MKS Inc
MKSI
514 hedge funds and large institutions have $11.3B invested in MKS Inc in 2025 Q4 according to their latest regulatory filings, with 131 funds opening new positions, 176 increasing their positions, 146 reducing their positions, and 42 closing their positions.
475% more call options, than puts
Call options by funds: $325M | Put options by funds: $56.5M
212% more first-time investments, than exits
New positions opened: 131 | Existing positions closed: 42
63% more funds holding in top 10
Funds holding in top 10: 8 → 13 (+5)
27% more capital invested
Capital invested by funds: $8.91B → $11.3B (+$2.36B)
21% more repeat investments, than reductions
Existing positions increased: 176 | Existing positions reduced: 146
18% more funds holding
Funds holding: 434 → 514 (+80)
2.22% less ownership
Funds ownership: 107.22% → 105% (-2.2%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Invesco
Atlanta,
Georgia
|
+$218M |
| 2 |
JP Morgan Chase
New York
|
+$132M |
| 3 |
SCA
Southpoint Capital Advisors
New York
|
+$89M |
| 4 |
Westfield Capital Management
Boston,
Massachusetts
|
+$76.6M |
| 5 |
American Century Companies
Kansas City,
Missouri
|
+$58.7M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Victory Capital Management
San Antonio,
Texas
|
-$151M |
| 2 |
Nordea Investment Management
Stockholm,
Sweden
|
-$148M |
| 3 |
T. Rowe Price Associates
Baltimore,
Maryland
|
-$130M |
| 4 |
FCM
Frontier Capital Management
Boston,
Massachusetts
|
-$78.6M |
| 5 |
Wellington Management Group
Boston,
Massachusetts
|
-$68.5M |
MKSI Hedge Fund Activity: Q4 2025 in Review
514 of the 8,265 institutional investors tracked by Wall St. Rank reported a position in MKS Inc (MKSI) for Q4 2025, worth a combined $11.3B — up 27% from $8.91B a quarter earlier.
Buyers outnumbered sellers: 131 funds opened new MKSI positions and 42 closed out — a net gain of 89 holders — while 176 added to existing stakes and 146 trimmed.
The largest buyer was Invesco, adding an estimated $218M. The largest seller was Victory Capital Management, cutting an estimated $151M.
- 514 institutional investors held MKS Inc (MKSI) as of Q4 2025, up from 434 in Q3 2025.
- Funds reported $11.3B of MKS Inc stock for Q4 2025, up 27% quarter-over-quarter.
- 131 funds opened new MKS Inc positions in Q4 2025 and 42 closed out, a net change of +89 holders.
- The largest MKS Inc buyer in Q4 2025 was Invesco, an estimated $218M added.
- The largest MKS Inc seller in Q4 2025 was Victory Capital Management, an estimated $151M sold.
Based on aggregated 13F filings for Q4 2025.