Health Care

Heartflow, Inc. (HTFL) options and signal

Figures as of 28 Sep 2026

HTFL is Heartflow, Inc., a Health Care name the model ranks every trading day. The options figures are from the close on 28 Sep 2026. The model's figures are from 25 Sep 2026, one trading day behind the latest, as the Free plan shows them. Every model figure is paper trading.

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At a glance

Figure	Value	Date
Priced move to 16 Oct	16.8% down, 16.8% up	28 Sep
Call wall and put wall	50 and 35	28 Sep
Signal and the desk's view	No signal, view bullish	25 Sep

Options Snapshot

HTFL's at the money implied volatility is 75.5 percent on 28 Sep 2026.

Figure	Value
IV rank	Not stated, 12 weeks of record
At the money IV	75.5%, near month, 18 days
Put/call ratio, open interest	0.36
Call open interest, strikes captured near the price	3,250 contracts
Put open interest, strikes captured near the price	1,160 contracts
Cost to trade at the money	Wide, 71.4% of the option's mid price

From the option chain at the close on 28 Sep 2026. Current on every plan.

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Priced Range

On 28 Sep 2026, HTFL options priced a move of 16.8 percent down and 16.8 percent up by 16 Oct 2026.

Expiry	Days	Down	Up	Range
16 Oct 2026	18	16.8%	16.8%	41.55 to 58.29
20 Nov 2026	53	32.5%	32.5%	33.72 to 66.12
18 Dec 2026	81	36.7%	36.7%	31.62 to 68.22
15 Jan 2027	109	40.9%	40.9%	29.52 to 70.32
19 Mar 2027	172	55.5%	55.5%	22.22 to 77.62
16 Apr 2027	200	56.5%	56.5%	21.72 to 78.12

The range is one standard deviation either side of the close of 49.92, as the option prices imply it.

A priced move restates option prices at the close and says nothing certain about where the price goes.

From the option chain at the close on 28 Sep 2026. Current on every plan.

Open Priced Range in RingMaster The Priced Range guide

Gamma Map

On 28 Sep 2026, HTFL's call wall is the 50 strike and its put wall is the 35 strike.

Figure	Value
Call wall, most open call gamma	50
Put wall, most open put gamma	35
Net dollar gamma, calls minus puts	$92,372
Total dollar gamma, both sides	$202,359
Close	49.92

Dollar gamma is stated for a one percent move in the price.

Net is calls minus puts under the standard convention, not a record of who holds the contracts.

Net gamma changes sign at 4 strikes, so no single flip strike is named.

From the option chain at the close on 28 Sep 2026. Current on every plan.

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Volatility Weather

On 28 Sep 2026, HTFL's at the money IV runs from 75.5 percent at 18 days to 76.2 percent at 200 days.

Days to expiry	At the money IV
18	75.5%
53	84.9%
81	77.7%
109	74.9%
172	80.7%
200	76.2%

Near and far expiries price about the same volatility, a flat term structure.

From the option chain at the close on 28 Sep 2026. Current on every plan.

Open Volatility Weather in RingMaster The Volatility Weather guide

Volatility Smile

On 28 Sep 2026, at the 53 day expiry, HTFL's IV ten percent below the price sits 2.8 points above at the money IV.

Strike area	Implied volatility	Against at the money
10% below the price	87.7%	+2.8 points
At the money	84.9%	0.0 points
10% above the price	82.6%	-2.3 points

From the option chain at the close on 28 Sep 2026. Current on every plan.

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Volatility Surface

On 28 Sep 2026, HTFL's surface spans 6 expiries out to 200 days, with IV from 74.9 to 87.7 percent near the price.

Figure	Value
Expiries captured	6
Nearest expiry	16 Oct 2026, 18 days
Farthest expiry	16 Apr 2027, 200 days
Points within 10% of the price, 7 days out or more	11
Lowest IV among them	74.9%
Highest IV among them	87.7%

From the option chain at the close on 28 Sep 2026. Current on every plan.

Open Volatility Surface in RingMaster The Volatility Surface guide

Expiry Ladder

On 28 Sep 2026, HTFL has 6 captured expiries, from 16 Oct 2026 to 16 Apr 2027.

Expiry	Days	At the money IV	Call open interest	Put open interest
16 Oct 2026	18	75.5%	567	316
20 Nov 2026	53	84.9%	88	68
18 Dec 2026	81	77.7%	679	72
15 Jan 2027	109	74.9%	1,864	658
19 Mar 2027	172	80.7%	31	22
16 Apr 2027	200	76.2%	18	21

Open interest is summed over the strikes captured near the price on each expiry.

From the option chain at the close on 28 Sep 2026. Current on every plan.

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Strike Table

On 28 Sep 2026, HTFL's largest open interest sits at the 40 strike, with 1,560 contracts across the captured expiries.

Strike	Call open interest	Put open interest	Total
40	1,453	107	1,560
35	406	602	1,008
50	802	103	905
45	238	220	458
55	88	79	167
60	167	0	167

From the option chain at the close on 28 Sep 2026. Current on every plan.

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Since Yesterday

From 25 Sep 2026 to 28 Sep 2026, HTFL's at the money IV moved from 68.7 percent to 75.5 percent.

Figure	25 Sep	28 Sep	Change
At the money IV	68.7%	75.5%	+6.9 points
Open interest, strikes captured near the price	4,352	4,404	+52
Put/call ratio, open interest	0.35	0.36	+0.01

Open interest changes cannot identify buyers or sellers.

From the option chain at the close on 28 Sep 2026. Current on every plan.

Open Since Yesterday in RingMaster The Since Yesterday guide

Changed Hands

On 28 Sep 2026, 378 HTFL option contracts traded, 0.8 times its own recent average.

Figure	Value
Calls traded	147
Puts traded	231
Against its recent average	0.8 times
Busier than	0 of its last 9 trading days
Open interest, whole chain	4,611 contracts
Volume to open interest	0.08
Unusual volume flag	No

Traded volume and open interest are shown side by side and never combined. Open interest changes cannot identify buyers or sellers.

From the option chain at the close on 28 Sep 2026. Current on every plan.

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Positioning Replay

The replay holds 10 trading days of HTFL's option positioning, from 15 Sep 2026 to 28 Sep 2026.

Date	Close	Net dollar gamma	Top call strike	Top put strike
15 Sep 2026	48.33	$98,178	50	45
21 Sep 2026	50.33	$48,976	50	45
28 Sep 2026	49.92	$92,372	50	35

Each frame restates one nightly capture. Net is calls minus puts, a convention, not who holds the contracts.

From the option chain at the close on 28 Sep 2026. Current on every plan.

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Read-out

On 25 Sep 2026 the desk's view of HTFL was bullish, paper trading.

Figure	Value
Side	Bullish at 45 trading days, no signal
Strategy family	Bull call spread (buy a call spread)
Price target	None. The desk has no price model.

The levels are prices the shares turned at on the chart, with the date of each.

Paper trading. The model's figures from 25 Sep 2026, one trading day behind, as the Free plan shows them.

Open Read-out in RingMaster The Read-out guide

Rank by Timeframe

On 25 Sep 2026 HTFL sat at the 91st percentile of the model's 45 trading day ranking, paper trading.

Timeframe	Percentile	Side
10 trading days	97 of 100	Bullish
20 trading days	90 of 100	Bullish
45 trading days	91 of 100	Bullish

100 is the top of the ranking. A name in the middle three fifths is neutral.

Paper trading. The model's figures from 25 Sep 2026, one trading day behind, as the Free plan shows them.

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Timeframe Agreement

On 25 Sep 2026, 3 of 3 timeframes put HTFL on the bullish side, paper trading.

Group	Timeframes	Side	On that side
Near	10 day, 20 day	Bullish	2 of 2
Long	45 day	Bullish	1 of 1

Paper trading. The model's figures from 25 Sep 2026, one trading day behind, as the Free plan shows them.

Open Timeframe Agreement in RingMaster The Timeframe Agreement guide

Signal History

On 25 Sep 2026 HTFL had carried no signal for at least 10 trading days, paper trading.

Trading day	Signal	45 day percentile
25 Sep 2026	None	91 of 100
24 Sep 2026	None	82 of 100
23 Sep 2026	None	91 of 100
22 Sep 2026	None	72 of 100
21 Sep 2026	None	73 of 100
18 Sep 2026	None	82 of 100
17 Sep 2026	None	74 of 100
16 Sep 2026	None	58 of 100

Paper trading. The model's figures from 25 Sep 2026, one trading day behind, as the Free plan shows them.

Open Signal History in RingMaster The Signal History guide

Sector Split

On 25 Sep 2026, 32 of 120 Health Care names were bullish and 52 were bearish, paper trading.

Sector	Names	Bullish	Bearish	Neutral
Health Care	120	32	52	36

Paper trading. The model's figures from 25 Sep 2026, one trading day behind, as the Free plan shows them.

Open Sector Split in RingMaster The Sector Split guide

Questions

What is HTFL's IV rank?: HTFL's at the money implied volatility is 75.5 percent on 28 Sep 2026.
What move are HTFL options pricing?: On 28 Sep 2026, HTFL options priced a move of 16.8 percent down and 16.8 percent up by 16 Oct 2026.
Where are HTFL's call wall and put wall?: On 28 Sep 2026, HTFL's call wall is the 50 strike and its put wall is the 35 strike.
What was the desk's latest view of HTFL on the Free plan?: On 25 Sep 2026 the desk's view of HTFL was bullish, paper trading.

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