Parallax Volatility Advisers, L.P.
Position in AMPX — Amprius Technologies, Inc.
CIK 1521001
San Francisco, CA
Position in AMPX
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$965,737
+$278,237 QoQ
Shares Held
69,678
+70.9% QoQ
Ownership
0.048%
of shares outstanding
% of Portfolio
0.05%
of 13F equity value
Holder Rank
#110
of 260 holders
Holding Since
Mar 2023
3 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in AMPX Over Time
Shares Held
Position Value (USD)
Derivatives in AMPX
reported options exposure · as of Jun 30, 2026CallValue
$0
CallShares
0
PutValue
$5,336,100
PutShares
385,000
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 Electrical Equipment & Parts
Industrials · as of Jun 30, 2026Parallax Volatility Advisers, L.P. holds $1,369,728 across 3 Electrical Equipment & Parts names. AMPX ranks #1 (70.5% of the industry book) .
All Filings in AMPX
Export CSV
5 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $5,336,100 | 385,000 | Put | Sole | 2026-08-14 | |
| 2026-06-30 | $965,737 | 69,678 | Shares | Sole | 2026-08-14 | |
| 2026-03-31 | $687,500 | 40,777 | Shares | Sole | 2026-05-15 | |
| 2026-03-31 | $6,491,100 | 385,000 | Put | Sole | 2026-05-15 | |
| 2023-03-31 | $174,200 | 20,000 | Call | Sole | 2023-05-15 | |
| No filing history on record for this holder in this stock. | ||||||