Altimmune ALT
$2.08 +$0.11 (+5.58%)
Market closed · Nov 6, 8:10 pm ET · Last extended-hours $2.07 -0.48%
Open$1.97
Prev close$1.97
Day range$1.95 – $2.10
Volume2.77M
Market cap$404.60M
P/E (TTM)–
Dividend yield–
Average implied volatility across the listed chain right now: 631%. 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 |
|---|---|---|---|---|---|---|
| 13 Nov 2026 | $2.00 | $0.15 | $0.05/$0.30 | 8 | 15 | 130% |
| 13 Nov 2026 | $2.50 | $0.01 | $0.00/$1.65 | 0 | 0 | 114% |
| 13 Nov 2026 | $1.50 | $0.55 | $0.30/$1.25 | 10 | 10 | 492% |
| 13 Nov 2026 | $3.00 | $0.00 | $0.00/$0.95 | 0 | 14 | 123% |
| 13 Nov 2026 | $1.00 | $1.09 | $0.75/$2.95 | 3 | 17 | 2,266% |
| 13 Nov 2026 | $3.50 | $0.00 | $0.00/$2.15 | 0 | 0 | 134% |
| 13 Nov 2026 | $0.50 | $1.53 | $1.30/$2.35 | 3 | 5 | 1,748% |
| 13 Nov 2026 | $4.00 | $0.00 | $0.00/$1.10 | 0 | 10 | 165% |
| 13 Nov 2026 | $5.00 | $0.00 | $0.00/$1.00 | 0 | 0 | 214% |
Puts
| Expiry | Strike | Last | Bid/Ask | Volume | Open interest | IV |
|---|---|---|---|---|---|---|
| 13 Nov 2026 | $2.00 | $0.15 | $0.00/$0.90 | 0 | 10 | 189% |
| 13 Nov 2026 | $2.50 | $0.54 | $0.05/$2.55 | 0 | 4 | 1,025% |
| 13 Nov 2026 | $1.50 | $0.01 | $0.00/$1.15 | 0 | 0 | 161% |
| 13 Nov 2026 | $3.00 | $1.08 | $0.55/$1.80 | 8 | 26 | 501% |
| 13 Nov 2026 | $1.00 | $0.00 | $0.00/$0.05 | 0 | 0 | 248% |
| 13 Nov 2026 | $3.50 | $1.53 | $1.20/$3.60 | 0 | 0 | 1,319% |
| 13 Nov 2026 | $0.50 | $0.00 | $0.00/$0.50 | 0 | 0 | 368% |
| 13 Nov 2026 | $4.00 | $2.03 | $1.60/$2.80 | 1 | 0 | 677% |
| 13 Nov 2026 | $5.00 | $3.05 | $2.70/$5.10 | 1 | 0 | 1,486% |
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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