Below is a potential short strategy in S&P 500:
Short= C>Ref(C,-1) AND Ref(C,-1)>Ref(C,-2) AND Ref(C,-2)>Ref(C,-3) AND ADX(5)>35 AND RSI(2)>90
If the close if higher for the third time in a row, 5 day ADX is bigger than 35 and RSI(2) is bigger than 90, then go short on the close.
Exit/cover on tomorrow’s open.
This is the equity chart tested on SPY:
Initial capital is 100 000 and 200 shares of SPY traded throughout the test. No commissions and slippage.
Profit factor is 1.81.