Unusual Options Activity
COST Unusual Options Activity - Costco Wholesale
- Last active day
- August 21, 2026
- Active days (30d)
- 21
- Biggest recent print
- Put $1000.0000 · $4.1M
AI summary
On August 21, 2026, unusual options activity was observed in Costco Wholesale Corporation (COST). A total of three prints were recorded, with a significant disparity between call and put premiums. The call premium amounted to $109,844, while the put premium was notably higher at $4,138,608. The most prominent print was a put option for the strike price of $1000, expiring on the same day, which accounted for the majority of the put premium. This option had a volume-to-open interest (Vol/OI) ratio of 1.5. Additionally, two call options were noted: one with a strike price of $1000, expiring on August 28, 2026, which generated a premium of $80,793 and had a Vol/OI ratio of 3.6, and another call at a strike price of $1280, expiring on September 11, 2026, with a premium of $29,051 and a Vol/OI ratio of 3.9. Over the past 30 days, there have been 21 active days for COST options.
AI-generated summary
Prints on August 21, 2026
| Ticker | Side | Strike | Expiry | Vol/OI | Premium | IV | New |
|---|---|---|---|---|---|---|---|
| COST | Call | $1000.0000 | 08/28/26 (6d) | 3.6× | $81K | 23% | |
| COST | Call | $1280.0000 | 09/11/26 (22d) | 3.9× | $29K | 41% | |
| COST | Put | $1000.0000 | 08/21/26 (1d) | 1.5× | $4.1M | 98% |
History
- 2026-08-213 prints$110K calls$4.1M puts
- 2026-08-204 prints$17.3M calls$4.4M puts
- 2026-08-193 prints$17.3M calls$616K puts
- 2026-08-181 prints$0K calls$359K puts
- 2026-08-141 prints$42K calls$0K puts
- 2026-08-131 prints$42K calls$0K puts
- 2026-08-122 prints$3.2M calls$0K puts
- 2026-08-112 prints$3.2M calls$0K puts
- 2026-08-102 prints$782K calls$0K puts
- 2026-08-074 prints$836K calls$202K puts
- 2026-08-064 prints$813K calls$267K puts
- 2026-08-055 prints$1.1M calls$65K puts
- 2026-08-044 prints$339K calls$74K puts
- 2026-08-036 prints$146K calls$210K puts
- 2026-07-318 prints$387K calls$169K puts
- 2026-07-303 prints$116K calls$0K puts
- 2026-07-295 prints$351K calls$199K puts
- 2026-07-288 prints$319K calls$414K puts
- 2026-07-276 prints$162K calls$237K puts
- 2026-07-247 prints$770K calls$49K puts
Related tickers