Stock ownership
MKS INSTRUMENT INC
- Ticker
- MKSI
- CUSIP
- 55306N104
- Held by
- 1 fund
- Combined value
- $18,678,957
+% bought more, −% sold down — each fund's last-quarter move (change in share count).
| Fund | Quarter | Last quarter | Value | % of fund |
|---|---|---|---|---|
| Tudor Investment Corp position history | Q1 2026 | −22% | $18,678,957 | 0.1% |