VERX · Vertex, Inc.

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$13.24 +0.60 (+4.75%) At close · Jul 28

Market Cap

$2.05B

161.82M

Options Chain

15-min delayed Underlying $13.24 · at close Jul 28, 2026 Options Calculator

Positioning

Aug 21, 2026 · 23 days to expiry · 44 contracts

Put / call OI

3.05

Put-heavy positioning

Open interest

454

contracts outstanding

Volume

294

traded today

Max pain

$14.00

$0.76 above spot

ATM implied vol

128.3%

market's expected move

Open interest by strike

Calls Puts

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 23d Sep 18 51d Dec 18 142d Mar 19 233d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	—	277.1%	0.98	—		$0.10	—	—	2	3
Call · $4 In the money Last — Breakeven — Implied vol 277.1% Delta 0.98 ≈98% ITM Gamma 0.005 Theta -0.01 Vega 0.002 Open interest 0 Model this call Put · $4 Last $0.10 Breakeven $3.90 Implied vol — Delta — Gamma — Theta — Vega — Open interest 3 Model this put
0	—	227.6%	0.976	—		$0.10	—	—	4	6
Call · $5 In the money Last — Breakeven — Implied vol 227.6% Delta 0.976 ≈98% ITM Gamma 0.007 Theta -0.01 Vega 0.002 Open interest 0 Model this call Put · $5 Last $0.10 Breakeven $4.90 Implied vol — Delta — Gamma — Theta — Vega — Open interest 6 Model this put
0	—	187.9%	0.971	—		$0.10	—	—	4	8
Call · $6 In the money Last — Breakeven — Implied vol 187.9% Delta 0.971 ≈97% ITM Gamma 0.01 Theta -0.009 Vega 0.002 Open interest 0 Model this call Put · $6 Last $0.10 Breakeven $5.90 Implied vol — Delta — Gamma — Theta — Vega — Open interest 8 Model this put
0	—	0.2%	1	—		—	—	—	—	0
Call · $7 In the money Last — Breakeven — Implied vol 0.2% Delta 1 ≈100% ITM Gamma 0 Theta -0.001 Vega 0 Open interest 0 Model this call Put · $7 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	106.3%	0.979	—		—	-0.15	307.9%	—	0
Call · $8 In the money Last — Breakeven — Implied vol 106.3% Delta 0.979 ≈98% ITM Gamma 0.014 Theta -0.005 Vega 0.001 Open interest 0 Model this call Put · $8 Last — Breakeven — Implied vol 307.9% Delta -0.15 ≈15% ITM Gamma 0.023 Theta -0.051 Vega 0.008 Open interest 0 Model this put
0	—	155.5%	0.88	—		$0.65	-0.127	161.9%	2	2
Call · $9 In the money Last — Breakeven — Implied vol 155.5% Delta 0.88 ≈88% ITM Gamma 0.039 Theta -0.023 Vega 0.007 Open interest 0 Model this call Put · $9 Last $0.65 Breakeven $8.35 Implied vol 161.9% Delta -0.127 ≈13% ITM Gamma 0.038 Theta -0.024 Vega 0.007 Open interest 2 Model this put
0	—	143.9%	0.83	—		$0.54	-0.134	114%	62	224
Call · $10 In the money Last — Breakeven — Implied vol 143.9% Delta 0.83 ≈83% ITM Gamma 0.053 Theta -0.027 Vega 0.008 Open interest 0 Model this call Put · $10 Last $0.54 Breakeven $9.46 Implied vol 114% Delta -0.134 ≈13% ITM Gamma 0.057 Theta -0.017 Vega 0.008 Open interest 224 Model this put
0	—	92.8%	0.817	—		$0.20	-0.216	113.2%	1	38
Call · $11 In the money Last — Breakeven — Implied vol 92.8% Delta 0.817 ≈82% ITM Gamma 0.086 Theta -0.019 Vega 0.008 Open interest 0 Model this call Put · $11 Last $0.20 Breakeven $10.80 Implied vol 113.2% Delta -0.216 ≈22% ITM Gamma 0.078 Theta -0.023 Vega 0.01 Open interest 38 Model this put
12	7	142.5%	0.674	$1.43		$0.77	-0.327	148.6%	1	26
Call · $12 In the money Last $1.43 Breakeven $13.43 Implied vol 142.5% Delta 0.674 ≈67% ITM Gamma 0.076 Theta -0.037 Vega 0.012 Open interest 12 Model this call Put · $12 Last $0.77 Breakeven $11.23 Implied vol 148.6% Delta -0.327 ≈33% ITM Gamma 0.073 Theta -0.038 Vega 0.012 Open interest 26 Model this put
12	6	121.4%	0.584	$0.40		—	-0.413	135.1%	—	0
Call · $13 In the money Last $0.40 Breakeven $13.40 Implied vol 121.4% Delta 0.584 ≈58% ITM Gamma 0.097 Theta -0.035 Vega 0.013 Open interest 12 Model this call Put · $13 Last — Breakeven — Implied vol 135.1% Delta -0.413 ≈41% ITM Gamma 0.087 Theta -0.037 Vega 0.013 Open interest 0 Model this put
Underlying $13.24
13	1	147.2%	0.516	$0.62		—	-0.529	106.9%	—	0
Call · $14 Last $0.62 Breakeven $14.62 Implied vol 147.2% Delta 0.516 ≈52% ITM Gamma 0.081 Theta -0.043 Vega 0.013 Open interest 13 Model this call Put · $14 In the money Last — Breakeven — Implied vol 106.9% Delta -0.529 ≈53% ITM Gamma 0.112 Theta -0.03 Vega 0.014 Open interest 0 Model this put
31	10	86.1%	0.322	$0.50		$4.20	-0.673	88.6%	111	35
Call · $15 Last $0.50 Breakeven $15.50 Implied vol 86.1% Delta 0.322 ≈32% ITM Gamma 0.125 Theta -0.022 Vega 0.012 Open interest 31 Model this call Put · $15 In the money Last $4.20 Breakeven $10.80 Implied vol 88.6% Delta -0.673 ≈67% ITM Gamma 0.123 Theta -0.022 Vega 0.012 Open interest 35 Model this put
16	6	133.8%	0.35	$0.50		—	-0.744	97.5%	—	0
Call · $16 Last $0.50 Breakeven $16.50 Implied vol 133.8% Delta 0.35 ≈35% ITM Gamma 0.083 Theta -0.036 Vega 0.013 Open interest 16 Model this call Put · $16 In the money Last — Breakeven — Implied vol 97.5% Delta -0.744 ≈74% ITM Gamma 0.101 Theta -0.022 Vega 0.01 Open interest 0 Model this put
28	27	109.5%	0.224	$0.17		—	-0.799	102.7%	—	0
Call · $17 Last $0.17 Breakeven $17.17 Implied vol 109.5% Delta 0.224 ≈22% ITM Gamma 0.082 Theta -0.024 Vega 0.01 Open interest 28 Model this call Put · $17 In the money Last — Breakeven — Implied vol 102.7% Delta -0.799 ≈80% ITM Gamma 0.083 Theta -0.02 Vega 0.01 Open interest 0 Model this put
0	—	116.6%	0.185	—		—	-0.824	114.8%	—	0
Call · $18 Last — Breakeven — Implied vol 116.6% Delta 0.185 ≈18% ITM Gamma 0.069 Theta -0.023 Vega 0.01 Open interest 0 Model this call Put · $18 In the money Last — Breakeven — Implied vol 114.8% Delta -0.824 ≈82% ITM Gamma 0.069 Theta -0.02 Vega 0.01 Open interest 0 Model this put
0	—	137.3%	0.193	—		—	-0.807	138.2%	—	0
Call · $19 Last — Breakeven — Implied vol 137.3% Delta 0.193 ≈19% ITM Gamma 0.06 Theta -0.027 Vega 0.011 Open interest 0 Model this call Put · $19 In the money Last — Breakeven — Implied vol 138.2% Delta -0.807 ≈81% ITM Gamma 0.06 Theta -0.026 Vega 0.01 Open interest 0 Model this put
0	—	—	—	—		$8.80	-0.831	145.1%	50	0
Call · $20 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $20 In the money Last $8.80 Breakeven $11.20 Implied vol 145.1% Delta -0.831 ≈83% ITM Gamma 0.053 Theta -0.025 Vega 0.007 Open interest 0 Model this put
0	—	—	—	—		—	—	—	—	0
Call · $21 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $21 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	—	—	—		—	-0.908	137.6%	—	0
Call · $22 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $22 In the money Last — Breakeven — Implied vol 137.6% Delta -0.908 ≈91% ITM Gamma 0.038 Theta -0.015 Vega 0.007 Open interest 0 Model this put
0	—	—	—	—		—	-0.912	145.6%	—	0
Call · $23 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $23 In the money Last — Breakeven — Implied vol 145.6% Delta -0.912 ≈91% ITM Gamma 0.035 Theta -0.015 Vega 0.004 Open interest 0 Model this put
0	—	—	—	—		—	-0.915	153.1%	—	0
Call · $24 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $24 In the money Last — Breakeven — Implied vol 153.1% Delta -0.915 ≈91% ITM Gamma 0.032 Theta -0.016 Vega 0.004 Open interest 0 Model this put
0	—	—	—	—		—	-0.918	160.4%	—	0
Call · $25 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $25 In the money Last — Breakeven — Implied vol 160.4% Delta -0.918 ≈92% ITM Gamma 0.03 Theta -0.016 Vega 0.005 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 1806837 CUSIP 92538J106 13F (30d) 36 filings 36 filers Visit website Investor relations