MKS Inc
MKSI
620 hedge funds and large institutions have $15.8B invested in MKS Inc in 2026 Q1 according to their latest regulatory filings, with 165 funds opening new positions, 203 increasing their positions, 190 reducing their positions, and 54 closing their positions.
881% more call options, than puts
Call options by funds: $496M | Put options by funds: $50.6M
206% more first-time investments, than exits
New positions opened: 165 | Existing positions closed: 54
85% more funds holding in top 10
Funds holding in top 10: 13 → 24 (+11)
40% more capital invested
Capital invested by funds: $11.3B → $15.8B (+$4.51B)
21% more funds holding
Funds holding: 514 → 620 (+106)
7% more repeat investments, than reductions
Existing positions increased: 203 | Existing positions reduced: 190
2.51% less ownership
Funds ownership: 105% → 102.49% (-2.5%)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
AMH
Aspex Management (HK)
Central,
Hong Kong
|
+$348M |
| 2 |
WRCM
Whale Rock Capital Management
Boston,
Massachusetts
|
+$295M |
| 3 |
Capital World Investors
Los Angeles,
California
|
+$289M |
| 4 |
Point72 Asset Management
Stamford,
Connecticut
|
+$223M |
| 5 |
JP Morgan Chase
New York
|
+$123M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Victory Capital Management
San Antonio,
Texas
|
-$381M |
| 2 |
Capital International Investors
Los Angeles,
California
|
-$287M |
| 3 |
Fidelity Investments
Boston,
Massachusetts
|
-$286M |
| 4 |
T. Rowe Price Associates
Baltimore,
Maryland
|
-$238M |
| 5 |
CB
Cooke & Bieler
Philadelphia,
Pennsylvania
|
-$171M |
MKSI Hedge Fund Activity: Q1 2026 in Review
620 of the 8,184 institutional investors tracked by Wall St. Rank reported a position in MKS Inc (MKSI) for Q1 2026, worth a combined $15.8B — up 40% from $11.3B a quarter earlier.
Buyers outnumbered sellers: 165 funds opened new MKSI positions and 54 closed out — a net gain of 111 holders — while 203 added to existing stakes and 190 trimmed.
The largest buyer was Aspex Management (HK), opening a new position worth an estimated $348M. The largest seller was Victory Capital Management, cutting an estimated $381M.
- 620 institutional investors held MKS Inc (MKSI) as of Q1 2026, up from 514 in Q4 2025.
- Funds reported $15.8B of MKS Inc stock for Q1 2026, up 40% quarter-over-quarter.
- 165 funds opened new MKS Inc positions in Q1 2026 and 54 closed out, a net change of +111 holders.
- The largest MKS Inc buyer in Q1 2026 was Aspex Management (HK), an estimated $348M added.
- The largest MKS Inc seller in Q1 2026 was Victory Capital Management, an estimated $381M sold.
Based on aggregated 13F filings for Q1 2026.