Quadrature Capital’s MarketAxess Holdings MKTX Stock Holding History

Quadrature Capital’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	$2.86M	Buy	+25,185	New	+$3.59M	0.02%	410
2026 Q1	–	Sell	-39,174	Closed	-$7.1M	–	1676
2025 Q4	$7.1M	Buy	39,174 +14,535	+59%	+$2.48M	0.07%	183
2025 Q3	$4.29M	Buy	24,639 +13,653	+124%	+$2.67M	0.05%	213
2025 Q2	$2.45M	Buy	+10,986	New	+$2.41M	0.04%	267
2024 Q4	–	Sell	-1,471	Closed	-$377K	–	1270
2024 Q3	$377K	Buy	+1,471	New	+$345K	0.01%	593
2023 Q1	–	Sell	-6,489	Closed	-$1.81M	–	1086
2022 Q4	$1.81M	Buy	+6,489	New	+$1.67M	0.05%	252
2020 Q3	–	Sell	-500	Closed	-$250K	–	845
2020 Q2	$250K	Buy	+500	New	+$233K	0.03%	520
2019 Q1	–	Sell	-1,123	Closed	-$237K	–	640
2018 Q4	$237K	Buy	+1,123	New	+$232K	0.04%	374
2017 Q2	–	Sell	-7,135	Closed	-$1.34M	–	688
2017 Q1	$1.34M	Sell	7,135 -4,501	-39%	-$816K	0.1%	235
2016 Q4	$1.71M	Buy	+11,636	New	+$1.85M	0.05%	317
2016 Q1	–	Sell	-6,563	Closed	-$732K	–	535
2015 Q4	$732K	Buy	+6,563	New	+$671K	0.11%	236

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 $3.38T AUM 44.17% 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

Quadrature Capital's MKTX Position: Q2 2026 in Review

Quadrature Capital opened a new position in MarketAxess Holdings (MKTX) in Q2 2026: 25,185 shares worth $2.86M. The stake represents 0.02% of the portfolio and ranks #410 among its holdings. This is a return to the name: Quadrature Capital previously reported a position in MKTX as recently as Q4 2025.

Quadrature Capital first reported a position in MKTX in Q4 2015 and has held it in 11 quarters since. The position peaked at $7.1M in Q4 2025. 397 funds tracked by Wall St. Rank hold MKTX as of Q2 2026.

Quadrature Capital held 25,185 shares of MarketAxess Holdings worth $2.86M as of Q2 2026.
MarketAxess Holdings was a new Quadrature Capital position in Q2 2026.
MarketAxess Holdings made up 0.02% of Quadrature Capital's portfolio in Q2 2026, its #410 holding.
Quadrature Capital first reported a position in MarketAxess Holdings in Q4 2015 and has held it in 11 quarters since.
Quadrature Capital's MarketAxess Holdings position peaked at $7.1M in Q4 2025.
397 funds tracked by Wall St. Rank held MarketAxess Holdings as of Q2 2026.

Based on Quadrature Capital's 13F filing for Q2 2026, filed 7 Aug 2026.