Everything went apeshit today around 1100 AM ET when the White House announced trade talks with China may resume. Most folks were expecting a sudden tariff announcement, thus the shock-and-awe rise. When the euphoria died, the selling resumed for a time. Then people came to grip with reality and started a slow climb upwards, AGAIN.
What you really need to watch for tonight is how Asia reacts to that announcement when they open soon. I suspect it will be positive.