MarketAxess Holdings Inc. (MKTX) Insider Trading
Over the last 3 months, MKTX insiders made 0 open-market buys and 3 sales, a net sale of -$39K (SEC Form 4). Over the last 6 months, 306 institutions increased and 334 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
3
Net (3m)
-$39.4K
Insider trades by month Buys Sells
Mar
Apr
May
Jun
Jul
Aug
Context3-month price +25.9%Institutions mixed (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 10, 2026 | Pintoff Scottofficer: General Counsel and Secretary | Sell | 100 | $162.60 |
| Jul 10, 2026 | Pintoff Scottofficer: General Counsel and Secretary | Sell | 100 | $115.12 |
| Jun 12, 2026 | Gibson Kourtneydirector | Grant | 1,390 | — |
| Jun 12, 2026 | SCHICIANO KENNETH Tdirector | Grant | 1,390 | — |
| Jun 12, 2026 | Altobello Nancy A.director | Grant | 1,390 | — |
| Jun 12, 2026 | Begleiter Steven Ldirector | Grant | 1,390 | — |
| Jun 12, 2026 | Cifu Douglas Adirector | Grant | 1,390 | — |
| Jun 12, 2026 | Chwick Janedirector | Grant | 1,390 | — |
| Jun 12, 2026 | Portney Emily Hopedirector | Grant | 1,390 | — |
| Jun 12, 2026 | Cruger William Frank Jr.director | Grant | 1,390 | — |
| Jun 12, 2026 | HERNANDEZ CARLOS MAURICIOdirector | Grant | 2,616 | — |
| Jun 12, 2026 | Pintoff Scottofficer: General Counsel and Secretary | Sell | 100 | $116.03 |
| Jun 12, 2026 | KETCHUM RICHARD Gdirector | Grant | 1,390 | — |
| Jun 12, 2026 | Hoornweg Robertodirector | Grant | 1,390 | — |
| May 11, 2026 | Pintoff Scottofficer: General Counsel and Secretary | Sell | 100 | $146.99 |
| May 4, 2026 | Quan Williamofficer: Chief Technology Officer | Grant | 218 | — |
| Apr 10, 2026 | Pintoff Scottofficer: General Counsel and Secretary | Sell | 100 | $171.96 |
| Apr 6, 2026 | CONCANNON CHRISTOPHER Rdirector, officer: Chief Executive Officer | Tax | 349 | $171.46 |
| Mar 10, 2026 | Pintoff Scottofficer: General Counsel and Secretary | Sell | 100 | $184.93 |
| Mar 2, 2026 | SCHICIANO KENNETH Tdirector | Grant | 259 | — |
| Mar 2, 2026 | Panchal Naineshkumar Shantilalofficer: Chief Information Officer | Tax | 1,470 | $192.00 |
| Mar 2, 2026 | Cifu Douglas Adirector | Grant | 259 | — |
| Feb 17, 2026 | Panchal Naineshkumar Shantilalofficer: Chief Information Officer | Tax | 159 | $179.36 |
| Feb 17, 2026 | Fiszel Bieler Ileneofficer: Chief Financial Officer | Tax | 439 | $179.36 |
| Feb 17, 2026 | Panchal Naineshkumar Shantilalofficer: Chief Information Officer | Grant | 394 | — |
| Feb 17, 2026 | Panchal Naineshkumar Shantilalofficer: Chief Information Officer | Tax | 1,016 | $179.36 |
| Feb 17, 2026 | Fiszel Bieler Ileneofficer: Chief Financial Officer | Grant | 5,005 | — |
| Feb 17, 2026 | CONCANNON CHRISTOPHER Rdirector, officer: Chief Executive Officer | Grant | 1,696 | — |
| Feb 17, 2026 | Panchal Naineshkumar Shantilalofficer: Chief Information Officer | Grant | 3,239 | — |
| Feb 17, 2026 | CONCANNON CHRISTOPHER Rdirector, officer: Chief Executive Officer | Tax | 1,750 | $179.36 |
Source: MKTX SEC Form 4 filings, latest Aug 10, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their MKTX positions over the last 6 months (SEC Form 13F).
Increased
306
New positions
117
Reduced
334
Sold out
109
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| BLACKROCK, INC. | Increased | 4.1M | May 13, 2026 |
| BlackRock, Inc. | Reduced | 4.0M | Aug 7, 2026 |
| PRIMECAP MANAGEMENT CO/CA/ | Increased | 3.5M | Aug 14, 2026 |
| North Reef Capital Management LP | Increased | 3.4M | Aug 14, 2026 |
| PRIMECAP MANAGEMENT CO/CA/ | Increased | 3.3M | May 11, 2026 |
| AQR CAPITAL MANAGEMENT LLC | Increased | 2.7M | May 15, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 2.2M | May 8, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Reduced | 2.1M | Aug 13, 2026 |
| AQR CAPITAL MANAGEMENT LLC | Reduced | 2.0M | Aug 14, 2026 |
| NORTH REEF CAPITAL MANAGEMENT LP | Increased | 1.9M | May 15, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 1.6M | May 15, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Reduced | 1.5M | Aug 13, 2026 |
| FMR LLC | Reduced | 1.5M | May 15, 2026 |
| FMR LLC | Reduced | 1.4M | Aug 13, 2026 |
| STATE STREET CORP | Increased | 1.3M | Aug 7, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.