Polar Asset Management Partners’s MarketAxess Holdings MKTX Stock Holding History

Polar Asset Management 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
2026 Q1	$17.2M	Buy	104,174 +87,474	+524%	+$15.3M	0.34%	52
2025 Q4	$3.03M	Sell	16,700 -23,546	-59%	-$4.02M	0.04%	315
2025 Q3	$7.01M	Buy	+40,246	New	+$7.87M	0.08%	194
2022 Q1	–	Sell	-630	Closed	-$259K	–	1409
2021 Q4	$259K	Buy	630 +18	+3%	+$7.1K	﹤0.01%	993
2021 Q3	$257K	Buy	+612	New	+$281K	﹤0.01%	951

Other funds holding MKTX

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return

AQR Capital Management Greenwich, Connecticut $218B AUM 29.41% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

NRCM

North Reef Capital Management Laguna Beach, California $2.91B AUM 11.03% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

VanEck Associates New York $133B AUM 72.99% 1-Year Est. Return

Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

Polar Asset Management Partners's MKTX Position: Q1 2026 in Review

Polar Asset Management Partners increased its MarketAxess Holdings (MKTX) stake by 524% in Q1 2026, buying an estimated $15.3M and bringing the position to 104,174 shares worth $17.2M. The position accounts for 0.34% of the portfolio, ranked #52.

Polar Asset Management Partners first reported a position in MKTX in Q3 2021 and has held it in 5 quarters since. 447 funds tracked by Wall St. Rank hold MKTX as of Q1 2026.

Polar Asset Management Partners held 104,174 shares of MarketAxess Holdings worth $17.2M as of Q1 2026.
Polar Asset Management Partners bought 87,474 MarketAxess Holdings shares in Q1 2026, an estimated $15.3M.
MarketAxess Holdings made up 0.34% of Polar Asset Management Partners's portfolio in Q1 2026, its #52 holding.
Polar Asset Management Partners first reported a position in MarketAxess Holdings in Q3 2021 and has held it in 5 quarters since.
447 funds tracked by Wall St. Rank held MarketAxess Holdings as of Q1 2026.

Based on Polar Asset Management Partners's 13F filing for Q1 2026, filed 15 May 2026.