Options/LYEL

LYELLyell Immunopharma, Inc. Common Stock

Options Analysis Report•PHARMACEUTICAL PREPARATIONS

Market Cap $356M|NASDAQ

● 2026-08-31$14.53

NEUTRAL

Analysis: 2026-08-28 EOD data

1Y +27.3%YTD -49.9%7D -1.4%

Options Vol

1,011

30D

Implied Move

±8.6%

IV Rank

15%

LYEL Options Overview

unusual activity. No clear edge detected.

REWARDS

RISK ANALYSIS

Snowflake Analysis

Favorable conditions for option buyers

Learn

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LYEL Gamma Walls

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Value

Is IV priced right?

6.2

ExpensiveCheap

Measures whether options are cheap, fair, or rich relative to historical and peer

levels.

Risk Checks5/9 checks passed

IV Rank

≤35%

IV Rank 50.0% — elevated vs history

IV/HV Ratio

<1.05x

IV/HV 1.00x — IV ≤ HV

Sector Relative≤50%

Sector percentile 50% — below sector median

Term Structure

<1.1x

Front/Back 1.00x — flat

Skew Normal

<1.25x

Put/Call IV 1.00x — normal

Absolute IV

<80%

ATM IV 0.0% — normal range

Spread-Adjusted Value

<80%

Effective IV 276.9% (ATM 0.0% + spread 138.5% + bias) — expensive

Execution Efficiency

<3.0%

Total drag 182.27% (spread 138.46% + slippage 43.81%) — high friction

Vega Efficiency

≥5.0

Vega efficiency 0.00 (vega 0.000 / spread 138.46%) — spread drag

Sentiment

Bullish or bearish?

7.9

BearishBullish

Analyzes

put/call ratios

open interest skew

, and flow direction to determine market bias.

Risk ChecksVery Bullish - Moderate signal (Conviction: +99%, Raw: +98%)

Flow Direction

|net sentiment| ≥25%

Conviction-weighted: +99% (strong bullish) — Raw: +98%

OI Skew Magnitude

≥15%

|OI skew| 22.7% — call-heavy

Volume-OI Alignment

Same sign, |vol skew| ≥10%

Vol skew -98.2%, OI skew +22.7% — divergent (opposite)

Conviction Quality

≥2/3 conditions

0-DTE 0%, far-OTM 15%, avg DTE 30

OI Momentum

|change| ≥3%

OI change +0.0% (5d) — stable

Smart Money Flow

|weighted flow| ≥20%

ITM: +0%, ATM: +0%, OTM: +98% — neutral (ITM/ATM divergent)

Sector Relative≤40% or ≥60%

Sector P/C percentile 99% — very bearish vs sector

Activity

Unusual activity?

7.6

QuietActive

Detects volume surges,

block trades

, and unusual options activity that may signal moves.

Risk Checks5/8 checks passed

Volume Surge

≥1.5x

Volume 10.6x avg — hot

Turnover Rate

≥15%

Vol/OI 167.7% — high turnover

Multi-Day Persistence

≥2 days

1 day(s) elevated — may be one-day event

OI Build

≥5%

OI change +1.3% (5d) — stable

Sector Relative≥60%

Sector activity percentile 100% — very active vs sector

Trade Quality

≥30%

Large trade volume 99% — heavy institutional

Execution Urgency

≥60%

Aggressive execution 50% — patient

Flow Conviction

≥30

Conviction +99 (bullish) — strong conviction

Liquidity

Can I trade efficiently?

3.2

IlliquidLiquid

Evaluates

bid-ask spreads

, volume depth, and open interest for trade execution quality.

Risk Checks3/8 checks passed

Tradeable Spread

≤5.0%

Spread 138.5% — wide

Adequate OI

≥10,000

OI 603 — thin

Active Volume

≥500

Volume 1,011/day — adequate

Reasonable Cost

≤$0.50

$6.92 to cross — expensive

Strike Coverage

≥5 strikes

0 liquid strikes — limited options

Sector Relative≤40%

Sector spread percentile 0% — much tighter than sector

Order Book Depth

≥100 contracts

Depth 116.5 contracts (bid:4.1 ask:112.4) — adequate

Execution Quality

<1.0%

Avg slippage 43.81% — poor

Timing

Is now a good time?

6.3

RiskyFavorable

Considers earnings proximity,

time decay

, and event calendar for optimal entry timing.

Risk Checks5/9 checks passed

Term Structure Clarity

|slope| ≥5%

Slope +0.0% — flat/unclear

IV Percentile Clarity

<30 or >70

IV percentile 50% — neutral

Event Detection

≥10pts kink

IV kink 0.0pts — no clear event

Theta/Vega Clarity

<0.5 or >2.0

θ/ν ratio 1.00 — favors mixed

Expiration Distribution

≥3 expirations

3 liquid expirations — flexible

Event Risk

≥60% (safe)

safe window: No events detected

Spread Momentum

<1.2 ratio

Spread ratio 1.00x — stable

Flow Momentum

≥25% strength + ≥50% consistency

Flow +99% @ 100% consistency — STRONG directional (bullish)

Smart Money Timing

≥40 composite score

Score 129 (ITM 20% + inst 99%) — HIGH institutional

Directional Strategy Fit

Option Buyers

Long Calls6.4

bullishIV cheap, bullish flow

Long Puts4.3

bearishIV cheap, bullish flow

Premium Sellers

Cash-Secured Put5.5

bullishIV too cheap, bullish flow

Covered Call3.5

bearishIV too cheap, bullish flow

For educational purposes only. Not investment advice.

The Options Desk tracks the move options price into every US earnings report the week of Aug 31, next to how much each stock has actually moved on its past prints — plus the SPY, QQQ and IWM expected ranges and the gamma walls that box them in.

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