Position in COHR
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$652,933
-$4,303,140 QoQ
Shares Held
2,741
-89.8% QoQ
Ownership
0.001%
of shares outstanding
% of Portfolio
0.04%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Jun 2023
11 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in COHR Over Time
Shares Held
Position Value (USD)
Derivatives in COHR
reported options exposure · as of Mar 31, 2026CallValue
$0
CallShares
0
PutValue
$3,882,823
PutShares
16,300
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, 2026Parallax Volatility Advisers, L.P. holds $20,144,242 across 1 Scientific & Technical Instruments name.
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | NOVT |
Novanta Inc
|
298,876 | $20,144,242 |
All Filings in COHR
Export CSV
26 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $652,933 | 2,741 | Shares | Sole | 2026-05-15 | |
| 2026-03-31 | $3,882,823 | 16,300 | Put | Sole | 2026-05-15 | |
| 2025-12-31 | $3,229,975 | 17,500 | Put | Sole | 2026-02-17 | |
| 2025-12-31 | $4,956,073 | 26,852 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $2,315,980 | 21,500 | Call | Sole | 2025-11-14 | |
| 2025-09-30 | $1,940,683 | 18,016 | Shares | Sole | 2025-11-14 | |
| 2025-09-30 | $1,885,100 | 17,500 | Put | Sole | 2025-11-14 | |
| 2025-06-30 | $1,757,704 | 19,703 | Shares | Sole | 2025-08-14 | |
| 2025-06-30 | $446,050 | 5,000 | Put | Sole | 2025-08-14 | |
| 2025-03-31 | $1,158,529 | 17,840 | Shares | Sole | 2025-05-15 | |
| 2025-03-31 | $2,272,900 | 35,000 | Call | Sole | 2025-05-15 | |
| 2025-03-31 | $324,700 | 5,000 | Put | Sole | 2025-05-15 | |
| 2024-12-31 | $5,826,463 | 61,506 | Shares | Sole | 2025-02-14 | |
| 2024-12-31 | $3,789,200 | 40,000 | Call | Sole | 2025-02-14 | |
| 2024-12-31 | $473,650 | 5,000 | Put | Sole | 2025-02-14 | |
| 2024-09-30 | $4,061,319 | 45,679 | Shares | Sole | 2024-11-14 | |
| 2024-09-30 | $1,804,873 | 20,300 | Call | Sole | 2024-11-14 | |
| 2024-09-30 | $1,520,361 | 17,100 | Put | Sole | 2024-11-14 | |
| 2024-06-30 | $2,024,315 | 27,937 | Shares | Sole | 2024-08-14 | |
| 2024-06-30 | $3,572,278 | 49,300 | Call | Sole | 2024-08-14 | |
| 2024-06-30 | $1,086,900 | 15,000 | Put | Sole | 2024-08-14 | |
| 2024-03-31 | $4,689,684 | 77,362 | Shares | Sole | 2024-05-15 | |
| 2024-03-31 | $303,100 | 5,000 | Put | Sole | 2024-05-15 | |
| 2024-03-31 | $775,936 | 12,800 | Call | Sole | 2024-05-15 | |
| 2023-09-30 | $4,471,680 | 137,000 | Call | Sole | 2023-11-14 | |
| 2023-06-30 | $5,709,760 | 112,000 | Call | Sole | 2023-08-14 | |
| No filing history on record for this holder in this stock. | ||||||