EFX · Equifax Inc

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$172.54 +5.82 (+3.49%) At close · Jul 24

Market Cap

$20.27B

117.48M

Options Chain

15-min delayed Underlying $172.54 · at close Jul 24, 2026 Options Calculator

Positioning

Aug 21, 2026 · 26 days to expiry · 46 contracts

Put / call OI

1.60

Put-heavy positioning

Open interest

4,979

contracts outstanding

Volume

401

traded today

Max pain

$170.00

$2.54 below spot

ATM implied vol

43.8%

market's expected move

Open interest by strike

Calls Puts

110

115

120

125

130

135

140

145

150

155

160

165

170

175

180

185

190

195

200

210

220

230

240

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 26d Sep 18 54d Oct 16 82d Dec 18 145d Jan 15 173d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
3	1	—	—	$51.10		—	-0.024	92.2%	—	0
Call · $110 In the money Last $51.10 Breakeven $161.10 Implied vol — Delta — Gamma — Theta — Vega — Open interest 3 Model this call Put · $110 Last — Breakeven — Implied vol 92.2% Delta -0.024 ≈2% ITM Gamma 0.001 Theta -0.046 Vega 0.037 Open interest 0 Model this put
0	—	—	—	—		$0.25	-0.026	83.9%	1	2
Call · $115 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $115 Last $0.25 Breakeven $114.75 Implied vol 83.9% Delta -0.026 ≈3% ITM Gamma 0.002 Theta -0.045 Vega 0.038 Open interest 2 Model this put
0	—	—	—	—		$0.08	-0.056	93.7%	4	134
Call · $120 In the money Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $120 Last $0.08 Breakeven $119.92 Implied vol 93.7% Delta -0.056 ≈6% ITM Gamma 0.003 Theta -0.093 Vega 0.067 Open interest 134 Model this put
0	—	0.1%	0.999	—		—	-0.076	92%	—	0
Call · $125 In the money Last — Breakeven — Implied vol 0.1% Delta 0.999 ≈100% ITM Gamma 0 Theta -0.007 Vega 0 Open interest 0 Model this call Put · $125 Last — Breakeven — Implied vol 92% Delta -0.076 ≈8% ITM Gamma 0.003 Theta -0.115 Vega 0.069 Open interest 0 Model this put
0	—	0.1%	0.999	—		$0.40	-0.029	58.9%	12	14
Call · $130 In the money Last — Breakeven — Implied vol 0.1% Delta 0.999 ≈100% ITM Gamma 0 Theta -0.007 Vega 0 Open interest 0 Model this call Put · $130 Last $0.40 Breakeven $129.60 Implied vol 58.9% Delta -0.029 ≈3% ITM Gamma 0.002 Theta -0.034 Vega 0.04 Open interest 14 Model this put
1	1	43.4%	0.985	$37.20		$0.43	-0.084	71.4%	3	4
Call · $135 In the money Last $37.20 Breakeven $172.20 Implied vol 43.4% Delta 0.985 ≈99% ITM Gamma 0.002 Theta -0.021 Vega 0.02 Open interest 1 Model this call Put · $135 Last $0.43 Breakeven $134.57 Implied vol 71.4% Delta -0.084 ≈8% ITM Gamma 0.005 Theta -0.096 Vega 0.071 Open interest 4 Model this put
0	—	44.6%	0.965	—		$0.95	-0.092	63.1%	3	276
Call · $140 In the money Last — Breakeven — Implied vol 44.6% Delta 0.965 ≈97% ITM Gamma 0.004 Theta -0.037 Vega 0.042 Open interest 0 Model this call Put · $140 Last $0.95 Breakeven $139.05 Implied vol 63.1% Delta -0.092 ≈9% ITM Gamma 0.006 Theta -0.091 Vega 0.073 Open interest 276 Model this put
0	—	46%	0.931	—		$0.77	-0.074	47.3%	11	197
Call · $145 In the money Last — Breakeven — Implied vol 46% Delta 0.931 ≈93% ITM Gamma 0.006 Theta -0.061 Vega 0.073 Open interest 0 Model this call Put · $145 Last $0.77 Breakeven $144.23 Implied vol 47.3% Delta -0.074 ≈7% ITM Gamma 0.006 Theta -0.057 Vega 0.074 Open interest 197 Model this put
15	1	46.6%	0.886	$22.86		$1.35	-0.123	48.7%	8	344
Call · $150 In the money Last $22.86 Breakeven $172.86 Implied vol 46.6% Delta 0.886 ≈89% ITM Gamma 0.009 Theta -0.088 Vega 0.075 Open interest 15 Model this call Put · $150 Last $1.35 Breakeven $148.65 Implied vol 48.7% Delta -0.123 ≈12% ITM Gamma 0.009 Theta -0.087 Vega 0.113 Open interest 344 Model this put
186	1	43.1%	0.839	$19.00		$2.00	-0.178	46.9%	6	1.6k
Call · $155 In the money Last $19.00 Breakeven $174.00 Implied vol 43.1% Delta 0.839 ≈84% ITM Gamma 0.012 Theta -0.1 Vega 0.115 Open interest 186 Model this call Put · $155 Last $2.00 Breakeven $153.00 Implied vol 46.9% Delta -0.178 ≈18% ITM Gamma 0.012 Theta -0.106 Vega 0.115 Open interest 1.6k Model this put
39	18	43.8%	0.762	$10.80		$3.28	-0.249	46.4%	1	19
Call · $160 In the money Last $10.80 Breakeven $170.80 Implied vol 43.8% Delta 0.762 ≈76% ITM Gamma 0.015 Theta -0.127 Vega 0.153 Open interest 39 Model this call Put · $160 Last $3.28 Breakeven $156.72 Implied vol 46.4% Delta -0.249 ≈25% ITM Gamma 0.015 Theta -0.127 Vega 0.153 Open interest 19 Model this put
128	3	42.5%	0.679	$14.90		$4.64	-0.327	44.8%	9	55
Call · $165 In the money Last $14.90 Breakeven $179.90 Implied vol 42.5% Delta 0.679 ≈68% ITM Gamma 0.018 Theta -0.143 Vega 0.156 Open interest 128 Model this call Put · $165 Last $4.64 Breakeven $160.36 Implied vol 44.8% Delta -0.327 ≈33% ITM Gamma 0.018 Theta -0.142 Vega 0.158 Open interest 55 Model this put
48	1	43.8%	0.578	$9.20		$6.13	-0.422	44.2%	1	74
Call · $170 In the money Last $9.20 Breakeven $179.20 Implied vol 43.8% Delta 0.578 ≈58% ITM Gamma 0.019 Theta -0.157 Vega 0.182 Open interest 48 Model this call Put · $170 Last $6.13 Breakeven $163.87 Implied vol 44.2% Delta -0.422 ≈42% ITM Gamma 0.019 Theta -0.148 Vega 0.182 Open interest 74 Model this put
Underlying $172.54
154	16	43.3%	0.481	$6.50		$11.26	-0.519	44.3%	1	4
Call · $175 Last $6.50 Breakeven $181.50 Implied vol 43.3% Delta 0.481 ≈48% ITM Gamma 0.02 Theta -0.158 Vega 0.185 Open interest 154 Model this call Put · $175 In the money Last $11.26 Breakeven $163.74 Implied vol 44.3% Delta -0.519 ≈52% ITM Gamma 0.02 Theta -0.15 Vega 0.185 Open interest 4 Model this put
186	1	46%	0.393	$5.70		$11.14	-0.612	45%	109	1
Call · $180 Last $5.70 Breakeven $185.70 Implied vol 46% Delta 0.393 ≈39% ITM Gamma 0.018 Theta -0.162 Vega 0.188 Open interest 186 Model this call Put · $180 In the money Last $11.14 Breakeven $168.86 Implied vol 45% Delta -0.612 ≈61% ITM Gamma 0.019 Theta -0.148 Vega 0.187 Open interest 1 Model this put
350	35	43.4%	0.301	$3.56		—	-0.704	43.1%	—	0
Call · $185 Last $3.56 Breakeven $188.56 Implied vol 43.4% Delta 0.301 ≈30% ITM Gamma 0.017 Theta -0.137 Vega 0.168 Open interest 350 Model this call Put · $185 In the money Last — Breakeven — Implied vol 43.1% Delta -0.704 ≈70% ITM Gamma 0.018 Theta -0.124 Vega 0.167 Open interest 0 Model this put
165	8	45%	0.234	$2.82		$18.60	-0.763	46.1%	121	222
Call · $190 Last $2.82 Breakeven $192.82 Implied vol 45% Delta 0.234 ≈23% ITM Gamma 0.015 Theta -0.125 Vega 0.13 Open interest 165 Model this call Put · $190 In the money Last $18.60 Breakeven $171.40 Implied vol 46.1% Delta -0.763 ≈76% ITM Gamma 0.015 Theta -0.119 Vega 0.13 Open interest 222 Model this put
13	1	45%	0.174	$2.00		—	-0.821	46.4%	—	0
Call · $195 Last $2.00 Breakeven $197.00 Implied vol 45% Delta 0.174 ≈17% ITM Gamma 0.012 Theta -0.104 Vega 0.132 Open interest 13 Model this call Put · $195 In the money Last — Breakeven — Implied vol 46.4% Delta -0.821 ≈82% ITM Gamma 0.013 Theta -0.099 Vega 0.13 Open interest 0 Model this put
399	1	42.7%	0.112	$1.20		$27.10	-0.862	48.3%	12	110
Call · $200 Last $1.20 Breakeven $201.20 Implied vol 42.7% Delta 0.112 ≈11% ITM Gamma 0.01 Theta -0.073 Vega 0.09 Open interest 399 Model this call Put · $200 In the money Last $27.10 Breakeven $172.90 Implied vol 48.3% Delta -0.862 ≈86% ITM Gamma 0.01 Theta -0.086 Vega 0.088 Open interest 110 Model this put
198	1	47.7%	0.071	$0.25		—	-0.928	49.6%	—	0
Call · $210 Last $0.25 Breakeven $210.25 Implied vol 47.7% Delta 0.071 ≈7% ITM Gamma 0.006 Theta -0.058 Vega 0.053 Open interest 198 Model this call Put · $210 In the money Last — Breakeven — Implied vol 49.6% Delta -0.928 ≈93% ITM Gamma 0.007 Theta -0.053 Vega 0.051 Open interest 0 Model this put
25	6	52.2%	0.048	$0.05		—	-0.94	56.9%	—	0
Call · $220 Last $0.05 Breakeven $220.05 Implied vol 52.2% Delta 0.048 ≈5% ITM Gamma 0.004 Theta -0.046 Vega 0.055 Open interest 25 Model this call Put · $220 In the money Last — Breakeven — Implied vol 56.9% Delta -0.94 ≈94% ITM Gamma 0.005 Theta -0.051 Vega 0.051 Open interest 0 Model this put
1	1	59.1%	0.04	$0.25		—	-0.956	61.8%	—	0
Call · $230 Last $0.25 Breakeven $230.25 Implied vol 59.1% Delta 0.04 ≈4% ITM Gamma 0.003 Theta -0.045 Vega 0.056 Open interest 1 Model this call Put · $230 In the money Last — Breakeven — Implied vol 61.8% Delta -0.956 ≈96% ITM Gamma 0.004 Theta -0.042 Vega 0.049 Open interest 0 Model this put
6	3	66.1%	0.036	$0.05		—	-0.96	69.3%	—	0
Call · $240 Last $0.05 Breakeven $240.05 Implied vol 66.1% Delta 0.036 ≈4% ITM Gamma 0.003 Theta -0.047 Vega 0.028 Open interest 6 Model this call Put · $240 In the money Last — Breakeven — Implied vol 69.3% Delta -0.96 ≈96% ITM Gamma 0.003 Theta -0.044 Vega 0.049 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 33185 CUSIP 294429105 13F (30d) 184 filings 182 filers Visit website Investor relations