Parallax Volatility Advisers, L.P.
Position in FIX — Comfort Systems USA Inc
CIK 1521001
San Francisco, CA
Position in FIX
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$1,208,989
+$1,208,989 QoQ
Shares Held
610
Ownership
0.002%
of shares outstanding
% of Portfolio
0.06%
of 13F equity value
Holder Rank
#730
of 1,343 holders
Holding Since
Dec 2025
2 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Derivatives in FIX
reported options exposure · as of Jun 30, 2026CallValue
$1,981,950
CallShares
1,000
PutValue
$2,576,535
PutShares
1,300
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 Engineering & Construction
Industrials · as of Jun 30, 2026Parallax Volatility Advisers, L.P. holds $1,612,955 across 2 Engineering & Construction names. FIX ranks #1 (75.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | FIX |
Comfort Systems USA Inc
This page
|
610 | $1,208,989 | |
| 2 | DY |
Dycom Industries Inc
|
799 | $403,966 |
All Filings in FIX
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4 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $1,981,950 | 1,000 | Call | Sole | 2026-08-14 | |
| 2026-06-30 | $2,576,535 | 1,300 | Put | Sole | 2026-08-14 | |
| 2026-06-30 | $1,208,989 | 610 | Shares | Sole | 2026-08-14 | |
| 2025-12-31 | $5,039,766 | 5,400 | Put | Sole | 2026-02-17 | |
| No filing history on record for this holder in this stock. | ||||||