Simplex Trading
MRX

Simplex Trading’s Marex Group Limited Ordinary Shares MRX Stock Holding History

Simplex Trading’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 		$232K Buy
5,200
+100
+2% +$3.95K ﹤0.01% 4129
2025
Q4 		$196K Sell
5,100
-20,000
-80% -$680K ﹤0.01% 4256
2025
Q3 		$843K Buy
25,100
+16,400
+189% +$592K ﹤0.01% 3226
2025
Q2 		$343K Buy
8,700
+3,200
+58% +$133K ﹤0.01% 3912
2025
Q1 		$194K Buy
+5,500
New +$191K ﹤0.01% 4359
2024
Q4 		– Sell
-7,300
Closed -$172K – 9830
2024
Q3 		$172K Buy
7,300
+5,200
+248% +$116K ﹤0.01% 4675
2024
Q2 		$42K Buy
+2,100
New +$41.3K ﹤0.01% 6261

Other funds holding MRX

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Capital International Investors
Capital International Investors Los Angeles, California $427B AUM 29.17% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Loomis, Sayles & Company
Loomis, Sayles & Company Boston, Massachusetts $74.3B AUM 24.01% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
SC
Samlyn Capital New York $5.86B AUM 36.3% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return
Jennison Associates
Jennison Associates New York $145B AUM 34.61% 1-Year Est. Return
William Blair Investment Management
William Blair Investment Management Chicago, Illinois $30.3B AUM 33.75% 1-Year Est. Return
AllianceBernstein
AllianceBernstein Nashville, Tennessee $309B AUM 23.92% 1-Year Est. Return

Simplex Trading's MRX Position: Q3 2025 in Review

Simplex Trading sold out of Marex Group Limited Ordinary Shares (MRX) in Q3 2025, closing a stake of 3,888 shares — an estimated $140K sold.

Simplex Trading first reported a position in MRX in Q2 2024 and held it in 3 quarters. The position peaked at $153K in Q2 2025. 191 funds tracked by Wall St. Rank hold MRX as of Q3 2025.

  • Simplex Trading reported no remaining Marex Group Limited Ordinary Shares position as of Q3 2025 after selling out during the quarter.
  • Simplex Trading sold 3,888 Marex Group Limited Ordinary Shares shares in Q3 2025, an estimated $140K.
  • Simplex Trading first reported a position in Marex Group Limited Ordinary Shares in Q2 2024 and held it in 3 quarters.
  • Simplex Trading's Marex Group Limited Ordinary Shares position peaked at $153K in Q2 2025.
  • 191 funds tracked by Wall St. Rank held Marex Group Limited Ordinary Shares as of Q3 2025.

Based on Simplex Trading's 13F filing for Q3 2025, filed 12 Nov 2025.