Tuesday has been down 6 of the last 10 but up 4 of the last 5.
Up 8 days in a row, the next day has 44% chances to close up.
Up 8 days in a row, short at the close, HOLD until the very first day SPY closes down you have 86% chances to make money with profit factor 2.1 which is good.
Down 1 day, the next day has 56 chances to close up.