Supply breakdown
Shares as of Aug 4, 2026| Category | Shares | % | Value | Status |
|---|---|---|---|---|
| Circulating | 35.19M | 100.0% | $3.99B | Estimated |
| Free float | - | - | - | Unavailable |
| Insider-held, unrestricted | - | - | - | Unavailable |
| Locked team funds | - | - | - | Unavailable |
| Other restricted (unlisted classes only) | - | - | - | Unavailable |
| Total outstanding | 35.19M | 100.0% | $3.99B | Verified |
| Ownership views (overlap the categories above, never added) | ||||
| Institutional holdings (13F; over 100%, double counted) | 39.09M | 111.1% | $4.44B | Estimated |
| Insider-held, all (Forms 3, 4, 5) | - | - | - | Unavailable |
Institutional and insider holdings can include both tradable and locked shares, so they are shown for reference and never added to the total. Check: no class has more shares deducted than it has outstanding, and the review found no shares that may be counted twice: reconciles.
Valuation
- Traditional$3.99B
- Fully diluted$4.00B
- Circulating$3.99B
- Free float-
- Locked team value$0
- Other restricted value$0
Locked and restricted shares
Not reviewed yet.
Institutional holders
13F, quarter ended Jun 30, 2026| Holder | Shares | % of total |
|---|---|---|
| BlackRock, Inc. | 4.00M | 11.37% |
| PRIMECAP MANAGEMENT CO/CA/ | 3.50M | 9.96% |
| North Reef Capital Management LP | 3.40M | 9.65% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 2.10M | 5.97% |
| AQR CAPITAL MANAGEMENT LLC | 1.99M | 5.65% |
| VANGUARD CAPITAL MANAGEMENT LLC | 1.55M | 4.39% |
| FMR LLC | 1.40M | 3.99% |
| STATE STREET CORP | 1.28M | 3.64% |
| NEUBERGER BERMAN GROUP LLC | 1.23M | 3.49% |
| GOLDMAN SACHS GROUP INC | 1.03M | 2.93% |
Sum of long share positions in Form 13F reports for the quarter. 13F covers managers with over $100M in US equities; some positions are reported by more than one filer. The total is 111% of shares outstanding, so it counts some shares twice: positions reported by more than one manager, and lent shares that appear at both the lender and the buyer. Read it as an upper bound.
Insiders
Forms 3, 4 and 5Form 4 aggregation pending
Share classes
| Class | Listing | Shares outstanding | As of |
|---|---|---|---|
| Common stock | MKTX on Nasdaq | 35,192,891 | Aug 4, 2026 |
Notes and sources
- MARKETAXESS HOLDINGS INC 10-Q for period ended 2026-06-30, Cover page (0001193125-26-340249)
- SEC public float (non-affiliates): $7.30B as of Dec 31, 2025, from the 10-K cover. It is a dollar value at a past date, not circulating supply.