$SPX Net Notional Trade Data for April 20:

At 10:38 AM, a large sale of 15 MAY 20 2400 calls were sold at the bid (bearish).

By 11:15 AM, the cumulative net notional trade value had gone negative (from up $12.4M)

Maybe there is something to all of this... https://t.co/ykNljFbIN0