Primary read
Bullish
Call-side pressure
Ticker Options Intelligence
HTFL options intelligence
Heartflow, Inc. Common Stock options pressure, expected move, strike concentration, and Sharemaestro trend context.
Conviction
38
Market data through 12 Aug 2026
Checked 13 Aug 2026 11:45 · complete available chain
Call-side pressure
Bullish pressure
HTFL currently carries bullish options pressure with a 38/100 conviction score. The nearest-chain expected move is 18.6%, with volume/open-interest participation at 0.01.
Expected move
18.6%
Wider near-term move priced
Activity / OI
0.01
Current volume is quieter versus prior open interest
Put-call
0.40
Call-side skew
Trend fit
20
Options are not fully confirming trend
Weekly backdrop
+14.2%
RS -15.1
Expected move
18.6%
Put-call volume
0.40
Volume / OI
0.01
Reference IV
0.88
Max pain
25.00
Underlying
28.82
Nearest expiry
21 Aug 2026
Contracts
150
Research Brief
HTFL has a bullish chain read with 38/100 evidence alignment.
The practical question is whether the underlying confirms the options concentration. The chain prices a reference range of 23.47–34.17; The largest call open-interest concentration is 30.00; the largest put concentration is 22.50. The most active strike by current volume is 30.00.
Priced range23.47–34.17
Call concentration30.00
Put concentration22.50
Max pain reference25.00
- Price holds or improves while call-side concentration remains elevated.
- Participation is above the ticker's stored normal, which makes the read more noteworthy.
- Price weakens while call pressure fades or reverses toward puts.
- Options and the weekly trend are not yet giving the same message.
- Front-expiry volatility is rich, so the signal may be event-driven and vulnerable to volatility compression.
Priced Move
Where the chain says movement becomes exceptional
Options imply 23.47 to 34.17. Max pain at 25.00 sits inside that range, 13.3% below spot.
Spot
Max pain
23.4728.82 ± 5.3534.17
Confirmation level
A close beyond 34.17 or below 23.47 at the 21 Aug expiry would exceed the move currently priced by this chain.
Important limitation
The range is a pricing reference, not a forecast; volatility can reprice sharply after news or as expiry approaches.
Score Construction
Why conviction is 38/100
Pressure is 51/100 toward calls; conviction uses its strength, while the signal label carries its direction.
Directional pressure51 × 42%
+21.3
How strongly activity leans toward calls or puts.
Participation10 × 22%
+2.2
Volume relative to existing open interest and contract-level activity.
Trend agreement20 × 26%
+5.2
How closely the chain read agrees with the underlying trend backdrop.
Volatility96 × 10%
+9.6
The intensity of implied volatility and the priced move.
Positioning by Strike
Where open interest and current activity concentrate
The largest call open-interest concentration is 30.00; the largest put concentration is 22.50. The most active strike by current volume is 30.00. Open-interest concentrations show where positions exist; they are not proven support, resistance or dealer exposure.
Put open interestStrikeCall open interest
0
12.50-56.6%
0
0
15.00-48.0%
0
1
17.50-39.3%
1
6
20.00-30.6%
0
20
22.50-21.9%
1
19
25.00-13.3%
43
4
30.004.1%
88
0
35.0021.4%
31
0
40.0038.8%
10
0
45.0056.1%
0
0
50.0073.5%
0
Nearest spot strike Max pain strikeBars show relative OI within this expiry
Gamma Profile by Strike
Positive gamma proxy
Call-side gamma sensitivity outweighs the put-side proxy across the retained chain. The largest bars mark levels where delta-hedging sensitivity may be most concentrated.
Net profile+$42,177Delta change / 1% move
Positive peak40.00+$29,819
Negative peak22.50-$1,095
Nearest balance25.91Interpolated sign change
StrikeNegativePositiveNet / 1% move
12.50-56.6%
+$154
15.00-48.0%
+$324
17.50-39.3%
-$30
20.00-30.6%
-$449
22.50-21.9%
-$1,095
25.00-13.3%
-$600
30.004.1%
+$2,687
35.0021.4%
+$12,474
40.0038.8%
+$29,819
45.0056.1%
-$1,067
50.0073.5%
-$42
Positive call-side proxy Negative put-side proxyHighlighted row is nearest spot strike
Scenario proxy = gamma × open interest × 100 shares × spot² × 1%. Calls are positive and puts negative by convention. Missing Greeks use a Black-Scholes estimate from stored IV with zero rate and dividend assumptions. Open interest does not reveal who is long or short, so this is not observed dealer positioning or a forecast.
Volatility Curve
Front-loaded volatility
Near-term options are materially richer than later expirations, consistent with concentrated event or immediate-risk pricing.
0.88
21 Aug
9d
0.95
18 Sep
37d
0.76
16 Oct
65d
0.82
18 Dec
128d
0.82
15 Jan
156d
0.81
19 Mar
219d
0.76
17 Dec
492d
Volatility by Strike
Upside optionality premium
Out-of-the-money calls carry higher implied volatility than comparable puts, indicating richer upside optionality.
25
30
Put IV Call IV
Historical Replay
How matured reads behaved through expiry
Forward validation is building. The earliest eligible stored read expires 21 Aug 2026; its result will appear after the matched closing reference is stored.
Directional follow-through-
Moves contained by pricing-
Average expiry move-
Validation readiness
- Auditable calculationoriginal version retained
- Independent entryone read per market session
- Point-in-time referencerequired at entry
- Matched expiry closereported only after maturity
Eligible snapshots must have a dated market session, stored signal, and point-in-time market reference. Each observation uses one read per market session and the first stored weekly close on or immediately after expiry; its original calculation version is retained. It is an evidence audit, not an executable strategy or evidence of future performance.
Evidence Quality
Usable with limits
Retained chain100%
Implied volatility100%
Two-sided quotes100%
Open interest100%
- Chain status
- Complete available chain
- Market date
- 12 Aug 2026
- Calculation
- v2.0
- Contracts
- 150 / 150
- No material coverage gap was detected in the retained chain.
Aggregate chain data supports concentration, participation and pricing analysis. It does not identify trade aggressor, opening versus closing activity, multi-leg intent or dealer inventory.
Options Intent Radar
Short-dated OTM call concentration
Call activity is concentrated in upside and shorter-dated contracts; trade direction remains unconfirmed without aggressor data.
Options pressure and weekly price action are pointing in the same constructive direction.
Short-dated OTM call concentration matters because it connects the options headline to the actual evidence: $5,400 of estimated gross traded notional, calls · 8-21 days · otm, and a bullish flow confirms price backdrop. Use it as a research priority signal, then validate the chart, liquidity, event calendar, and risk before acting.
Options pressure+51
1W price+14.2%
Call premium64%
Put premium36%
Notional split
C 64% / P 36%
Estimated gross traded notional uses volume × contract multiplier × midpoint, or last price when no valid midpoint is available.
Freshness
0.01
Volume divided by open interest across the visible chain.
Trend fit
20/100
Agreement between options pressure and Sharemaestro market context.
Aggregate chain data does not identify trade aggressor or opening versus closing activity; call/put concentration is not proof of market direction.
Calls · 8-21 days · OTM
calls cluster with 20 contracts traded, $3,445 estimated gross traded notional, and 64% of visible notional.
$3,445
Puts · 8-21 days · ITM
puts cluster with 5 contracts traded, $1,562 estimated gross traded notional, and 29% of visible notional.
$1,562
Puts · 46-90 days · OTM
puts cluster with 2 contracts traded, $325 estimated gross traded notional, and 6% of visible notional.
$325
Puts · 8-21 days · OTM
puts cluster with 1 contracts traded, $68 estimated gross traded notional, and 1% of visible notional.
$68
Setup Classification
Opportunity and risk frame
The tape is pricing or displaying unusually elevated activity.
Expected move or upcoming earnings makes the setup more event-sensitive.
Options positioning is not confirming the underlying trend context.
Activity Anomaly
Above normal
Activity is running above the recent historical baseline.
Baseline: 10 completed sessions
Volume rank80th
Volume/OI rank80th
IV rank50th
Market Context
Underlying confirmation
Close28.82
1W+14.2%
RS-15.1
Fair value-2.7%
Options pressure51
Speculation10
Volatility96
Trend fit20
Today Versus Normal
Stored-options context
30d avg 20.5% · 10 sessions
30th
90d avg - · 10/30 sessions
-
180d avg - · 10/60 sessions
-
30d avg 0.90 · 10 sessions
50th
90d avg - · 10/30 sessions
-
180d avg - · 10/60 sessions
-
30d avg - · 9/10 sessions
-
90d avg - · 9/30 sessions
-
180d avg - · 9/60 sessions
-
30d avg 0.01 · 10 sessions
80th
90d avg - · 10/30 sessions
-
180d avg - · 10/60 sessions
-
Pressure Trail
Recent pressure and volatility
29 Jul 10:56
Volatility
Pressure 100
Move 23.5%
30 Jul 10:46
Mixed
Pressure 7
Move 17.5%
31 Jul 13:29
Bullish
Pressure 36
Move 23.3%
31 Jul 15:26
Volatility
Pressure -23
Move 20.3%
31 Jul 16:10
Volatility
Pressure -23
Move 20.1%
31 Jul 17:00
Volatility
Pressure -23
Move 20.1%
31 Jul 17:19
Volatility
Pressure -23
Move 20.1%
1 Aug 02:29
Volatility
Pressure 100
Move 19.8%
Strike Map
Where activity is clustering
Strike12.50
Calls · V 0 · OI 0
Puts · V 0 · OI 0
Strike15.00
Calls · V 0 · OI 0
Puts · V 0 · OI 0
Strike17.50
Calls · V 0 · OI 1
Puts · V 0 · OI 1
Strike20.00
Calls · V 0 · OI 0
Puts · V 0 · OI 6
Strike22.50
Calls · V 0 · OI 1
Puts · V 0 · OI 20
Strike25.00
Calls · V 0 · OI 43
Puts · V 1 · OI 19
Strike30.00
Calls · V 14 · OI 88
Puts · V 5 · OI 4
Strike35.00
Calls · V 6 · OI 31
Puts · V 0 · OI 0
Term Structure
Expiration activity
Expiry21 Aug 2026
Contracts22
Avg IV0.88
Put-call0.30
Expiry18 Sep 2026
Contracts18
Avg IV0.95
Put-call-
Expiry16 Oct 2026
Contracts22
Avg IV0.76
Put-call-
Expiry18 Dec 2026
Contracts22
Avg IV0.82
Put-call-
Expiry15 Jan 2027
Contracts22
Avg IV0.82
Put-call-
Skew
Call/put IV balance
21 Aug 2026Call IV premium
Call IV1.11
Put IV0.51
Skew-0.60
18 Sep 2026Put IV premium
Call IV0.22
Put IV1.16
Skew0.94
16 Oct 2026Put IV premium
Call IV0.72
Put IV0.92
Skew0.20
18 Dec 2026Put IV premium
Call IV0.75
Put IV0.87
Skew0.13
15 Jan 2027Put IV premium
Call IV0.75
Put IV0.85
Skew0.11
Contract Tape
Most active contracts
ContractHTFL260821C00030000
SideCall
Expiry21 Aug 2026
Strike30.00
Volume14
OI88
IV1.22
ContractHTFL260821C00035000
SideCall
Expiry21 Aug 2026
Strike35.00
Volume6
OI31
IV1.11
ContractHTFL260821P00030000
SidePut
Expiry21 Aug 2026
Strike30.00
Volume5
OI4
IV1.63
ContractHTFL261016P00025000
SidePut
Expiry16 Oct 2026
Strike25.00
Volume1
OI21
IV0.92
ContractHTFL260821P00025000
SidePut
Expiry21 Aug 2026
Strike25.00
Volume1
OI19
IV0.51
ContractHTFL261016P00022500
SidePut
Expiry16 Oct 2026
Strike22.50
Volume1
OI2
IV0.29
ContractHTFL270115C00040000
SideCall
Expiry15 Jan 2027
Strike40.00
Volume-
OI1328
IV0.81
ContractHTFL261218C00035000
SideCall
Expiry18 Dec 2026
Strike35.00
Volume-
OI361
IV0.74
Research Graph
Related research and context
Sharemaestro research
Related News
No recent ticker-specific news yet.
Market Watch
No recent market-watch posts yet.
Earnings
No upcoming matched earnings event.
Plain English Guide
Options context
What usually looks constructive
What usually looks cautious
Options can move quickly and can lose value fast. Treat this as research context, not a buy or sell instruction.