Unusual Options Activity
SLS Unusual Options Activity - SELLAS Life Sciences
- Last active day
- August 21, 2026
- Active days (30d)
- 20
- Biggest recent print
- Call $20.0000 · $4.1M
AI summary
On August 21, 2026, notable options activity was observed in SELLAS Life Sciences Group, Inc. (SLS), with a total of seven prints. The call premium significantly outweighed the put premium, totaling approximately $7.3 million for calls compared to $44,400 for puts. The most prominent print was a call option for a strike price of $20.00, expiring on October 16, 2026, with a premium of $4,051,500 and a volume/open interest ratio of 12.4, indicating strong activity relative to existing positions. Additional notable calls included a $30.00 strike expiring on the same date, with a premium of $2,710,310 and a Vol/OI ratio of 2.0. Other calls with shorter expirations included strikes at $16.00, $17.00, and $14.50, each showing varying levels of interest. The single put option printed was a $13.00 strike expiring on August 28, 2026, with a premium of $44,400 and a Vol/OI ratio of 3.3. Overall, the day's activity reflected a strong preference for calls over puts.
AI-generated summary
Prints on August 21, 2026
| Ticker | Side | Strike | Expiry | Vol/OI | Premium | IV | New |
|---|---|---|---|---|---|---|---|
| SLS | Call | $20.0000 | 10/16/26 (55d) | 12.4× | $4.1M | 213% | |
| SLS | Call | $16.0000 | 08/28/26 (6d) | 7.2× | $179K | 181% | |
| SLS | Put | $13.0000 | 08/28/26 (6d) | 3.3× | $44K | 171% | |
| SLS | Call | $30.0000 | 10/16/26 (55d) | 2.0× | $2.7M | 214% | |
| SLS | Call | $17.0000 | 08/28/26 (6d) | 2.6× | $44K | 184% | |
| SLS | Call | $14.5000 | 08/21/26 (0d) | 2.0× | $206K | 625% | |
| SLS | Call | $20.0000 | 08/28/26 (6d) | 1.8× | $106K | 214% |
History
- 2026-08-217 prints$7.3M calls$44K puts
- 2026-08-202 prints$81K calls$74K puts
- 2026-08-192 prints$81K calls$74K puts
- 2026-08-171 prints$37K calls$0K puts
- 2026-08-143 prints$128K calls$0K puts
- 2026-08-138 prints$37K calls$8.6M puts
- 2026-08-128 prints$50K calls$8.6M puts
- 2026-08-112 prints$50K calls$38K puts
- 2026-08-102 prints$36K calls$38K puts
- 2026-08-071 prints$36K calls$0K puts
- 2026-08-046 prints$223K calls$1.9M puts
- 2026-08-038 prints$497K calls$1.9M puts
- 2026-07-313 prints$344K calls$0K puts
- 2026-07-304 prints$307K calls$0K puts
- 2026-07-294 prints$12.2M calls$0K puts
- 2026-07-281 prints$12.0M calls$0K puts
- 2026-07-274 prints$314K calls$162K puts
- 2026-07-246 prints$719K calls$162K puts
- 2026-07-232 prints$365K calls$36K puts
- 2026-07-221 prints$0K calls$36K puts
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