We are posting this as a reminder to all those that want to play in the market during large OPEX days also known as Quad Witching. Below is snapshot from the CBOE official settlement page. It shows an opening price of 3161 which is where all of the SPX AM options would officially be marked. Most of you would not have been able to obtain that price which was the high of the day unless you put in a “market on open order”.
This chart of the ES May future opening (the user who posted this image was in overseas so the time scale is not eastern time). This highlights how large this opening print was.
Seconds after the 4pm EST cash close, futures dropped about 30 handles to the session lows.