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Prospector Partners’s MarketAxess Holdings MKTX Stock Holding History

Prospector Partners’s Portfolio MKTX Stock Details MKTX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-37,965
Closed -$6.62M – 54
2025
Q3 		$6.62M Buy
+37,965
New +$7.43M 0.79% 51

Other funds holding MKTX

Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $218B AUM 29.41% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
NRCM
North Reef Capital Management Laguna Beach, California $2.91B AUM 11.03% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
VanEck Associates
VanEck Associates New York $133B AUM 72.99% 1-Year Est. Return
GAM
GuardCap Asset Management London, United Kingdom $1.75B AUM 7.74% 1-Year Est. Return
Bank of Montreal
Bank of Montreal Toronto, Ontario, Canada $269B AUM 31.4% 1-Year Est. Return

Prospector Partners's MKTX Position: Q4 2025 in Review

Prospector Partners sold out of MarketAxess Holdings (MKTX) in Q4 2025, closing a stake of 37,965 shares — an estimated $6.62M sold.

Prospector Partners first reported a position in MKTX in Q3 2025 and held it in 1 quarter. The position peaked at $6.62M in Q3 2025. 485 funds tracked by Wall St. Rank hold MKTX as of Q4 2025.

  • Prospector Partners reported no remaining MarketAxess Holdings position as of Q4 2025 after selling out during the quarter.
  • Prospector Partners sold 37,965 MarketAxess Holdings shares in Q4 2025, an estimated $6.62M.
  • Prospector Partners first reported a position in MarketAxess Holdings in Q3 2025 and held it in 1 quarter.
  • Prospector Partners's MarketAxess Holdings position peaked at $6.62M in Q3 2025.
  • 485 funds tracked by Wall St. Rank held MarketAxess Holdings as of Q4 2025.

Based on Prospector Partners's 13F filing for Q4 2025, filed 13 Feb 2026.