CSS LLC’s MarketAxess Holdings MKTX Stock Holding History

CSS LLC’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	$571K	Buy	+5,030	New	+$717K	0.02%	510
2026 Q1	–	Sell	-1,120	Closed	-$203K	–	1112
2025 Q4	$203K	Buy	+1,120	New	+$191K	0.01%	766
2019 Q3	–	Sell	-500	Closed	-$161K	–	731
2019 Q2	$161K	Buy	+500	New	+$145K	0.01%	483

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

CSS LLC's MKTX Position: Q2 2026 in Review

CSS LLC opened a new position in MarketAxess Holdings (MKTX) in Q2 2026: 5,030 shares worth $571K. The stake represents 0.02% of the portfolio and ranks #510 among its holdings. This is a return to the name: CSS LLC previously reported a position in MKTX as recently as Q4 2025.

CSS LLC first reported a position in MKTX in Q2 2019 and has held it in 3 quarters since. 397 funds tracked by Wall St. Rank hold MKTX as of Q2 2026.

CSS LLC held 5,030 shares of MarketAxess Holdings worth $571K as of Q2 2026.
MarketAxess Holdings was a new CSS LLC position in Q2 2026.
MarketAxess Holdings made up 0.02% of CSS LLC's portfolio in Q2 2026, its #510 holding.
CSS LLC first reported a position in MarketAxess Holdings in Q2 2019 and has held it in 3 quarters since.
397 funds tracked by Wall St. Rank held MarketAxess Holdings as of Q2 2026.

Based on CSS LLC's 13F filing for Q2 2026, filed 14 Aug 2026.