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	-300	Closed	-$67.8K	–	1693
2024 Q4	$67.8K	Buy	+300	New	+$79K	﹤0.01%	1740
2024 Q3	–	Sell	-200	Closed	-$40.1K	–	2094
2024 Q2	$40.1K	Hold	200	–	–	﹤0.01%	1973
2024 Q1	$43.9K	Buy	+200	New	+$47.2K	﹤0.01%	2214
2022 Q4	–	Sell	-700	Closed	-$156K	–	1601
2022 Q3	$156K	Buy	700 +200	+40%	+$51.3K	﹤0.01%	1514
2022 Q2	$128K	Sell	500 -600	-55%	-$164K	﹤0.01%	1477
2022 Q1	$374K	Buy	1,100 +200	+22%	+$72.5K	﹤0.01%	1554
2021 Q4	$370K	Buy	900 +500	+125%	+$197K	﹤0.01%	1508
2021 Q3	$168K	Buy	+400	New	+$184K	﹤0.01%	1721
2021 Q2	–	Sell	-500	Closed	-$249K	–	1803
2021 Q1	$249K	Buy	500 +200	+67%	+$107K	﹤0.01%	1395
2020 Q4	$171K	Buy	+300	New	+$163K	﹤0.01%	1477

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.