Options market record
GMAB options flowcalls and puts bought each day.
On Nov 12, 2026, traders bought 18.07K GMAB call contracts ($6.8M) and 1.56K put contracts ($257.5K). Calls were 15.1× and puts were — their respective 20-day medians. The underlying closed at $51.74 and 30-day implied volatility was 43.5%. On the call-buy top 10 on 1 of 500 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 0, max 24.58K, latest 18.07K. Put contracts: min 0, max 6.06K, latest 1.56K.
30-day implied volatility
30-day IV: min 32.6%, max 104.8%, latest 43.5%.
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 |
|---|---|---|---|---|
| Nov 12, 2026 | 3 | — | 15.1× | — |
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