FIVN · Five9, Inc.

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$27.51 -0.15 (-0.54%) At close · Jul 31

Market Cap

$2.11B

76.56M

Options Chain

15-min delayed Underlying $27.51 · at close Jul 31, 2026 Options Calculator

Positioning

Aug 21, 2026 · 20 days to expiry · 24 contracts

Put / call OI

0.24

Call-heavy positioning

Open interest

12,343

contracts outstanding

Volume

289

traded today

Max pain

$22.50

$5.01 below spot

ATM implied vol

95.2%

market's expected move

Open interest by strike

Calls Puts

12.5

17.5

22.5

27.5

32.5

37.5

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 20d Sep 18 48d Oct 16 76d Jan 15 167d Dec 17 503d Jan 21 538d Dec 15 867d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	—	—	—	—		$0.14	-0.019	185%	1	396
Call · $12.5 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $12.5 Last $0.14 Breakeven $12.36 Implied vol 185% Delta -0.019 ≈2% ITM Gamma 0.004 Theta -0.014 Vega 0.004 Open interest 396 Model this put
4	2	174.9%	0.956	$9.13		$0.20	-0.057	192.1%	13	144
Call · $15 In the money Last $9.13 Breakeven $24.13 Implied vol 174.9% Delta 0.956 ≈96% ITM Gamma 0.008 Theta -0.028 Vega 0.005 Open interest 4 Model this call Put · $15 Last $0.20 Breakeven $14.80 Implied vol 192.1% Delta -0.057 ≈6% ITM Gamma 0.009 Theta -0.035 Vega 0.008 Open interest 144 Model this put
15	1	0.2%	1	$7.60		$0.10	-0.041	122%	10	398
Call · $17.5 In the money Last $7.60 Breakeven $25.10 Implied vol 0.2% Delta 1 ≈100% ITM Gamma 0 Theta -0.002 Vega 0 Open interest 15 Model this call Put · $17.5 Last $0.10 Breakeven $17.40 Implied vol 122% Delta -0.041 ≈4% ITM Gamma 0.011 Theta -0.017 Vega 0.005 Open interest 398 Model this put
933	2	129.6%	0.888	$7.90		$0.25	-0.086	111.1%	11	350
Call · $20 In the money Last $7.90 Breakeven $27.90 Implied vol 129.6% Delta 0.888 ≈89% ITM Gamma 0.023 Theta -0.042 Vega 0.014 Open interest 933 Model this call Put · $20 Last $0.25 Breakeven $19.75 Implied vol 111.1% Delta -0.086 ≈9% ITM Gamma 0.022 Theta -0.028 Vega 0.01 Open interest 350 Model this put
1.2k	1	93%	0.851	$5.51		$0.65	-0.159	97.9%	10	117
Call · $22.5 In the money Last $5.51 Breakeven $28.01 Implied vol 93% Delta 0.851 ≈85% ITM Gamma 0.039 Theta -0.037 Vega 0.015 Open interest 1.2k Model this call Put · $22.5 Last $0.65 Breakeven $21.85 Implied vol 97.9% Delta -0.159 ≈16% ITM Gamma 0.038 Theta -0.038 Vega 0.015 Open interest 117 Model this put
2.6k	5	99.7%	0.705	$4.00		$1.48	-0.292	96.3%	6	868
Call · $25 In the money Last $4.00 Breakeven $29.00 Implied vol 99.7% Delta 0.705 ≈70% ITM Gamma 0.054 Theta -0.058 Vega 0.021 Open interest 2.6k Model this call Put · $25 Last $1.48 Breakeven $23.52 Implied vol 96.3% Delta -0.292 ≈29% ITM Gamma 0.056 Theta -0.053 Vega 0.021 Open interest 868 Model this put
2.2k	14	96%	0.55	$2.40		$2.40	-0.452	94.3%	4	75
Call · $27.5 In the money Last $2.40 Breakeven $29.90 Implied vol 96% Delta 0.55 ≈55% ITM Gamma 0.065 Theta -0.064 Vega 0.025 Open interest 2.2k Model this call Put · $27.5 Last $2.40 Breakeven $25.10 Implied vol 94.3% Delta -0.452 ≈45% ITM Gamma 0.066 Theta -0.06 Vega 0.025 Open interest 75 Model this put
Underlying $27.51
2.2k	32	96.3%	0.397	$1.45		$3.50	-0.61	93.5%	5	6
Call · $30 Last $1.45 Breakeven $31.45 Implied vol 96.3% Delta 0.397 ≈40% ITM Gamma 0.063 Theta -0.062 Vega 0.023 Open interest 2.2k Model this call Put · $30 In the money Last $3.50 Breakeven $26.50 Implied vol 93.5% Delta -0.61 ≈61% ITM Gamma 0.065 Theta -0.057 Vega 0.023 Open interest 6 Model this put
589	73	95.9%	0.266	$1.00		$5.90	-0.739	94.9%	1	52
Call · $32.5 Last $1.00 Breakeven $33.50 Implied vol 95.9% Delta 0.266 ≈27% ITM Gamma 0.054 Theta -0.052 Vega 0.019 Open interest 589 Model this call Put · $32.5 In the money Last $5.90 Breakeven $26.60 Implied vol 94.9% Delta -0.739 ≈74% ITM Gamma 0.055 Theta -0.048 Vega 0.019 Open interest 52 Model this put
29	47	97.7%	0.176	$0.57		—	-0.829	96.9%	—	0
Call · $35 Last $0.57 Breakeven $35.57 Implied vol 97.7% Delta 0.176 ≈18% ITM Gamma 0.041 Theta -0.041 Vega 0.019 Open interest 29 Model this call Put · $35 In the money Last — Breakeven — Implied vol 96.9% Delta -0.829 ≈83% ITM Gamma 0.042 Theta -0.038 Vega 0.019 Open interest 0 Model this put
140	3	100.4%	0.119	$0.30		—	-0.947	78.9%	—	0
Call · $37.5 Last $0.30 Breakeven $37.80 Implied vol 100.4% Delta 0.119 ≈12% ITM Gamma 0.03 Theta -0.032 Vega 0.013 Open interest 140 Model this call Put · $37.5 In the money Last — Breakeven — Implied vol 78.9% Delta -0.947 ≈95% ITM Gamma 0.024 Theta -0.012 Vega 0.007 Open interest 0 Model this put
48	48	115.2%	0.107	$0.25		—	-0.974	82.4%	—	0
Call · $40 Last $0.25 Breakeven $40.25 Implied vol 115.2% Delta 0.107 ≈11% ITM Gamma 0.025 Theta -0.034 Vega 0.014 Open interest 48 Model this call Put · $40 In the money Last — Breakeven — Implied vol 82.4% Delta -0.974 ≈97% ITM Gamma 0.015 Theta -0.006 Vega 0.003 Open interest 0 Model this put

About this data

Greeks, implied volatility, open interest and the last price come from the latest daily snapshot and are 15-minute delayed. Bid and ask are not included on this plan.

In-the-money strikes are tinted, deepening toward the money, and the bar beside each open-interest figure scales to the heaviest strike shown. Max pain is the listed strike where the most open interest would expire worthless — a positioning reference, not a forecast.

Key facts CIK 1288847 CUSIP 338307101 13F (30d) 82 filings 58 filers Visit website Investor relations