TMDX · TransMedics Group, Inc.

Track TMDX — free Ask ALVIS about TMDX

$76.08 -1.92 (-2.46%)

Market Cap

$2.58B

34.56M

Options Chain

15-min delayed Underlying $76.08 · today Options Calculator

Positioning

Aug 21, 2026 · 22 days to expiry · 32 contracts

Put / call OI

2.03

Put-heavy positioning

Open interest

17,891

contracts outstanding

Volume

353

traded today

Max pain

$75.00

$1.08 below spot

ATM implied vol

98.1%

market's expected move

Open interest by strike

Calls Puts

100

105

110

115

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 22d Sep 18 50d Oct 16 78d Dec 18 141d Jan 15 169d Jan 21 540d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	—	151.6%	0.972	—		$0.10	-0.015	131%	3	110
Call · $40 In the money Last — Breakeven — Implied vol 151.6% Delta 0.972 ≈97% ITM Gamma 0.002 Theta -0.044 Vega 0.013 Open interest 0 Model this call Put · $40 Last $0.10 Breakeven $39.90 Implied vol 131% Delta -0.015 ≈2% ITM Gamma 0.002 Theta -0.021 Vega 0.007 Open interest 110 Model this put
4	4	108.4%	0.983	$29.67		$0.25	-0.026	119.8%	6	124
Call · $45 In the money Last $29.67 Breakeven $74.67 Implied vol 108.4% Delta 0.983 ≈98% ITM Gamma 0.002 Theta -0.024 Vega 0.007 Open interest 4 Model this call Put · $45 Last $0.25 Breakeven $44.75 Implied vol 119.8% Delta -0.026 ≈3% ITM Gamma 0.003 Theta -0.03 Vega 0.014 Open interest 124 Model this put
35	3	81.4%	0.986	$24.10		$0.60	-0.051	116.1%	2	601
Call · $50 In the money Last $24.10 Breakeven $74.10 Implied vol 81.4% Delta 0.986 ≈99% ITM Gamma 0.002 Theta -0.017 Vega 0.008 Open interest 35 Model this call Put · $50 Last $0.60 Breakeven $49.40 Implied vol 116.1% Delta -0.051 ≈5% ITM Gamma 0.005 Theta -0.052 Vega 0.026 Open interest 601 Model this put
0	—	109.4%	0.91	—		$1.05	-0.097	114.1%	9	258
Call · $55 In the money Last — Breakeven — Implied vol 109.4% Delta 0.91 ≈91% ITM Gamma 0.008 Theta -0.081 Vega 0.027 Open interest 0 Model this call Put · $55 Last $1.05 Breakeven $53.95 Implied vol 114.1% Delta -0.097 ≈10% ITM Gamma 0.008 Theta -0.083 Vega 0.028 Open interest 258 Model this put
4	3	94.2%	0.873	$18.40		$1.84	-0.148	104.4%	13	2.3k
Call · $60 In the money Last $18.40 Breakeven $78.40 Implied vol 94.2% Delta 0.873 ≈87% ITM Gamma 0.012 Theta -0.089 Vega 0.043 Open interest 4 Model this call Put · $60 Last $1.84 Breakeven $58.16 Implied vol 104.4% Delta -0.148 ≈15% ITM Gamma 0.012 Theta -0.101 Vega 0.043 Open interest 2.3k Model this put
19	1	103%	0.771	$12.20		$3.08	-0.222	98.7%	11	5.6k
Call · $65 In the money Last $12.20 Breakeven $77.20 Implied vol 103% Delta 0.771 ≈77% ITM Gamma 0.016 Theta -0.137 Vega 0.059 Open interest 19 Model this call Put · $65 Last $3.08 Breakeven $61.92 Implied vol 98.7% Delta -0.222 ≈22% ITM Gamma 0.016 Theta -0.124 Vega 0.059 Open interest 5.6k Model this put
69	6	98.6%	0.678	$9.75		$4.70	-0.315	90.2%	12	2.7k
Call · $70 In the money Last $9.75 Breakeven $79.75 Implied vol 98.6% Delta 0.678 ≈68% ITM Gamma 0.02 Theta -0.156 Vega 0.07 Open interest 69 Model this call Put · $70 Last $4.70 Breakeven $65.30 Implied vol 90.2% Delta -0.315 ≈31% ITM Gamma 0.022 Theta -0.136 Vega 0.07 Open interest 2.7k Model this put
118	6	95.6%	0.568	$6.80		$7.20	-0.431	100.7%	1	229
Call · $75 In the money Last $6.80 Breakeven $81.80 Implied vol 95.6% Delta 0.568 ≈57% ITM Gamma 0.022 Theta -0.165 Vega 0.073 Open interest 118 Model this call Put · $75 Last $7.20 Breakeven $67.80 Implied vol 100.7% Delta -0.431 ≈43% ITM Gamma 0.021 Theta -0.166 Vega 0.073 Open interest 229 Model this put
Underlying $76.08
3.1k	27	98.8%	0.464	$4.86		$9.10	-0.559	84.5%	6	69
Call · $80 Last $4.86 Breakeven $84.86 Implied vol 98.8% Delta 0.464 ≈46% ITM Gamma 0.022 Theta -0.17 Vega 0.075 Open interest 3.1k Model this call Put · $80 In the money Last $9.10 Breakeven $70.90 Implied vol 84.5% Delta -0.559 ≈56% ITM Gamma 0.025 Theta -0.138 Vega 0.076 Open interest 69 Model this put
342	12	97.9%	0.365	$3.30		$15.61	-0.636	98.2%	1	13
Call · $85 Last $3.30 Breakeven $88.30 Implied vol 97.9% Delta 0.365 ≈37% ITM Gamma 0.021 Theta -0.159 Vega 0.068 Open interest 342 Model this call Put · $85 In the money Last $15.61 Breakeven $69.39 Implied vol 98.2% Delta -0.636 ≈64% ITM Gamma 0.021 Theta -0.152 Vega 0.068 Open interest 13 Model this put
584	66	94.4%	0.266	$2.20		$16.60	-0.716	100.7%	5	13
Call · $90 Last $2.20 Breakeven $92.20 Implied vol 94.4% Delta 0.266 ≈27% ITM Gamma 0.019 Theta -0.136 Vega 0.054 Open interest 584 Model this call Put · $90 In the money Last $16.60 Breakeven $73.40 Implied vol 100.7% Delta -0.716 ≈72% ITM Gamma 0.018 Theta -0.141 Vega 0.07 Open interest 13 Model this put
341	106	90.2%	0.184	$1.55		$21.55	-0.814	91.5%	1	5
Call · $95 Last $1.55 Breakeven $96.55 Implied vol 90.2% Delta 0.184 ≈18% ITM Gamma 0.016 Theta -0.103 Vega 0.055 Open interest 341 Model this call Put · $95 In the money Last $21.55 Breakeven $73.45 Implied vol 91.5% Delta -0.814 ≈81% ITM Gamma 0.016 Theta -0.098 Vega 0.055 Open interest 5 Model this put
532	9	91.9%	0.135	$1.02		$25.70	-0.866	93%	15	15
Call · $100 Last $1.02 Breakeven $101.02 Implied vol 91.9% Delta 0.135 ≈13% ITM Gamma 0.013 Theta -0.085 Vega 0.038 Open interest 532 Model this call Put · $100 In the money Last $25.70 Breakeven $74.30 Implied vol 93% Delta -0.866 ≈87% ITM Gamma 0.013 Theta -0.079 Vega 0.038 Open interest 15 Model this put
452	4	99.3%	0.114	$0.60		—	-0.866	107.7%	—	0
Call · $105 Last $0.60 Breakeven $105.60 Implied vol 99.3% Delta 0.114 ≈11% ITM Gamma 0.01 Theta -0.082 Vega 0.039 Open interest 452 Model this call Put · $105 In the money Last — Breakeven — Implied vol 107.7% Delta -0.866 ≈87% ITM Gamma 0.011 Theta -0.092 Vega 0.038 Open interest 0 Model this put
236	9	98.8%	0.078	$0.60		—	-0.896	110.1%	—	0
Call · $110 Last $0.60 Breakeven $110.60 Implied vol 98.8% Delta 0.078 ≈8% ITM Gamma 0.008 Theta -0.062 Vega 0.023 Open interest 236 Model this call Put · $110 In the money Last — Breakeven — Implied vol 110.1% Delta -0.896 ≈90% ITM Gamma 0.009 Theta -0.078 Vega 0.039 Open interest 0 Model this put
94	12	95.4%	0.047	$0.50		—	-0.951	98.4%	—	0
Call · $115 Last $0.50 Breakeven $115.50 Implied vol 95.4% Delta 0.047 ≈5% ITM Gamma 0.006 Theta -0.04 Vega 0.024 Open interest 94 Model this call Put · $115 In the money Last — Breakeven — Implied vol 98.4% Delta -0.951 ≈95% ITM Gamma 0.006 Theta -0.036 Vega 0.021 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 1756262 CUSIP 89377M109 13F (30d) 101 filings 101 filers Visit website Investor relations