Mariner
MRX

Mariner’s Marex Group Limited Ordinary Shares MRX Stock Holding History

Mariner’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 		$2.59M Sell
58,198
-3,990
-6% -$158K ﹤0.01% 1391
2025
Q4 		$2.39M Buy
62,188
+39,572
+175% +$1.35M ﹤0.01% 1397
2025
Q3 		$760K Buy
+22,616
New +$817K ﹤0.01% 2102

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

Mariner's MRX Position: Q1 2026 in Review

Mariner reduced its Marex Group Limited Ordinary Shares (MRX) stake by 6.4% in Q1 2026, selling an estimated $158K and leaving 58,198 shares worth $2.59M. The position accounts for ﹤0.01% of the portfolio, ranked #1391.

Mariner first reported a position in MRX in Q3 2025 and has held it in 3 quarters since. 205 funds tracked by Wall St. Rank hold MRX as of Q1 2026.

  • Mariner held 58,198 shares of Marex Group Limited Ordinary Shares worth $2.59M as of Q1 2026.
  • Mariner sold 3,990 Marex Group Limited Ordinary Shares shares in Q1 2026, an estimated $158K.
  • Marex Group Limited Ordinary Shares made up ﹤0.01% of Mariner's portfolio in Q1 2026, its #1391 holding.
  • Mariner first reported a position in Marex Group Limited Ordinary Shares in Q3 2025 and has held it in 3 quarters since.
  • 205 funds tracked by Wall St. Rank held Marex Group Limited Ordinary Shares as of Q1 2026.

Based on Mariner's 13F filing for Q1 2026, filed 13 May 2026.