XBIState Street SPDR S&P Biotech ETF
XBI Options Overview
Mixed signals. Conditions favor premium sellers.
REWARDS
RISK ANALYSIS
XBI Gamma Walls
XBI Hedge Radar
Neither score is at an extreme today. Neither axis is a forecast — this is where XBI sits on protection cost vs. fragility today.
Protection is priced in the cheap band (3.15) — the move being priced is 1.64x this name's own median 20-trading-day move, and downside puts carry 0.6 IV points more than at-the-money, measured against this name's own rolling 20-trading-day realized moves (484 overlapping windows). Fragility reads neutral (4.22): it is trading 3% above its hedge wall on a wall graded HIGH for reliability, and its realized-vol regime is stable.
Value
Is IV priced right?
Measures whether options are cheap, fair, or rich relative to historical and peer
IV Rank 48.9% — elevated vs history
IV/HV 0.99x — IV ≤ HV
Sector percentile 69% — above sector median
Front/Back 0.97x — contango
Put/Call IV 1.16x — elevated
ATM IV 32.6% — normal range
Effective IV 49.8% (ATM 32.6% + spread 8.6% + bias) — excellent value
Total drag 13.45% (spread 8.59% + slippage 4.86%) — high friction
Vega efficiency 23.61 (vega 20.280 / spread 8.59%) — efficient
Sentiment
Bullish or bearish?
Analyzes
Conviction-weighted: +40% (strong bullish) — Raw: +32%
|OI skew| 6.5% — balanced
Vol skew -35.4%, OI skew -6.5% — aligned
0-DTE 25%, far-OTM 15%, avg DTE 30
OI change +0.0% (5d) — stable
ITM: -44%, ATM: +52%, OTM: +26% — neutral (ITM/ATM divergent)
Sector P/C percentile 93% — very bearish vs sector
Activity
Unusual activity?
Detects volume surges,
Volume 0.6x avg — normal
Vol/OI 2.4% — normal turnover
1 day(s) elevated — may be one-day event
OI change -11.6% (5d) — unwinding
Sector activity percentile 49% — neutral vs sector
Large trade volume 29% — mixed
Aggressive execution 29% — patient
Conviction +40 (bullish) — moderate
Liquidity
Can I trade efficiently?
Evaluates
Spread 8.6% — wide
OI 593,799 — deep
Volume 14,363/day — active
$0.43 to cross — cheap
0 liquid strikes — limited options
Sector spread percentile 77% — wider than sector
Depth 266.3 contracts (bid:125.4 ask:140.9) — adequate
Avg slippage 4.86% — poor
Timing
Is now a good time?
Considers earnings proximity,
Slope -3.4% — flat/unclear
IV percentile 49% — neutral
IV kink -0.6pts — no clear event
θ/ν ratio 197.85 — favors income trades
4 liquid expirations — flexible
safe window: No earnings detected
Spread ratio 1.00x — stable
Flow +40% @ 70% consistency — STRONG directional (bullish)
Score 59 (ITM 20% + inst 29%) — moderate institutional
Directional Strategy Fit
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.