Marketaxess Holdings Inc
MKTX- Exchange
- Nasdaq
- Industry
- Security Brokers, Dealers & Flotation Companies
- SEC CIK
- 0001278021
In the last 90 days, Marketaxess Holdings Inc insiders filed 0 open-market purchases and 4 sales; 397 institutions reported holding it in 13F filings for Q2 2026, worth $4.44B in total; no superinvestor holds it.
Superinvestors holding MKTX, Q2 2026
No superinvestor reported holding MKTX in Q2 2026.
Moves by quarter
Superinvestors that opened, added to, trimmed or sold out of MKTX each quarter, comparing shares with the quarter before. A superinvestor that didn't file for a quarter isn't listed, and isn't counted as selling.
Q2 2024
0 superinvestors holding at quarter end
- Sold out
- Maverick Capital
Q1 2024
1 superinvestor holding at quarter end
Q1 2023
0 superinvestors holding at quarter end
- Sold out
- Weitz Investment Management
Q4 2022
1 superinvestor holding at quarter end
- Reduced
- Weitz Investment Management (−67.9%)
Q2 2022
1 superinvestor holding at quarter end
- Added
- Weitz Investment Management (+30.8%)
Q4 2021
1 superinvestor holding at quarter end
- Added
- Weitz Investment Management (+4.9%)
- Sold out
- Maverick Capital
Q3 2021
2 superinvestors holding at quarter end
- New
- Maverick Capital
- Added
- Weitz Investment Management (+7.9%)
Q2 2021
1 superinvestor holding at quarter end