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
Q2 		$4.55M Sell
74,677
-50,817
-40% -$2.8M ﹤0.01% 1428
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

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
WA
Wasatch Advisors Salt Lake City, Utah $15.3B AUM 25.06% 1-Year Est. Return
Loomis, Sayles & Company
Loomis, Sayles & Company Boston, Massachusetts $79.8B AUM 16.05% 1-Year Est. Return
SC
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
OAM
Ophir Asset Management Sydney, Australia $1.22B AUM 100.03% 1-Year Est. Return

Marshall Wace's MRX Position: Q2 2026 in Review

Marshall Wace reduced its Marex Group Limited Ordinary Shares (MRX) stake by 40% in Q2 2026, selling an estimated $2.8M and leaving 74,677 shares worth $4.55M. The position accounts for ﹤0.01% of the portfolio, ranked #1428.

Marshall Wace first reported a position in MRX in Q2 2024 and has held it in 9 quarters since. The position peaked at $49.7M in Q2 2025. 221 funds tracked by Wall St. Rank hold MRX as of Q2 2026.

  • Marshall Wace held 74,677 shares of Marex Group Limited Ordinary Shares worth $4.55M as of Q2 2026.
  • Marshall Wace sold 50,817 Marex Group Limited Ordinary Shares shares in Q2 2026, an estimated $2.8M.
  • Marex Group Limited Ordinary Shares made up ﹤0.01% of Marshall Wace's portfolio in Q2 2026, its #1428 holding.
  • Marshall Wace first reported a position in Marex Group Limited Ordinary Shares in Q2 2024 and has held it in 9 quarters since.
  • Marshall Wace's Marex Group Limited Ordinary Shares position peaked at $49.7M in Q2 2025.
  • 221 funds tracked by Wall St. Rank held Marex Group Limited Ordinary Shares as of Q2 2026.

Based on Marshall Wace's 13F filing for Q2 2026, filed 13 Aug 2026.