Atom Investors’s MarketAxess Holdings MKTX Stock Holding History

Atom Investors’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	$303K	Buy	+2,669	New	+$380K	0.03%	687
2025 Q3	–	Sell	-19,261	Closed	-$4.3M	–	744
2025 Q2	$4.3M	Buy	+19,261	New	+$4.23M	0.38%	64
2020 Q4	–	Sell	-566	Closed	-$273K	–	495
2020 Q3	$273K	Buy	+566	New	+$280K	0.03%	309
2019 Q1	–	Sell	-4,634	Closed	-$979K	–	638
2018 Q4	$979K	Buy	+4,634	New	+$959K	0.1%	343

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

Atom Investors's MKTX Position: Q2 2026 in Review

Atom Investors opened a new position in MarketAxess Holdings (MKTX) in Q2 2026: 2,669 shares worth $303K. The stake represents 0.03% of the portfolio and ranks #687 among its holdings. This is a return to the name: Atom Investors previously reported a position in MKTX as recently as Q2 2025.

Atom Investors first reported a position in MKTX in Q4 2018 and has held it in 4 quarters since. The position peaked at $4.3M in Q2 2025. 397 funds tracked by Wall St. Rank hold MKTX as of Q2 2026.

Atom Investors held 2,669 shares of MarketAxess Holdings worth $303K as of Q2 2026.
MarketAxess Holdings was a new Atom Investors position in Q2 2026.
MarketAxess Holdings made up 0.03% of Atom Investors's portfolio in Q2 2026, its #687 holding.
Atom Investors first reported a position in MarketAxess Holdings in Q4 2018 and has held it in 4 quarters since.
Atom Investors's MarketAxess Holdings position peaked at $4.3M in Q2 2025.
397 funds tracked by Wall St. Rank held MarketAxess Holdings as of Q2 2026.

Based on Atom Investors's 13F filing for Q2 2026, filed 14 Aug 2026.