Unusual Options Activity
SNDK Unusual Options Activity - Sandisk - When-Issued
- Last active day
- August 21, 2026
- Active days (30d)
- 23
- Biggest recent print
- Call $1600.0000 · $14.8M
AI summary
On August 21, 2026, Sandisk Corporation (SNDK) experienced significant options activity, with a total call premium of approximately $56.8 million compared to a put premium of around $22.8 million. This indicates a notable imbalance favoring calls. The activity included 40 prints, with several large transactions highlighted. The most significant print was for the SNDK Call at a strike price of 1590, which had a premium of about $4.2 million and a volume/open interest (Vol/OI) ratio of 13.7. Other notable calls included those at strikes of 1630, 1610, and 1620, with premiums of $223,750, $163,999, and $220,080, respectively. The put options saw less activity, with the largest being a 1590 strike put at a premium of $75,170 and a Vol/OI of 11.5. Additionally, a 1650 strike call expiring on August 28, 2026, recorded a premium of approximately $8.2 million, further contributing to the day's activity.
AI-generated summary
Prints on August 21, 2026
| Ticker | Side | Strike | Expiry | Vol/OI | Premium | IV | New |
|---|---|---|---|---|---|---|---|
| SNDK | Call | $1590.0000 | 08/21/26 (0d) | 13.7× | $4.2M | 4% | |
| SNDK | Call | $1630.0000 | 08/21/26 (0d) | 12.9× | $224K | 19% | |
| SNDK | Call | $1610.0000 | 08/21/26 (0d) | 12.0× | $164K | 10% | |
| SNDK | Put | $1590.0000 | 08/21/26 (0d) | 11.5× | $75K | 5% | |
| SNDK | Call | $1620.0000 | 08/21/26 (0d) | 9.3× | $220K | 13% | |
| SNDK | Put | $1580.0000 | 08/21/26 (0d) | 7.8× | $120K | 11% | |
| SNDK | Put | $800.0000 | 08/28/26 (7d) | 8.0× | $27K | 150% | |
| SNDK | Call | $1650.0000 | 08/28/26 (6d) | 5.1× | $8.2M | 81% | |
| SNDK | Put | $1610.0000 | 08/21/26 (0d) | 5.0× | $2.4M | 9% | |
| SNDK | Call | $1750.0000 | 08/28/26 (8d) | 3.4× | $5.4M | 87% | |
| SNDK | Call | $1640.0000 | 08/21/26 (0d) | 4.8× | $43K | 22% | |
| SNDK | Put | $1620.0000 | 08/21/26 (1d) | 3.1× | $6.2M | 91% | |
| SNDK | Put | $1570.0000 | 08/21/26 (0d) | 4.5× | $47K | 17% | |
| SNDK | Call | $1565.0000 | 08/21/26 (1d) | 3.0× | $3.0M | 95% | |
| SNDK | Call | $1650.0000 | 08/21/26 (0d) | 3.9× | $82K | 26% | |
| SNDK | Call | $1580.0000 | 08/21/26 (0d) | 2.9× | $2.8M | 15% | |
| SNDK | Call | $1600.0000 | 08/28/26 (6d) | 2.6× | $14.8M | 80% | |
| SNDK | Put | $1600.0000 | 08/21/26 (0d) | 2.8× | $3.6M | 3% | |
| SNDK | Call | $1600.0000 | 08/21/26 (0d) | 2.8× | $715K | 5% | |
| SNDK | Put | $1550.0000 | 08/21/26 (0d) | 3.1× | $49K | 23% | |
| SNDK | Call | $1700.0000 | 08/28/26 (6d) | 2.1× | $4.8M | 82% | |
| SNDK | Put | $1440.0000 | 08/21/26 (1d) | 2.9× | $82K | 98% | |
| SNDK | Call | $1720.0000 | 08/28/26 (8d) | 2.1× | $2.1M | 87% | |
| SNDK | Call | $1720.0000 | 08/21/26 (1d) | 2.3× | $412K | 97% | |
| SNDK | Call | $1560.0000 | 08/21/26 (1d) | 1.7× | $4.6M | 96% | |
| SNDK | Call | $1680.0000 | 08/21/26 (1d) | 1.9× | $1.0M | 95% | |
| SNDK | Put | $1470.0000 | 08/21/26 (1d) | 2.2× | $113K | 94% | |
| SNDK | Call | $1750.0000 | 08/21/26 (1d) | 1.9× | $695K | 99% | |
| SNDK | Put | $1600.0000 | 08/28/26 (6d) | 1.6× | $5.1M | 81% | |
| SNDK | Call | $1710.0000 | 08/21/26 (1d) | 1.9× | $430K | 96% | |
| SNDK | Put | $1500.0000 | 08/21/26 (1d) | 1.7× | $1.7M | 92% | |
| SNDK | Call | $1740.0000 | 08/21/26 (1d) | 2.0× | $183K | 99% | |
| SNDK | Call | $1700.0000 | 08/21/26 (0d) | 2.1× | $95K | 43% | |
| SNDK | Put | $1550.0000 | 08/28/26 (6d) | 1.6× | $2.8M | 78% | |
| SNDK | Call | $1570.0000 | 08/21/26 (0d) | 1.5× | $2.2M | 30% | |
| SNDK | Put | $1350.0000 | 08/28/26 (6d) | 1.7× | $273K | 84% | |
| SNDK | Call | $1800.0000 | 08/21/26 (1d) | 1.6× | $465K | 108% | |
| SNDK | Put | $1480.0000 | 08/21/26 (1d) | 1.7× | $139K | 94% | |
| SNDK | Put | $1530.0000 | 08/21/26 (0d) | 1.9× | $27K | 37% | |
| SNDK | Put | $1475.0000 | 08/21/26 (1d) | 1.6× | $78K | 94% |
History
- 2026-08-2140 prints$56.8M calls$22.8M puts
- 2026-08-2048 prints$182.8M calls$74.2M puts
- 2026-08-1962 prints$161.0M calls$237.6M puts
- 2026-08-1890 prints$336.8M calls$350.0M puts
- 2026-08-1775 prints$505.6M calls$159.1M puts
- 2026-08-14117 prints$789.3M calls$78.2M puts
- 2026-08-1394 prints$584.2M calls$109.8M puts
- 2026-08-1247 prints$161.4M calls$64.2M puts
- 2026-08-1134 prints$154.7M calls$45.0M puts
- 2026-08-1031 prints$135.1M calls$45.8M puts
- 2026-08-0787 prints$99.7M calls$496.9M puts
- 2026-08-06109 prints$203.4M calls$587.3M puts
- 2026-08-0554 prints$175.0M calls$121.4M puts
- 2026-08-0430 prints$271.3M calls$49.5M puts
- 2026-08-0320 prints$143.7M calls$30.7M puts
- 2026-07-3182 prints$142.7M calls$184.6M puts
- 2026-07-3094 prints$384.9M calls$261.3M puts
- 2026-07-2957 prints$74.0M calls$283.8M puts
- 2026-07-2846 prints$102.1M calls$174.2M puts
- 2026-07-2728 prints$93.8M calls$173.2M puts
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