S4 · Wall-to-wall round trip

When the Zero Gamma envelope is wide and price oscillates between the 0DTE put wall and call wall, the session plays out from one wall to the other, with the Zero Gamma as the pivot. You fade each wall after absorption, you aim for the other wall, and you know the day will be choppy. It is not a setup strictly speaking: it is a session framework, in which S2 and S3 are the two legs.

The idea

A wide envelope (the Gamma Envelopes cloud) says the boundary between the two regimes is blurred: the market keeps changing its mind. Between two volume-based 0DTE walls, price tends to oscillate, and the Zero Gamma, in the middle, attracts then rejects. The crossing of the Zero Gamma is the moment to decide: keep the second half until the opposite wall, or exit and prepare the reverse leg.