MKTX

Marketaxess Holdings Inc

Latest period2026 - Q1Total superinvestors448

Top 10 Superinvestors by Shares Owned

This chart shows the top 10 superinvestors based on the number of shares they owned in 2025-Q4 and 2026-Q1. According to the most recent SEC 13F filing, 448 superinvestors own shares of Marketaxess Holdings Inc (MKTX), although recent data may remain incomplete due to pending filings.

Quarter-over-Quarter Change (%)

This chart highlights the quarter-over-quarter change (%) in the number of superinvestors holding Marketaxess Holdings Inc (MKTX), the total shares they held, and the total reported dollar value. It gives a clear view of whether there is ongoing momentum. The dotted lines at the top and bottom adjust longer bars to keep smaller data points visible for better comparison.

Superinvestors' Activity (%) Over the Last 4 Quarters

This chart shows superinvestors' activity with Marketaxess Holdings Inc (MKTX) over the last four quarters, highlighting the percentage of investors who added, increased, decreased, held, or exited their positions, revealing shifts in sentiment over time.

Superinvestors' Past Actions

This chart displays superinvestors' past actions with Marketaxess Holdings Inc (MKTX) over the last 10 years (40 quarters), helping to visualize the collective momentum and investment trends over time.

Superinvestors ownership

SuperinvestorPortfolio %Reported Value
Spencer Fleming@Blackrock, Inc.
Recent Activity
Increased 8.78%
0.02%
$672.319M
4.075M shares@ 164.98 avg price
Jorge Antonio Rodriguez@Primecap Management Co Ca
Recent Activity
Increased 5.41%
0.44%
$552.209M
3.347M shares@ 164.99 avg price
Henry Parkin@Aqr Capital Management Llc
Recent Activity
Increased 4.92%
0.21%
$442.764M
2.684M shares@ 164.99 avg price
Christine M. Buchanan@Vanguard Portfolio Management Llc
Recent Activity
New Position
0.02%
$356.962M
2.164M shares@ 164.99 avg price
James H. Hanna, III@North Reef Capital Management Lp
Recent Activity
Increased 16.51%
10.65%
$309.338M
1.875M shares@ 164.98 avg price
Christine M. Buchanan@Vanguard Capital Management Llc
Recent Activity
New Position
0.01%
$265.496M
1.609M shares@ 164.99 avg price
Stephanie J. Brown@Fmr Llc
Recent Activity
Decreased -24.2%
0.02%
$250.674M
1.519M shares@ 164.99 avg price
ELIZABETH SCHAEFER@State Street Corp
Recent Activity
Increased 2.61%
0.01%
$211.316M
1.281M shares@ 164.99 avg price
Ashley Sousa@Van Eck Associates Corp
Recent Activity
Increased 2.01%
0.16%
$204.457M
1.239M shares@ 164.98 avg price
Gil Raviv@Millennium Management Llc
Recent Activity
Increased 241.61%
0.09%
$198.865M
1.205M shares@ 164.98 avg price

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