The mechanical futures flow dealers are forced into · ^SPX / ^NDX / ^RUT · Observational
Market makers must hedge their 0DTE options book by trading futures. Positive gamma → they buy dips / sell rips (stabilizing). Negative gamma → they sell dips / buy rips (accelerating). Charm (time decay) creates a passive directional drift, strongest late in the session. This page reads that mechanical flow.
Dealer long/short positioning and E-mini contract counts are modeled estimates (hedge-ratio assumption + OI-sign convention), shown alongside raw $-notional. This surface is observational and does not drive live trades.