A strike with very large options open interest where dealer gamma concentrates and price tends to pin.
A position with net zero directional exposure — the constraint that forces dealer hedging flow.
The rate of change of an option's delta as the underlying moves.
Options expiring the same day; their extreme gamma makes hedging and price highly reactive.
The underlying buying/selling market makers must do to offset the options they sold.
The strike above spot with the largest call open interest; often acts as resistance.
The strike below spot with the largest put open interest; often acts as support.
The net dollar amount dealers must trade per move to stay hedged; sign tells you the volatility regime.
The strike where the most options expire worthless — where price is often drawn into expiration.
The price where aggregate dealer gamma flips sign, changing whether moves are dampened or amplified.
Price getting drawn to and held near a high-gamma strike into expiration.
A defined-risk income strategy that profits when the underlying stays in a range.
Current volume versus a strike's own recent baseline — how anomalies are flagged.
The number of outstanding options contracts at a strike; concentrates dealer hedging.
How much an option's price moves per $1 move in the underlying — the exposure dealers neutralize.