HTFL · Heartflow, Inc.

Track HTFL — free

$42.08 +11.07 (+35.70%) At close · Aug 14

Market Cap

$3.66B

86.95M

Options Chain

Underlying $42.08 · at close Aug 14, 2026 Options Calculator

Positioning

Aug 21, 2026 · 4 days to expiry · 22 contracts · mixed snapshot sessions · Jul 20, 2026–Aug 14, 2026; 5 unknown

Put / call OI

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dated and unknown snapshot sessions

Open interest

—

dated and unknown snapshot sessions

Volume

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dated and unknown snapshot sessions

Chain

Click any strike for greeks, breakeven and the calculator

Expiry

Aug 21 4d Sep 18 32d Oct 16 60d Dec 18 123d Jan 15 151d Mar 19 214d Dec 17 487d

Calls						Puts
OI	Vol	IV	Δ	Last	Strike	Last	Δ	IV	Vol	OI
0	—	705.5%	0.973	—		—	—	—	—	0
Call · $12.5 In the money Snapshot session Unknown Last — Breakeven — Implied vol 705.5% Delta 0.973 ≈97% ITM Gamma 0.002 Theta -0.226 Vega 0.002 Open interest 0 Model this call Put · $12.5 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
0	—	608.4%	0.968	—		—	—	—	—	0
Call · $15 In the money Snapshot session Unknown Last — Breakeven — Implied vol 608.4% Delta 0.968 ≈97% ITM Gamma 0.002 Theta -0.225 Vega 0.003 Open interest 0 Model this call Put · $15 Snapshot session Unknown Last — Breakeven — Implied vol — Delta — Gamma — Theta — Vega — Open interest 0 Model this put
1	1	317%	0.996	$24.00		$0.50	-0.035	512.5%	1	1
Call · $17.5 In the money Snapshot session Aug 14, 2026 Last $24.00 Breakeven $41.50 Implied vol 317% Delta 0.996 ≈100% ITM Gamma 0.001 Theta -0.021 Vega 0.001 Open interest 1 Model this call Put · $17.5 Snapshot session Jul 21, 2026 Last $0.50 Breakeven $17.00 Implied vol 512.5% Delta -0.035 ≈3% ITM Gamma 0.003 Theta -0.202 Vega 0.003 Open interest 1 Model this put
0	—	398.3%	0.97	—		$1.00	-0.04	445.6%	2	6
Call · $20 In the money Snapshot session Unknown Last — Breakeven — Implied vol 398.3% Delta 0.97 ≈97% ITM Gamma 0.004 Theta -0.141 Vega 0.003 Open interest 0 Model this call Put · $20 Snapshot session Jul 20, 2026 Last $1.00 Breakeven $19.00 Implied vol 445.6% Delta -0.04 ≈4% ITM Gamma 0.004 Theta -0.2 Vega 0.003 Open interest 6 Model this put
1	1	—	—	$19.20		$1.01	-0.047	382.9%	11	20
Call · $22.5 In the money Snapshot session Aug 14, 2026 Last $19.20 Breakeven $41.70 Implied vol — Delta — Gamma — Theta — Vega — Open interest 1 Model this call Put · $22.5 Snapshot session Aug 10, 2026 Last $1.01 Breakeven $21.49 Implied vol 382.9% Delta -0.047 ≈5% ITM Gamma 0.005 Theta -0.193 Vega 0.006 Open interest 20 Model this put
44	6	—	—	$16.43		$0.05	-0.017	231.9%	35	23
Call · $25 In the money Snapshot session Aug 14, 2026 Last $16.43 Breakeven $41.43 Implied vol — Delta — Gamma — Theta — Vega — Open interest 44 Model this call Put · $25 Snapshot session Aug 14, 2026 Last $0.05 Breakeven $24.95 Implied vol 231.9% Delta -0.017 ≈2% ITM Gamma 0.004 Theta -0.049 Vega 0.002 Open interest 23 Model this put
128	53	—	—	$12.00		$0.08	-0.076	228.9%	36	36
Call · $30 In the money Snapshot session Aug 14, 2026 Last $12.00 Breakeven $42.00 Implied vol — Delta — Gamma — Theta — Vega — Open interest 128 Model this call Put · $30 Snapshot session Aug 14, 2026 Last $0.08 Breakeven $29.92 Implied vol 228.9% Delta -0.076 ≈8% ITM Gamma 0.013 Theta -0.167 Vega 0.007 Open interest 36 Model this put
79	107	—	—	$7.27		$0.20	-0.09	127.6%	141	10
Call · $35 In the money Snapshot session Aug 14, 2026 Last $7.27 Breakeven $42.27 Implied vol — Delta — Gamma — Theta — Vega — Open interest 79 Model this call Put · $35 Snapshot session Aug 14, 2026 Last $0.20 Breakeven $34.80 Implied vol 127.6% Delta -0.09 ≈9% ITM Gamma 0.027 Theta -0.105 Vega 0.008 Open interest 10 Model this put
10	178	93.6%	0.699	$2.90		$0.85	-0.293	88.2%	192	0
Call · $40 In the money Snapshot session Aug 14, 2026 Last $2.90 Breakeven $42.90 Implied vol 93.6% Delta 0.699 ≈70% ITM Gamma 0.079 Theta -0.17 Vega 0.016 Open interest 10 Model this call Put · $40 Snapshot session Aug 14, 2026 Last $0.85 Breakeven $39.15 Implied vol 88.2% Delta -0.293 ≈29% ITM Gamma 0.083 Theta -0.154 Vega 0.016 Open interest 0 Model this put
Underlying $42.08
0	616	101.9%	0.298	$0.76		$3.70	-0.715	96.8%	173	0
Call · $45 Snapshot session Aug 14, 2026 Last $0.76 Breakeven $45.76 Implied vol 101.9% Delta 0.298 ≈30% ITM Gamma 0.072 Theta -0.182 Vega 0.017 Open interest 0 Model this call Put · $45 In the money Snapshot session Aug 14, 2026 Last $3.70 Breakeven $41.30 Implied vol 96.8% Delta -0.715 ≈71% ITM Gamma 0.074 Theta -0.165 Vega 0.017 Open interest 0 Model this put
0	111	108.6%	0.087	$0.23		$7.40	-0.979	75.8%	10	0
Call · $50 Snapshot session Aug 14, 2026 Last $0.23 Breakeven $50.23 Implied vol 108.6% Delta 0.087 ≈9% ITM Gamma 0.031 Theta -0.088 Vega 0.009 Open interest 0 Model this call Put · $50 In the money Snapshot session Aug 14, 2026 Last $7.40 Breakeven $42.60 Implied vol 75.8% Delta -0.979 ≈98% ITM Gamma 0.016 Theta -0.017 Vega 0.002 Open interest 0 Model this put

About this data

Each contract's last price, volume, greeks, implied volatility and open interest belongs to the snapshot session shown in its details; unknown means the provider omitted the timestamp. This chain has mixed snapshot sessions · Jul 20, 2026–Aug 14, 2026; 5 unknown. Cross-contract positioning totals are shown only when every returned row has the same known session. 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.

Key facts CIK 1464521 CUSIP 42238D107 13F (30d) 184 filings 181 filers Visit website Investor relations