Ceribell CBLL
$26.59 +$0.58 (+2.23%)
Market closed · Nov 7, 6:40 am ET · Last extended-hours $26.59 0.00%
Open$25.67
Prev close$26.01
Day range$24.87 – $26.79
Volume436.4K
Market cap$1.03B
P/E (TTM)–
Dividend yield–
Average implied volatility across the listed chain right now: 116%. Implied volatility measures how big a price swing the options market is pricing in — there is no fixed “normal” level, it varies a lot by stock.
Open interest by strike
Nearest listed expiry only. Calls above the line, puts below — clusters mark strikes where the market has built up the most open positions.
Implied volatility by strike
The “volatility smile”: strikes far from the current price often price in richer implied volatility than at-the-money strikes.
Calls
| Expiry | Strike | Last | Bid/Ask | Volume | Open interest | IV |
|---|---|---|---|---|---|---|
| 20 Nov 2026 | $25.00 | $2.60 | $1.95/$3.90 | 75 | 77 | 106% |
| 20 Nov 2026 | $30.00 | $0.48 | $0.25/$0.50 | 0 | 106 | 71% |
| 20 Nov 2026 | $22.50 | $4.49 | $2.25/$6.00 | 0 | 0 | 35% |
| 20 Nov 2026 | $20.00 | $6.60 | $4.60/$8.60 | 0 | 0 | 0% |
| 20 Nov 2026 | $35.00 | $0.40 | $0.00/$2.30 | 0 | 0 | 124% |
| 20 Nov 2026 | $17.50 | $8.91 | $7.10/$11.10 | 0 | 0 | 0% |
| 20 Nov 2026 | $15.00 | $11.32 | $9.60/$13.60 | 0 | 0 | 0% |
| 20 Nov 2026 | $12.50 | $13.79 | $12.10/$16.10 | 0 | 0 | 0% |
Puts
| Expiry | Strike | Last | Bid/Ask | Volume | Open interest | IV |
|---|---|---|---|---|---|---|
| 20 Nov 2026 | $25.00 | $1.40 | $0.00/$2.05 | 0 | 5 | 111% |
| 20 Nov 2026 | $30.00 | $4.25 | $2.35/$5.90 | 0 | 0 | 96% |
| 20 Nov 2026 | $22.50 | $0.70 | $0.00/$1.25 | 0 | 2 | 120% |
| 20 Nov 2026 | $20.00 | $0.31 | $0.00/$2.30 | 0 | 2 | 129% |
| 20 Nov 2026 | $35.00 | $9.19 | $7.40/$10.60 | 0 | 0 | 143% |
| 20 Nov 2026 | $17.50 | $0.12 | $0.00/$2.15 | 0 | 0 | 140% |
| 20 Nov 2026 | $15.00 | $0.04 | $0.00/$2.15 | 0 | 0 | 151% |
| 20 Nov 2026 | $12.50 | $0.01 | $0.00/$2.15 | 0 | 8 | 163% |
Open interest = contracts currently outstanding (not yet closed out). Higher open interest generally means a strike/expiry is more actively traded and easier to get in and out of.
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