Marshall Wace
MRX

Marshall Wace’s Marex Group Limited Ordinary Shares MRX Stock Holding History

Marshall Wace’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 		$5.59M Buy
125,494
+11,077
+10% +$437K 0.01% 1248
2025
Q4 		$4.39M Sell
114,417
-542,163
-83% -$18.4M ﹤0.01% 1211
2025
Q3 		$22.1M Sell
656,580
-603,725
-48% -$21.8M 0.02% 611
2025
Q2 		$49.7M Buy
1,260,305
+916,209
+266% +$38.1M 0.06% 294
2025
Q1 		$12.2M Sell
344,096
-144,484
-30% -$5.03M 0.02% 697
2024
Q4 		$15.2M Buy
488,580
+86,694
+22% +$2.43M 0.02% 638
2024
Q3 		$9.49M Buy
401,886
+58,379
+17% +$1.3M 0.01% 778
2024
Q2 		$6.87M Buy
+343,507
New +$6.75M 0.01% 875

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

Marshall Wace's MRX Position: Q1 2026 in Review

Marshall Wace increased its Marex Group Limited Ordinary Shares (MRX) stake by 9.7% in Q1 2026, buying an estimated $437K and bringing the position to 125,494 shares worth $5.59M. The position accounts for 0.01% of the portfolio, ranked #1248.

Marshall Wace first reported a position in MRX in Q2 2024 and has held it in 8 quarters since. The position peaked at $49.7M in Q2 2025. 205 funds tracked by Wall St. Rank hold MRX as of Q1 2026.

  • Marshall Wace held 125,494 shares of Marex Group Limited Ordinary Shares worth $5.59M as of Q1 2026.
  • Marshall Wace bought 11,077 Marex Group Limited Ordinary Shares shares in Q1 2026, an estimated $437K.
  • Marex Group Limited Ordinary Shares made up 0.01% of Marshall Wace's portfolio in Q1 2026, its #1248 holding.
  • Marshall Wace first reported a position in Marex Group Limited Ordinary Shares in Q2 2024 and has held it in 8 quarters since.
  • Marshall Wace's Marex Group Limited Ordinary Shares position peaked at $49.7M in Q2 2025.
  • 205 funds tracked by Wall St. Rank held Marex Group Limited Ordinary Shares as of Q1 2026.

Based on Marshall Wace's 13F filing for Q1 2026, filed 15 May 2026.