Options market record
ACMR options flowcalls and puts bought each day.
On Oct 23, 2026, traders bought 313 ACMR call contracts ($70.1K) and 98 put contracts ($42K). Calls were — and puts were — their respective 20-day medians. The underlying closed at $50.55 and 30-day implied volatility was 92.6%. On the call-buy top 10 on 4 of 486 trading days since Nov 11, 2024.
Each point is one trading day since Nov 11, 2024. Latest rankings · Earnings history
Daily contracts bought
Call contracts: min 21, max 17.17K, latest 313. Put contracts: min 4, max 7.95K, latest 98.
30-day implied volatility
30-day IV: min 49.9%, max 126.3%, latest 92.6%.
Days in a top-10 list
Ranked by contracts bought today compared with the stock's own median over the previous 20 trading days.
| Date | Call-buy rank | Put-buy rank | Call vs normal | Put vs normal |
|---|---|---|---|---|
| Jun 18, 2026 | 8 | — | 9.3× | — |
| Jun 12, 2026 | 8 | — | 11.4× | — |
| Jun 5, 2026 | 4 | — | 9.5× | — |
| Feb 26, 2025 | 6 | — | 5.9× | — |
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