Fortinet FTNT
$118.84 −$3.67 (-3.00%)
Market closed · Nov 6, 9:50 pm ET · Last extended-hours $119.00 +0.13%
Open$126.46
Prev close$122.51
Day range$118.62 – $126.46
Volume8.03M
Market cap$87.31B
P/E (TTM)38.8
Dividend yield–
Average implied volatility across the listed chain right now: 64%. 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 | $119.00 | $6.60 | $3.35/$4.15 | 0 | 0 | 66% |
| 13 Nov 2026 | $118.00 | $7.22 | $3.75/$4.90 | 0 | 0 | 67% |
| 13 Nov 2026 | $120.00 | $3.30 | $2.80/$3.65 | 26 | 0 | 65% |
| 13 Nov 2026 | $117.00 | $5.30 | $4.25/$5.10 | 1 | 0 | 64% |
| 13 Nov 2026 | $121.00 | $3.00 | $2.37/$3.15 | 31 | 4 | 64% |
| 13 Nov 2026 | $116.00 | $6.24 | $4.95/$6.50 | 1 | 0 | 72% |
| 13 Nov 2026 | $122.00 | $2.22 | $2.13/$2.34 | 56 | 0 | 61% |
| 13 Nov 2026 | $115.00 | $6.55 | $5.45/$6.85 | 9 | 9 | 69% |
| 13 Nov 2026 | $123.00 | $1.92 | $1.62/$2.13 | 34 | 0 | 61% |
| 13 Nov 2026 | $114.00 | $10.11 | $6.30/$7.90 | 0 | 0 | 75% |
| 13 Nov 2026 | $124.00 | $1.75 | $1.45/$1.91 | 4 | 4 | 63% |
| 13 Nov 2026 | $113.00 | $10.94 | $6.95/$8.65 | 0 | 0 | 75% |
| 13 Nov 2026 | $125.00 | $1.35 | $1.19/$1.40 | 16 | 18 | 60% |
| 13 Nov 2026 | $112.00 | $11.80 | $7.65/$9.75 | 0 | 0 | 79% |
| 13 Nov 2026 | $126.00 | $1.18 | $0.86/$1.33 | 164 | 1 | 60% |
Puts
| Expiry | Strike | Last | Bid/Ask | Volume | Open interest | IV |
|---|---|---|---|---|---|---|
| 13 Nov 2026 | $119.00 | $3.63 | $3.20/$3.80 | 7 | 53 | 60% |
| 13 Nov 2026 | $118.00 | $2.64 | $2.80/$3.70 | 31 | 18 | 64% |
| 13 Nov 2026 | $120.00 | $3.70 | $3.70/$4.65 | 39 | 146 | 62% |
| 13 Nov 2026 | $117.00 | $2.70 | $2.38/$2.80 | 6 | 7 | 61% |
| 13 Nov 2026 | $121.00 | $4.27 | $3.85/$4.90 | 7 | 13 | 56% |
| 13 Nov 2026 | $116.00 | $1.84 | $2.01/$2.57 | 2 | 26 | 63% |
| 13 Nov 2026 | $122.00 | $4.51 | $4.25/$5.70 | 4 | 8 | 55% |
| 13 Nov 2026 | $115.00 | $1.75 | $1.66/$2.37 | 59 | 60 | 64% |
| 13 Nov 2026 | $123.00 | $5.02 | $5.05/$6.80 | 7 | 8 | 60% |
| 13 Nov 2026 | $114.00 | $1.46 | $1.48/$1.83 | 7 | 2 | 64% |
| 13 Nov 2026 | $124.00 | $5.82 | $5.60/$7.05 | 6 | 11 | 54% |
| 13 Nov 2026 | $113.00 | $1.10 | $1.30/$1.50 | 2 | 6 | 64% |
| 13 Nov 2026 | $125.00 | $6.02 | $6.55/$7.95 | 119 | 97 | 57% |
| 13 Nov 2026 | $112.00 | $0.88 | $0.78/$1.44 | 0 | 25 | 64% |
| 13 Nov 2026 | $126.00 | $5.01 | $6.75/$9.30 | 1 | 14 | 57% |
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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