A base in place or just a better level to sell? Nasdaq 100 futures continue to slip this morning

Since the last update here on the EUR/USD the US equity futures have fallen back a bit more. That has seen the Dow Jones reprice the opening by around 500 points right now and both the S+P 500 and Nasdaq 100 futures are a little lower still. The dollar is lower too, as he EUR/USD lifts to around 1.1025. The Nasdaq 100 was the best performing US index into the close last night, with a stellar 12% rise on the day. That was amazing by any measure. So, as the index future falls back some are now wondering whether or not the bottom is now in and this dramatic rebound has further to run, OR conversely that rise has merely provided a better level to sell? The Nasdaq 100 closed last night at 19,145 is right now priced to reopen at 18,790