Unusual Options Activity
VST Unusual Options Activity - Vistra
- Last active day
- August 20, 2026
- Active days (30d)
- 21
- Biggest recent print
- Put $140.0000 · $4.7M
AI summary
On August 20, 2026, unusual options activity was observed in Vistra Corp. (VST), with a total of four prints recorded. The overall premium for calls was approximately $1.46 million, while puts accounted for about $4.86 million, indicating a notable imbalance favoring put activity. The most significant print was a put option for the 140 strike, expiring on June 17, 2027, with a premium of approximately $4.74 million and a volume-to-open interest ratio of 4.1, suggesting considerable interest relative to existing positions. Additionally, a call option at the 145 strike expiring on August 21, 2026, had a premium of about $623,586 and a volume-to-open interest ratio of 8.0, indicating strong activity for this strike. Another call option for the same strike but expiring on September 18, 2026, showed a premium of around $831,875 with a volume-to-open interest ratio of 2.0. A smaller put was also noted at the 138 strike, expiring on August 28, 2026, with a premium of $118,800 and a volume-to-open interest ratio of 2.1.
AI-generated summary
VST was last active on August 20, 2026.
Prints on August 20, 2026
| Ticker | Side | Strike | Expiry | Vol/OI | Premium | IV | New |
|---|---|---|---|---|---|---|---|
| VST | Call | $145.0000 | 08/21/26 (2d) | 8.0× | $624K | 50% | |
| VST | Put | $140.0000 | 06/17/27 (302d) | 4.1× | $4.7M | 48% | |
| VST | Call | $145.0000 | 09/18/26 (30d) | 2.0× | $832K | 43% | |
| VST | Put | $138.0000 | 08/28/26 (9d) | 2.1× | $119K | 45% |
History
- 2026-08-204 prints$1.5M calls$4.9M puts
- 2026-08-195 prints$1.5M calls$5.0M puts
- 2026-08-184 prints$0K calls$3.7M puts
- 2026-08-175 prints$11.9M calls$9.8M puts
- 2026-08-142 prints$11.9M calls$6.2M puts
- 2026-08-115 prints$19.1M calls$83K puts
- 2026-08-107 prints$20.5M calls$2.0M puts
- 2026-08-0712 prints$6.4M calls$2.5M puts
- 2026-08-0610 prints$6.4M calls$565K puts
- 2026-08-056 prints$2.7M calls$1.8M puts
- 2026-08-046 prints$2.1M calls$1.8M puts
- 2026-08-033 prints$922K calls$0K puts
- 2026-07-312 prints$122K calls$26K puts
- 2026-07-301 prints$62K calls$0K puts
- 2026-07-295 prints$5.5M calls$144K puts
- 2026-07-285 prints$5.4M calls$188K puts
- 2026-07-271 prints$0K calls$44K puts
- 2026-07-241 prints$7.6M calls$0K puts
- 2026-07-232 prints$7.6M calls$122K puts
- 2026-07-221 prints$0K calls$122K puts
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