Positive Gamma — Dealers buy dips, sell rips (stabilizing, mean-reverting behavior)
Negative Gamma — Dealers sell dips, buy rips (amplifying, trend-following behavior)
Gamma Flip — The strike where dealer gamma switches from positive to negative. The most important single level for intraday direction.
Pin Level — Max OI strike where price is magnetically attracted near expiry (max pain theory)
Max Pain — Strike where the most options expire worthless, minimizing aggregate payout to option holders
Put Wall — Highest put OI strike. Acts as support because dealers buy stock to hedge short puts here.
Call Wall — Highest call OI strike. Acts as resistance because dealers sell stock to hedge short calls here.
GEX — Gamma Exposure. Net gamma across all strikes, determining whether dealers stabilize or amplify moves.
DEX — Delta Exposure. Net dealer delta across strikes, showing the directional tilt of hedging flows.
IV — Implied Volatility. The market's forward-looking expectation of price movement, derived from option prices.
RV — Realized Volatility. Actual historical price movement over a lookback window. Compare to IV for edge.
OI — Open Interest. Total outstanding option contracts at a given strike and expiry.
DTE — Days to Expiration. Time remaining until an option contract expires.
OpEx — Options Expiration. Typically the third Friday of each month (monthly); also weekly and quarterly.
GBM — Geometric Brownian Motion. The stochastic model underlying Monte Carlo simulation: drift + random volatility.
ATR — Average True Range. Volatility measure that normalizes across price scales. Used for position sizing and breakout detection.
Contango — IV term structure slopes upward (normal). Near-term IV is lower than far-term. Indicates a calm market.
Backwardation — IV term structure is inverted. Near-term IV spikes above far-term, pricing imminent event risk.
Skew — The tilt of the IV curve across strikes. Negative skew (puts expensive) = fear. Positive skew (calls expensive) = greed.
Butterfly (BF) — Measures non-directional extreme-move pricing. Elevated BF = market expects a big move but is uncertain of direction.
Risk Reversal (RR) — Measures directional put vs. call demand. Negative RR = puts more expensive (fear). Positive = calls more expensive.
Vanna — Sensitivity of delta to IV changes. Post-earnings vol crush + positive vanna = dealers buy stock. Key second-order Greek.
Charm — Delta decay over time. Drives end-of-day and OpEx-week hedging flows even without price movement.
B-L Distribution — Breeden-Litzenberger. Risk-neutral probability density extracted from option prices. Reveals the true market-implied distribution.
Confluence — When multiple independent signals agree on the same direction. Higher confluence = higher conviction.
Survival Rate — In the constrained MC projection, the % of simulated paths that reach the target. Higher = more probable scenario.