Position in MKSI
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$62,746,156
+$6,811,322 QoQ
Shares Held
141,066
-42.0% QoQ
Ownership
0.209%
of shares outstanding
% of Portfolio
4.35%
of 13F equity value
Holder Rank
#75
of 773 holders
Holding Since
Jun 2023
13 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in MKSI Over Time
Shares Held
Position Value (USD)
Position in Scientific & Technical Instruments
Technology · as of Jun 30, 2026Harvey Partners, LLC holds $137,097,369 across 3 Scientific & Technical Instruments names. MKSI ranks #1 (45.8% of the industry book) .
All Filings in MKSI
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13 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $62,746,156 | 141,066 | Shares | Sole | 2026-08-14 | |
| 2026-03-31 | $55,934,834 | 243,396 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $46,213,680 | 289,197 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $35,769,530 | 289,000 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $26,787,356 | 269,599 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $20,919,150 | 261,000 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $19,781,905 | 189,500 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 | $18,480,700 | 170,000 | Shares | Sole | 2024-11-14 | |
| 2024-06-30 | $18,999,390 | 145,500 | Shares | Sole | 2024-08-14 | |
| 2024-03-31 | $20,615,000 | 155,000 | Shares | Sole | 2024-05-15 | |
| 2023-12-31 | $15,379,065 | 149,500 | Shares | Sole | 2024-02-14 | |
| 2023-09-30 | $14,235,830 | 164,500 | Shares | Sole | 2023-11-14 | |
| 2023-06-30 | $16,755,500 | 155,000 | Shares | Sole | 2023-08-14 | |
| No filing history on record for this holder in this stock. | ||||||