KMX · Carmax Inc

Track KMX — free Ask ALVIS about KMX

$58.88 +0.48 (+0.82%) At close · Jul 28

Market Cap

$8.35B

141.91M

Options Chain

15-min delayed Underlying $58.88 · at close Jul 28, 2026 Options Calculator

Positioning

Aug 21, 2026 · 23 days to expiry · 36 contracts

Put / call OI

0.90

Balanced positioning

Open interest

5,220

contracts outstanding

Volume

295

traded today

Max pain

$57.50

$1.38 below spot

ATM implied vol

42.8%

market's expected move

Open interest by strike

Calls Puts

32.5

37.5

42.5

47.5

52.5

57.5

62.5

67.5

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 23d Sep 18 51d Oct 16 79d Jan 15 170d Jan 21 541d Dec 15 870d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	—	114.6%	0.994	—		—	—	—	—	0
Call · $30 In the money Last — Breakeven — Implied vol 114.6% Delta 0.994 ≈99% ITM Gamma 0.001 Theta -0.009 Vega 0.002 Open interest 0 Model this call Put · $30 Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	2	—	—	$26.17		$0.05	-0.019	124.7%	1	1
Call · $32.5 In the money Last $26.17 Breakeven $58.67 Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this call Put · $32.5 Last $0.05 Breakeven $32.45 Implied vol 124.7% Delta -0.019 ≈2% ITM Gamma 0.003 Theta -0.019 Vega 0.006 Open interest 1 Model this put
1	1	—	—	$19.82		—	-0.024	113.9%	—	0
Call · $35 In the money Last $19.82 Breakeven $54.82 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this call Put · $35 Last — Breakeven — Implied vol 113.9% Delta -0.024 ≈2% ITM Gamma 0.003 Theta -0.02 Vega 0.012 Open interest 0 Model this put
0	—	108.4%	0.963	—		$0.22	-0.027	100.3%	1	2
Call · $37.5 In the money Last — Breakeven — Implied vol 108.4% Delta 0.963 ≈96% ITM Gamma 0.005 Theta -0.031 Vega 0.012 Open interest 0 Model this call Put · $37.5 Last $0.22 Breakeven $37.28 Implied vol 100.3% Delta -0.027 ≈3% ITM Gamma 0.004 Theta -0.02 Vega 0.012 Open interest 2 Model this put
10	10	61.8%	0.995	$10.50		$0.07	-0.021	79.9%	23	37
Call · $40 In the money Last $10.50 Breakeven $50.50 Implied vol 61.8% Delta 0.995 ≈100% ITM Gamma 0.001 Theta -0.007 Vega 0.003 Open interest 10 Model this call Put · $40 Last $0.07 Breakeven $39.93 Implied vol 79.9% Delta -0.021 ≈2% ITM Gamma 0.004 Theta -0.013 Vega 0.006 Open interest 37 Model this put
10	10	—	—	$15.74		$0.05	-0.019	65.6%	8	258
Call · $42.5 In the money Last $15.74 Breakeven $58.24 Implied vol — Delta — Gamma — Theta — Vega — Open interest 10 Model this call Put · $42.5 Last $0.05 Breakeven $42.45 Implied vol 65.6% Delta -0.019 ≈2% ITM Gamma 0.005 Theta -0.01 Vega 0.006 Open interest 258 Model this put
0	—	0.2%	1	—		$0.12	-0.048	68.4%	1	312
Call · $45 In the money Last — Breakeven — Implied vol 0.2% Delta 1 ≈100% ITM Gamma 0 Theta -0.004 Vega 0 Open interest 0 Model this call Put · $45 Last $0.12 Breakeven $44.88 Implied vol 68.4% Delta -0.048 ≈5% ITM Gamma 0.01 Theta -0.022 Vega 0.013 Open interest 312 Model this put
12	5	0.2%	1	$11.56		$0.30	-0.048	54.1%	37	44
Call · $47.5 In the money Last $11.56 Breakeven $59.06 Implied vol 0.2% Delta 1 ≈100% ITM Gamma 0 Theta -0.005 Vega 0 Open interest 12 Model this call Put · $47.5 Last $0.30 Breakeven $47.20 Implied vol 54.1% Delta -0.048 ≈5% ITM Gamma 0.012 Theta -0.017 Vega 0.013 Open interest 44 Model this put
104	2	64.9%	0.863	$9.60		$0.40	-0.087	50.4%	1	342
Call · $50 In the money Last $9.60 Breakeven $59.60 Implied vol 64.9% Delta 0.863 ≈86% ITM Gamma 0.023 Theta -0.049 Vega 0.036 Open interest 104 Model this call Put · $50 Last $0.40 Breakeven $49.60 Implied vol 50.4% Delta -0.087 ≈9% ITM Gamma 0.021 Theta -0.025 Vega 0.024 Open interest 342 Model this put
455	4	66.2%	0.785	$6.74		$0.75	-0.157	48.9%	2	243
Call · $52.5 In the money Last $6.74 Breakeven $59.24 Implied vol 66.2% Delta 0.785 ≈78% ITM Gamma 0.03 Theta -0.066 Vega 0.048 Open interest 455 Model this call Put · $52.5 Last $0.75 Breakeven $51.75 Implied vol 48.9% Delta -0.157 ≈16% ITM Gamma 0.033 Theta -0.036 Vega 0.037 Open interest 243 Model this put
259	9	46.1%	0.747	$5.15		$1.30	-0.253	46%	51	183
Call · $55 In the money Last $5.15 Breakeven $60.15 Implied vol 46.1% Delta 0.747 ≈75% ITM Gamma 0.046 Theta -0.051 Vega 0.05 Open interest 259 Model this call Put · $55 Last $1.30 Breakeven $53.70 Implied vol 46% Delta -0.253 ≈25% ITM Gamma 0.047 Theta -0.045 Vega 0.05 Open interest 183 Model this put
276	10	42.5%	0.619	$3.25		$1.95	-0.38	41.1%	5	300
Call · $57.5 In the money Last $3.25 Breakeven $60.75 Implied vol 42.5% Delta 0.619 ≈62% ITM Gamma 0.06 Theta -0.055 Vega 0.058 Open interest 276 Model this call Put · $57.5 Last $1.95 Breakeven $55.55 Implied vol 41.1% Delta -0.38 ≈38% ITM Gamma 0.062 Theta -0.048 Vega 0.058 Open interest 300 Model this put
Underlying $58.88
1k	5	42%	0.464	$1.90		$3.00	-0.536	43.5%	26	746
Call · $60 Last $1.90 Breakeven $61.90 Implied vol 42% Delta 0.464 ≈46% ITM Gamma 0.063 Theta -0.056 Vega 0.06 Open interest 1k Model this call Put · $60 In the money Last $3.00 Breakeven $57.00 Implied vol 43.5% Delta -0.536 ≈54% ITM Gamma 0.062 Theta -0.052 Vega 0.06 Open interest 746 Model this put
100	5	42.4%	0.321	$1.09		$6.80	-0.684	42.3%	1	1
Call · $62.5 Last $1.09 Breakeven $63.59 Implied vol 42.4% Delta 0.321 ≈32% ITM Gamma 0.057 Theta -0.05 Vega 0.054 Open interest 100 Model this call Put · $62.5 In the money Last $6.80 Breakeven $55.70 Implied vol 42.3% Delta -0.684 ≈68% ITM Gamma 0.057 Theta -0.044 Vega 0.054 Open interest 1 Model this put
348	14	42.3%	0.203	$0.75		$7.34	-0.81	41.3%	1	2
Call · $65 Last $0.75 Breakeven $65.75 Implied vol 42.3% Delta 0.203 ≈20% ITM Gamma 0.045 Theta -0.039 Vega 0.043 Open interest 348 Model this call Put · $65 In the money Last $7.34 Breakeven $57.66 Implied vol 41.3% Delta -0.81 ≈81% ITM Gamma 0.046 Theta -0.032 Vega 0.042 Open interest 2 Model this put
15	1	42.8%	0.122	$0.30		—	-0.854	48.8%	—	0
Call · $67.5 Last $0.30 Breakeven $67.80 Implied vol 42.8% Delta 0.122 ≈12% ITM Gamma 0.031 Theta -0.028 Vega 0.029 Open interest 15 Model this call Put · $67.5 In the money Last — Breakeven — Implied vol 48.8% Delta -0.854 ≈85% ITM Gamma 0.034 Theta -0.032 Vega 0.039 Open interest 0 Model this put
118	3	45.4%	0.076	$0.23		$13.66	-0.888	53.4%	2	1
Call · $70 Last $0.23 Breakeven $70.23 Implied vol 45.4% Delta 0.076 ≈8% ITM Gamma 0.021 Theta -0.021 Vega 0.017 Open interest 118 Model this call Put · $70 In the money Last $13.66 Breakeven $56.34 Implied vol 53.4% Delta -0.888 ≈89% ITM Gamma 0.026 Theta -0.028 Vega 0.028 Open interest 1 Model this put
36	4	55.3%	0.051	$0.13		$22.00	-0.944	58.9%	50	0
Call · $75 Last $0.13 Breakeven $75.13 Implied vol 55.3% Delta 0.051 ≈5% ITM Gamma 0.013 Theta -0.019 Vega 0.018 Open interest 36 Model this call Put · $75 In the money Last $22.00 Breakeven $53.00 Implied vol 58.9% Delta -0.944 ≈94% ITM Gamma 0.015 Theta -0.017 Vega 0.016 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 1170010 CUSIP 143130102 13F (30d) 147 filings 115 filers Visit website Investor relations