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RAREUltragenyx Pharmaceutical Inc.

Options Analysis Report•PHARMACEUTICAL PREPARATIONS
Market Cap $2.5B|NASDAQ
● 2026-08-31$25.61
BULLISH
Analysis: 2026-08-28 EOD data
1Y -20.0%YTD +8.5%7D -0.4%
2,219
30D
±36.8%
93%

RARE Options Overview

bullish flow. Conditions favor option buyers.

REWARDS

RISK ANALYSIS

5.2VALUESENTIMENTACTIVITYLIQUIDITYTIMING

Snowflake Analysis

Balanced conditions with no clear edge

Learn
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RARE Gamma Walls

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Value

Is IV priced right?

4.8
ExpensiveCheap

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

levels.

Risk Checks6/9 checks passed
≤35%

IV Rank 50.0% — elevated vs history

<1.05x

IV/HV 1.00x — IV ≤ HV

Sector Relative≤50%

Sector percentile 50% — below sector median

<1.1x

Front/Back 1.02x — flat

<1.25x

Put/Call IV 1.00x — normal

<80%

ATM IV 0.0% — normal range

<80%

Effective IV 43.8% (ATM 0.0% + spread 21.9% + bias) — excellent value

<3.0%

Total drag 45.14% (spread 21.91% + slippage 23.23%) — high friction

≥5.0

Vega efficiency 0.00 (vega 0.000 / spread 21.91%) — spread drag

Sentiment

Bullish or bearish?

6.7
BearishBullish

Analyzes

,
, and flow direction to determine market bias.

Risk ChecksVery Bullish - Moderate signal (Conviction: +33%, Raw: +48%)
|net sentiment| ≥25%

Conviction-weighted: +33% (strong bullish) — Raw: +48%

≥15%

|OI skew| 32.8% — put-heavy

Same sign, |vol skew| ≥10%

Vol skew +64.0%, OI skew -32.8% — divergent (opposite)

≥2/3 conditions

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

|change| ≥3%

OI change +0.0% (5d) — stable

|weighted flow| ≥20%

ITM: +47%, ATM: -65%, OTM: +49% — neutral (ITM/ATM divergent)

Sector Relative≤40% or ≥60%

Sector P/C percentile 29% — very bullish vs sector

Activity

Unusual activity?

4.3
QuietActive

Detects volume surges,

, and unusual options activity that may signal moves.

Risk Checks3/8 checks passed
≥1.5x

Volume 0.5x avg — normal

≥15%

Vol/OI 1.8% — normal turnover

≥2 days

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

≥5%

OI change +6.3% (5d) — building

Sector Relative≥60%

Sector activity percentile 53% — neutral vs sector

≥30%

Large trade volume 9% — mostly retail

≥60%

Aggressive execution 60% — urgent

≥30

Conviction +33 (bullish) — moderate

Liquidity

Can I trade efficiently?

3.7
IlliquidLiquid

Evaluates

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

Risk Checks3/8 checks passed
≤5.0%

Spread 21.9% — wide

≥10,000

OI 119,933 — deep

≥500

Volume 2,219/day — adequate

≤$0.50

$1.10 to cross — expensive

≥5 strikes

0 liquid strikes — limited options

Sector Relative≤40%

Sector spread percentile 0% — much tighter than sector

≥100 contracts

Depth 85.7 contracts (bid:51.1 ask:34.6) — thin

<1.0%

Avg slippage 23.23% — poor

Timing

Is now a good time?

6.6
RiskyFavorable

Considers earnings proximity,

, and event calendar for optimal entry timing.

Risk Checks4/9 checks passed
|slope| ≥5%

Slope +2.4% — flat/unclear

<30 or >70

IV percentile 50% — neutral

≥10pts kink

IV kink -25.4pts — no clear event

<0.5 or >2.0

θ/ν ratio 1.00 — favors mixed

≥3 expirations

4 liquid expirations — flexible

≥60% (safe)

safe window: No events detected

<1.2 ratio

Spread ratio 1.00x — stable

≥25% strength + ≥50% consistency

Flow +33% @ 66% consistency — moderate (bullish)

≥40 composite score

Score 39 (ITM 20% + inst 9%) — retail dominated

Directional Strategy Fit

Option Buyers
Long Calls5.6
bullishIV fair, bullish flow
Long Puts4.4
bearishIV fair, bullish flow
Premium Sellers
Cash-Secured Put7.5
bullishIV fair, bullish flow
Covered Call4.4
bearishIV fair, 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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