Capstone Investment Advisors’s MarketAxess Holdings MKTX Stock Holding History

Capstone Investment 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 Q1	–	Sell	-100	Closed	-$22.6K	–	1694
2024 Q4	$22.6K	Buy	+100	New	+$26.3K	﹤0.01%	1792
2022 Q4	–	Sell	-400	Closed	-$89K	–	1602
2022 Q3	$89K	Hold	400	–	–	﹤0.01%	1579
2022 Q2	$102K	Sell	400 -2,500	-86%	-$684K	﹤0.01%	1495
2022 Q1	$987K	Buy	2,900 +2,600	+867%	+$942K	﹤0.01%	1323
2021 Q4	$123K	Sell	300 -2,600	-90%	-$1.03M	﹤0.01%	1603
2021 Q3	$1.22M	Buy	+2,900	New	+$1.33M	﹤0.01%	1344
2021 Q2	–	Sell	-900	Closed	-$448K	–	1804
2021 Q1	$448K	Sell	900 -300	-25%	-$160K	﹤0.01%	1304
2020 Q4	$685K	Buy	+1,200	New	+$654K	﹤0.01%	1180

Other funds holding MKTX

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

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

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

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

NRCM

North Reef Capital Management Laguna Beach, California $2.91B AUM 11.03% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

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

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

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

Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

Capstone Investment Advisors's MKTX Position: Q1 2026 in Review

Capstone Investment Advisors sold out of MarketAxess Holdings (MKTX) in Q1 2026, closing a stake of 4,182 shares — an estimated $758K sold.

Capstone Investment Advisors first reported a position in MKTX in Q4 2016 and held it in 13 quarters. The position peaked at $1.6M in Q4 2016. 450 funds tracked by Wall St. Rank hold MKTX as of Q1 2026.

Capstone Investment Advisors reported no remaining MarketAxess Holdings position as of Q1 2026 after selling out during the quarter.
Capstone Investment Advisors sold 4,182 MarketAxess Holdings shares in Q1 2026, an estimated $758K.
Capstone Investment Advisors first reported a position in MarketAxess Holdings in Q4 2016 and held it in 13 quarters.
Capstone Investment Advisors's MarketAxess Holdings position peaked at $1.6M in Q4 2016.
450 funds tracked by Wall St. Rank held MarketAxess Holdings as of Q1 2026.

Based on Capstone Investment Advisors's 13F filing for Q1 2026, filed 15 May 2026.