Position in MKSI
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$63,768,752
-$276,307 QoQ
Shares Held
143,365
-48.6% QoQ
Ownership
0.212%
of shares outstanding
% of Portfolio
0.05%
of 13F equity value
Holder Rank
#73
of 773 holders
Holding Since
Sep 2020
16 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in MKSI Over Time
Shares Held
Position Value (USD)
Derivatives in MKSI
reported options exposure · as of Jun 30, 2026CallValue
$533,760
CallShares
1,200
PutValue
$978,560
PutShares
2,200
Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.
Position in Scientific & Technical Instruments
Technology · as of Jun 30, 2026TWO SIGMA INVESTMENTS, LP holds $509,980,587 across 14 Scientific & Technical Instruments names. MKSI ranks #3 (12.5% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | FTV |
Fortive Corp
|
3,209,327 | $196,057,786 | |
| 2 | KEYS |
Keysight Technologies, Inc.
|
339,315 | $118,784,002 | |
| 3 | MKSI |
Mks Inc
This page
|
143,365 | $63,768,752 | |
| 4 | NOVT |
Novanta Inc
|
747,369 | $52,174,440 | |
| 5 | ESE |
Esco Technologies Inc
|
76,702 | $26,848,768 | |
| 6 | VPG |
Vishay Precision Group, Inc.
|
118,862 | $17,818,602 | |
| 7 | COHR |
Coherent Corp.
|
28,944 | $11,417,539 | |
| 8 | TDY |
Teledyne Technologies Inc
|
8,483 | $5,657,312 |
All Filings in MKSI
Export CSV
20 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $533,760 | 1,200 | Call | Sole | 2026-08-14 | |
| 2026-06-30 | $63,768,752 | 143,365 | Shares | Sole | 2026-08-14 | |
| 2026-06-30 | $978,560 | 2,200 | Put | Sole | 2026-08-14 | |
| 2026-03-31 | $64,045,059 | 278,687 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $4,691,408 | 29,358 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $767,374 | 6,200 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $476,928 | 4,800 | Shares | Sole | 2025-08-14 | |
| 2024-12-31 | $4,405,258 | 42,200 | Shares | Sole | 2025-02-14 | |
| 2024-06-30 | $652,900 | 5,000 | Shares | Sole | 2024-08-14 | |
| 2024-03-31 | $571,900 | 4,300 | Shares | Sole | 2024-05-15 | |
| 2023-12-31 | $3,516,096 | 34,180 | Shares | Sole | 2024-02-14 | |
| 2023-09-30 | $11,135,534 | 128,675 | Shares | Sole | 2023-11-14 | |
| 2023-06-30 | $1,707,980 | 15,800 | Shares | Sole | 2023-08-14 | |
| 2023-03-31 | $10,942,886 | 123,481 | Shares | Sole | 2023-05-15 | |
| 2022-12-31 | $13,567,137 | 160,122 | Shares | Sole | 2023-02-14 | |
| 2022-06-30 | $10,854,456 | 105,763 | Shares | Sole | 2022-08-15 | |
| 2021-09-30 | $845,096 | 5,600 | Call | Sole | 2021-11-15 | |
| 2021-09-30 | $27,769,703 | 184,015 | Shares | Sole | 2021-11-15 | |
| 2021-09-30 | $739,459 | 4,900 | Put | Sole | 2021-11-15 | |
| 2020-09-30 | $964,391 | 8,829 | Shares | Sole | 2020-11-16 | |
| No filing history on record for this holder in this stock. | ||||||