New York $6.14B AUM 42.05% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Ophir Asset Management
Ophir Asset Management Sydney, Australia $1.22B AUM 100.03% 1-Year Est. Return

Jim Simons's MRX Position: Q2 2026 in Review

Jim Simons increased its Marex Group Limited Ordinary Shares (MRX) stake by 124% in Q2 2026, buying an estimated $5.48M and bringing the position to 180,087 shares worth $11M. The position accounts for 0.02% of the portfolio, ranked #1013.

Jim Simons first reported a position in MRX in Q3 2024 and has held it in 8 quarters since. The position peaked at $17.3M in Q3 2025. 222 funds tracked by Wall St. Rank hold MRX as of Q2 2026.

  • Jim Simons held 180,087 shares of Marex Group Limited Ordinary Shares worth $11M as of Q2 2026.
  • Jim Simons bought 99,567 Marex Group Limited Ordinary Shares shares in Q2 2026, an estimated $5.48M.
  • Marex Group Limited Ordinary Shares made up 0.02% of Jim Simons's portfolio in Q2 2026, its #1013 holding.
  • Jim Simons first reported a position in Marex Group Limited Ordinary Shares in Q3 2024 and has held it in 8 quarters since.
  • Jim Simons's Marex Group Limited Ordinary Shares position peaked at $17.3M in Q3 2025.
  • 222 funds tracked by Wall St. Rank held Marex Group Limited Ordinary Shares as of Q2 2026.

Based on Renaissance Technologies's 13F filing for Q2 2026, filed 13 Aug 2026.