Position in MKSI
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$1,020,816
+$700,461 QoQ
Shares Held
2,295
+64.6% QoQ
Ownership
0.003%
of shares outstanding
% of Portfolio
0.52%
of 13F equity value
Holder Rank
#413
of 773 holders
Holding Since
Dec 2023
6 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, 2026Quantum Portfolio Management LLC holds $1,173,977 across 3 Scientific & Technical Instruments names. MKSI ranks #1 (87.0% of the industry book) .
All Filings in MKSI
Export CSV
6 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $1,020,816 | 2,295 | Shares | Sole | 2026-08-14 | |
| 2026-03-31 | $320,355 | 1,394 | Shares | Sole | 2026-05-01 | |
| 2025-12-31 | $461,502 | 2,888 | Shares | Sole | 2026-02-12 | |
| 2025-09-30 | $589,268 | 4,761 | Shares | Sole | 2025-10-29 | |
| 2024-03-31 | $448,077 | 3,369 | Shares | Sole | 2024-05-14 | |
| 2023-12-31 | $348,523 | 3,388 | Shares | Sole | 2024-01-26 | |
| No filing history on record for this holder in this stock. | ||||||