S&P 500 Bulls Trapped Below 4,200: Significant Reversal on the Horizon?

 | May 22, 2023 03:45AM ET

Stocks managed to conclude the week on a positive note, primarily driven by flows related to options attributed to Friday’s OPEX. The primary concern in the future is the location of the call wall and its potential impact on pushing the market higher. The call wall represents the level with the highest call gamma, acting as a resistance level. Similarly, the put wall signifies the level with the highest put gamma, serving as a support level.

The call wall has remained consistently at 4,200 in the S&P 500 for a considerable period. Preliminary data suggests that the call wall will likely persist at 4,200 for Monday. It’s important to note that this can change on a daily basis. Understanding the position of the call wall holds significant importance, particularly if one anticipates a market upturn from the current state.

This implies that market makers will likely sell S&P 500 futures above 4,200, thereby restricting the index’s upward movement. Furthermore, the 4,150 level is likely to be the zero gamma level. This signifies that market makers will also act as sellers of the S&P 500 below 4,150. As the index experiences a decline, the selling pressure intensifies due to entering a negative gamma regime.