Parallax Volatility Advisers, L.P.
Position in COST — Costco Wholesale Corp /New
CIK 1521001
San Francisco, CA
Position in COST
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$3,254,500
+$53,967 QoQ
Shares Held
3,479
+8.3% QoQ
Ownership
0.001%
of shares outstanding
% of Portfolio
0.16%
of 13F equity value
Holder Rank
#1,586
of 4,193 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in COST Over Time
Shares Held
Position Value (USD)
Derivatives in COST
reported options exposure · as of Jun 30, 2026CallValue
$7,951,495
CallShares
8,500
PutValue
$17,773,930
PutShares
19,000
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 Discount Stores
Consumer Defensive · as of Jun 30, 2026Parallax Volatility Advisers, L.P. holds $55,572,517 across 5 Discount Stores names. COST ranks #3 (5.9% of the industry book) .
All Filings in COST
Export CSV
50 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $17,773,930 | 19,000 | Put | Sole | 2026-08-14 | |
| 2026-06-30 | $3,254,500 | 3,479 | Shares | Sole | 2026-08-14 | |
| 2026-06-30 | $7,951,495 | 8,500 | Call | Sole | 2026-08-14 | |
| 2026-03-31 | $96,255,138 | 96,600 | Put | Sole | 2026-05-15 | |
| 2026-03-31 | $1,992,860 | 2,000 | Call | Sole | 2026-05-15 | |
| 2026-03-31 | $3,200,533 | 3,212 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $17,936,672 | 20,800 | Call | Sole | 2026-02-17 | |
| 2025-12-31 | $33,889,962 | 39,300 | Put | Sole | 2026-02-17 | |
| 2025-12-31 | $1,724 | 2 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $10,829,871 | 11,700 | Call | Sole | 2025-11-14 | |
| 2025-09-30 | $1,935,492 | 2,091 | Shares | Sole | 2025-11-14 | |
| 2025-09-30 | $34,525,999 | 37,300 | Put | Sole | 2025-11-14 | |
| 2025-06-30 | $3,108,411 | 3,140 | Shares | Sole | 2025-08-14 | |
| 2025-06-30 | $34,152,930 | 34,500 | Call | Sole | 2025-08-14 | |
| 2025-06-30 | $36,924,762 | 37,300 | Put | Sole | 2025-08-14 | |
| 2025-03-31 | $10,084,852 | 10,663 | Shares | Sole | 2025-05-15 | |
| 2025-03-31 | $45,113,706 | 47,700 | Put | Sole | 2025-05-15 | |
| 2025-03-31 | $154,067,562 | 162,900 | Call | Sole | 2025-05-15 | |
| 2024-12-31 | $12,644,526 | 13,800 | Call | Sole | 2025-02-14 | |
| 2024-12-31 | $70,094,655 | 76,500 | Put | Sole | 2025-02-14 | |
| 2024-12-31 | $23,061,599 | 25,169 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 | $8,333,288 | 9,400 | Put | Sole | 2024-11-14 | |
| 2024-09-30 | $5,116,993 | 5,772 | Shares | Sole | 2024-11-14 | |
| 2024-09-30 | $27,393,468 | 30,900 | Call | Sole | 2024-11-14 | |
| 2024-06-30 | $5,439,936 | 6,400 | Put | Sole | 2024-08-14 | |
| 2024-06-30 | $31,194,633 | 36,700 | Call | Sole | 2024-08-14 | |
| 2024-06-30 | $6,247,426 | 7,350 | Shares | Sole | 2024-08-14 | |
| 2024-03-31 | $11,722,080 | 16,000 | Put | Sole | 2024-05-15 | |
| 2024-03-31 | $52,309,782 | 71,400 | Call | Sole | 2024-05-15 | |
| 2023-12-31 | $26,471,848 | 40,104 | Shares | Sole | 2024-02-14 | |
| 2023-12-31 | $21,518,608 | 32,600 | Put | Sole | 2024-02-14 | |
| 2023-12-31 | $18,746,272 | 28,400 | Call | Sole | 2024-02-14 | |
| 2023-09-30 | $14,971,440 | 26,500 | Put | Sole | 2023-11-14 | |
| 2023-09-30 | $10,399,783 | 18,408 | Shares | Sole | 2023-11-14 | |
| 2023-09-30 | $10,112,784 | 17,900 | Call | Sole | 2023-11-14 | |
| 2023-06-30 | $40,701,528 | 75,600 | Put | Sole | 2023-08-14 | |
| 2023-06-30 | $1,431,014 | 2,658 | Shares | Sole | 2023-08-14 | |
| 2023-06-30 | $18,251,082 | 33,900 | Call | Sole | 2023-08-14 | |
| 2023-03-31 | $14,906 | 30 | Shares | Sole | 2023-05-15 | |
| 2023-03-31 | $65,686,214 | 132,200 | Call | Sole | 2023-05-15 | |
| 2023-03-31 | $25,240,996 | 50,800 | Put | Sole | 2023-05-15 | |
| 2022-12-31 | $43,550,100 | 95,400 | Put | Sole | 2023-02-27 | |
| 2022-12-31 | $71,396,600 | 156,400 | Call | Sole | 2023-02-27 | |
| 2022-12-31 | $27,390 | 60 | Shares | Sole | 2023-02-27 | |
| 2022-09-30 | $32,492,176 | 68,800 | Call | Sole | 2022-11-21 | |
| 2022-09-30 | $28,336 | 60 | Shares | Sole | 2022-11-21 | |
| 2022-09-30 | $17,710,125 | 37,500 | Put | Sole | 2022-11-21 | |
| 2022-06-30 | $63,935,952 | 133,400 | Put | Sole | 2022-08-17 | |
| 2022-06-30 | $132,233,352 | 275,900 | Call | Sole | 2022-08-17 | |
| 2022-03-31 | $51,020,310 | 88,600 | Call | Sole | 2022-05-16 | |
| No filing history on record for this holder in this stock. | ||||||