Supply breakdown
Shares as of Jul 28, 2026| Category | Shares | % | Value | Status |
|---|---|---|---|---|
| Circulating | 67.62M | 100.0% | $30.08B | Estimated |
| Free float | - | - | - | Unavailable |
| Insider-held, unrestricted | - | - | - | Unavailable |
| Locked team funds | - | - | - | Unavailable |
| Other restricted (unlisted classes only) | - | - | - | Unavailable |
| Total outstanding | 67.62M | 100.0% | $30.08B | Verified |
| Ownership views (overlap the categories above, never added) | ||||
| Institutional holdings (13F; over 100%, double counted) | 70.83M | 104.8% | $31.51B | 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$30.08B
- Fully diluted$32.34B
- Circulating$30.08B
- 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. | 6.93M | 10.25% |
| Invesco Ltd. | 4.66M | 6.89% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 3.71M | 5.48% |
| JPMORGAN CHASE & CO | 3.37M | 4.99% |
| VANGUARD CAPITAL MANAGEMENT LLC | 3.05M | 4.51% |
| STATE STREET CORP | 2.13M | 3.16% |
| Point72 Asset Management, L.P. | 2.00M | 2.95% |
| Capital International Investors | 1.92M | 2.83% |
| PRICE T ROWE ASSOCIATES INC /MD/ | 1.89M | 2.79% |
| Aspex Management (HK) Ltd | 1.82M | 2.69% |
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 105% 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 | MKSI on Nasdaq | 67,617,558 | Jul 28, 2026 |
Notes and sources
- MKS INC 10-Q for period ended 2026-06-30, Cover page (0001193125-26-337821)
- SEC public float (non-affiliates): $6.67B as of Jun 30, 2025, from the 10-K cover. It is a dollar value at a past date, not circulating supply.