Callahan Advisors’s MarketAxess Holdings MKTX Stock Holding History

Callahan Advisors’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
2025 Q3	–	Sell	-5,500	Closed	-$1.23M	–	175
2025 Q2	$1.23M	Hold	5,500	–	–	0.11%	102
2025 Q1	$1.19M	Sell	5,500 -3	-0.1%	-$630	0.11%	107
2024 Q4	$1.24M	Hold	5,503	–	–	0.12%	99
2024 Q3	$1.41M	Hold	5,503	–	–	0.14%	95
2024 Q2	$1.1M	Buy	+5,503	New	+$1.13M	0.11%	98

Other funds holding MKTX

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

VanEck Associates New York $133B AUM 72.99% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

HSBC Holdings London, United Kingdom $192B AUM 27.2% 1-Year Est. Return

T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return

GAM

GuardCap Asset Management London, United Kingdom $1.75B AUM 7.74% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

AQR Capital Management Greenwich, Connecticut $218B AUM 29.41% 1-Year Est. Return

Callahan Advisors's MKTX Position: Q3 2025 in Review

Callahan Advisors sold out of MarketAxess Holdings (MKTX) in Q3 2025, closing a stake of 5,500 shares — an estimated $1.23M sold.

Callahan Advisors first reported a position in MKTX in Q2 2024 and held it in 5 quarters. The position peaked at $1.41M in Q3 2024. 450 funds tracked by Wall St. Rank hold MKTX as of Q3 2025.

Callahan Advisors reported no remaining MarketAxess Holdings position as of Q3 2025 after selling out during the quarter.
Callahan Advisors sold 5,500 MarketAxess Holdings shares in Q3 2025, an estimated $1.23M.
Callahan Advisors first reported a position in MarketAxess Holdings in Q2 2024 and held it in 5 quarters.
Callahan Advisors's MarketAxess Holdings position peaked at $1.41M in Q3 2024.
450 funds tracked by Wall St. Rank held MarketAxess Holdings as of Q3 2025.

Based on Callahan Advisors's 13F filing for Q3 2025, filed 31 Oct 2025.