TwinBeech Capital’s MarketAxess Holdings MKTX Stock Holding History

TwinBeech 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	$700K	Buy	+6,167	New	+$879K	0.13%	190
2025 Q3	–	Sell	-34,216	Closed	-$7.64M	–	730
2025 Q2	$7.64M	Buy	+34,216	New	+$7.52M	0.17%	154
2024 Q4	–	Sell	-24,141	Closed	-$6.18M	–	811
2024 Q3	$6.18M	Buy	+24,141	New	+$5.66M	0.12%	206
2023 Q4	–	Sell	-75,119	Closed	-$16M	–	801
2023 Q3	$16M	Sell	75,119 -14,875	-17%	-$3.61M	0.31%	93
2023 Q2	$23.5M	Buy	+89,994	New	+$26.8M	0.46%	57
2022 Q4	–	Sell	-5,317	Closed	-$1.18M	–	843
2022 Q3	$1.18M	Sell	5,317 -26,311	-83%	-$6.75M	0.03%	427
2022 Q2	$8.1M	Sell	31,628 -923	-3%	-$252K	0.36%	81
2022 Q1	$11.1M	Buy	+32,551	New	+$11.8M	0.49%	63
2021 Q4	–	Sell	-13,593	Closed	-$5.72M	–	714
2021 Q3	$5.72M	Buy	13,593 +1,748	+15%	+$802K	0.4%	57
2021 Q2	$5.49M	Buy	+11,845	New	+$5.64M	0.67%	45
2020 Q3	–	Sell	-1,797	Closed	-$900K	–	524
2020 Q2	$900K	Buy	+1,797	New	+$837K	0.2%	156

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

TwinBeech Capital's MKTX Position: Q2 2026 in Review

TwinBeech Capital opened a new position in MarketAxess Holdings (MKTX) in Q2 2026: 6,167 shares worth $700K. The stake represents 0.13% of the portfolio and ranks #190 among its holdings. This is a return to the name: TwinBeech Capital previously reported a position in MKTX as recently as Q2 2025.

TwinBeech Capital first reported a position in MKTX in Q2 2020 and has held it in 11 quarters since. The position peaked at $23.5M in Q2 2023. 397 funds tracked by Wall St. Rank hold MKTX as of Q2 2026.

TwinBeech Capital held 6,167 shares of MarketAxess Holdings worth $700K as of Q2 2026.
MarketAxess Holdings was a new TwinBeech Capital position in Q2 2026.
MarketAxess Holdings made up 0.13% of TwinBeech Capital's portfolio in Q2 2026, its #190 holding.
TwinBeech Capital first reported a position in MarketAxess Holdings in Q2 2020 and has held it in 11 quarters since.
TwinBeech Capital's MarketAxess Holdings position peaked at $23.5M in Q2 2023.
397 funds tracked by Wall St. Rank held MarketAxess Holdings as of Q2 2026.

Based on TwinBeech Capital's 13F filing for Q2 2026, filed 14 Aug 2026.