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 Q2	–	Sell	-104,174	Closed	-$17.2M	–	923
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 $6.73T AUM 46.02% 1-Year Est. Return

Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return

NRCM

North Reef Capital Management Laguna Beach, California $2.61B AUM 11.5% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Neuberger Berman Group New York $150B AUM 40.08% 1-Year Est. Return

Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return

Polar Asset Management Partners's MKTX Position: Q2 2026 in Review

Polar Asset Management Partners sold out of MarketAxess Holdings (MKTX) in Q2 2026, closing a stake of 104,174 shares — an estimated $17.2M sold.

Polar Asset Management Partners first reported a position in MKTX in Q3 2021 and held it in 5 quarters. The position peaked at $17.2M in Q1 2026. 396 funds tracked by Wall St. Rank hold MKTX as of Q2 2026.

Polar Asset Management Partners reported no remaining MarketAxess Holdings position as of Q2 2026 after selling out during the quarter.
Polar Asset Management Partners sold 104,174 MarketAxess Holdings shares in Q2 2026, an estimated $17.2M.
Polar Asset Management Partners first reported a position in MarketAxess Holdings in Q3 2021 and held it in 5 quarters.
Polar Asset Management Partners's MarketAxess Holdings position peaked at $17.2M in Q1 2026.
396 funds tracked by Wall St. Rank held MarketAxess Holdings as of Q2 2026.

Based on Polar Asset Management Partners's 13F filing for Q2 2026, filed 14 Aug 2026.