Unusual Options Activity
CSGP Unusual Options Activity - CoStar
- Last active day
- September 3, 2026
- Active days (30d)
- 10
- Biggest recent print
- Call $35.0000 · $498K
AI summary
On September 3, 2026, CoStar Group, Inc. (CSGP) experienced notable options activity with a single print involving a call option. The transaction involved a call option with a strike price of $35, set to expire on December 18, 2026. The premium for this call was reported at $498,250, indicating a significant investment in this particular option. The volume to open interest ratio for this trade was 8.9, suggesting a higher level of trading activity relative to existing open positions. In the past 30 days, CSGP has seen options activity on 10 active days, reflecting ongoing interest in its options market. Notably, there were no put options traded on this day, highlighting a one-sided focus on call options in this instance.
AI-generated summary
CSGP was last active on September 3, 2026.
Prints on September 3, 2026
| Ticker | Side | Strike | Expiry | Vol/OI | Premium | IV | New |
|---|---|---|---|---|---|---|---|
| CSGP | Call | $35.0000 | 12/18/26 (107d) | 8.9× | $498K | 53% |
History
- 2026-09-031 prints$498K calls$0K puts
- 2026-09-021 prints$498K calls$0K puts
- 2026-08-211 prints$0K calls$380K puts
- 2026-08-201 prints$0K calls$380K puts
- 2026-08-132 prints$609K calls$722K puts
- 2026-08-123 prints$609K calls$972K puts
- 2026-08-111 prints$0K calls$250K puts
- 2026-08-101 prints$0K calls$271K puts
- 2026-08-071 prints$0K calls$271K puts
- 2026-08-041 prints$0K calls$347K puts
- 2026-08-031 prints$0K calls$347K puts
- 2026-07-311 prints$0K calls$154K puts
- 2026-07-301 prints$0K calls$154K puts
- 2026-07-282 prints$278K calls$115K puts
- 2026-07-272 prints$278K calls$115K puts
- 2026-07-221 prints$0K calls$473K puts
- 2026-07-211 prints$0K calls$473K puts
- 2026-06-301 prints$95K calls$0K puts
- 2026-06-291 prints$95K calls$0K puts
- 2026-06-172 prints$138K calls$488K puts
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