Your Best Stock

Fortinet FTNT

US equityMarket cap rank #117Software - InfrastructureCybersecurity
$179.66
+$0.92 (+0.51%)
Market open · Sep 24, 1:10 pm ET
After hours $178.96 +0.12%
Open$178.70
Prev close$178.74
Day range$176.78 – $181.36
Volume1.71M
Market cap$131.82B
P/E (TTM)63.5
Dividend yield

Average implied volatility across the listed chain right now: 44%. 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.

Calls

ExpiryStrikeLastBid/AskVolumeOpen interestIV
25 Sep 2026 $180.00 $0.74 $0.54/$0.99 14 369 46%
25 Sep 2026 $177.50 $0.90 $0.86/$1.06 63 576 43%
25 Sep 2026 $182.50 $0.42 $0.40/$0.46 288 305 45%
25 Sep 2026 $175.00 $1.62 $1.26/$1.50 20 217 42%
25 Sep 2026 $185.00 $0.34 $0.24/$0.43 18 250 47%
25 Sep 2026 $172.50 $2.15 $1.84/$2.20 45 368 42%
25 Sep 2026 $187.50 $0.22 $0.16/$0.32 1 18 48%
25 Sep 2026 $170.00 $3.12 $2.68/$3.10 16 157 41%
25 Sep 2026 $190.00 $0.15 $0.09/$0.23 13 52 49%
25 Sep 2026 $167.50 $4.45 $3.80/$4.20 38 27 41%
25 Sep 2026 $192.50 $0.31 $0.06/$0.31 2 0 54%
25 Sep 2026 $165.00 $5.19 $4.95/$6.05 7 55 43%
25 Sep 2026 $195.00 $0.34 $0.00/$0.21 0 149 65%
25 Sep 2026 $162.50 $7.10 $6.60/$7.90 4 5 44%
25 Sep 2026 $197.50 $0.00 $0.00/$0.51 0 0 0%

Puts

ExpiryStrikeLastBid/AskVolumeOpen interestIV
25 Sep 2026 $180.00 $8.83 $11.65/$13.50 0 0 36%
25 Sep 2026 $177.50 $7.12 $9.20/$11.15 0 14 33%
25 Sep 2026 $182.50 $10.86 $13.75/$16.00 0 0 33%
25 Sep 2026 $175.00 $5.45 $7.90/$9.35 0 81 42%
25 Sep 2026 $185.00 $12.91 $16.35/$18.70 0 0 45%
25 Sep 2026 $172.50 $7.50 $6.05/$7.20 4 34 40%
25 Sep 2026 $187.50 $15.30 $18.70/$21.25 0 0 47%
25 Sep 2026 $170.00 $5.53 $4.95/$5.45 9 55 42%
25 Sep 2026 $190.00 $17.68 $20.70/$23.70 0 0 0%
25 Sep 2026 $167.50 $2.27 $3.55/$4.05 0 10 42%
25 Sep 2026 $192.50 $20.08 $23.35/$26.15 0 0 0%
25 Sep 2026 $165.00 $2.65 $2.48/$2.77 33 97 42%
25 Sep 2026 $195.00 $22.50 $26.05/$28.40 0 0 0%
25 Sep 2026 $162.50 $1.59 $1.63/$1.91 9 13 42%
25 Sep 2026 $197.50 $0.00 $28.35/$31.10 0 0 0%

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.

Scroll to Top