Sell S&P Futures @ 1856- win, Buy S&P Futures @ 1847- win at higher risk

High risk:
Sell S&P Futures around 1856 if it stays below & drops further, for 30 minutes expiration
Buy S&P Futures around 1847 if it stays above & goes higher, for 30 minutes expiration

Results:
Sell S&P Futures @ 1856- win
Buy S&P Futures @ 1847- win at higher risk

S&P Futures reached 1856 & dropped to 1851.45
S&P Futures rebounded higher than 1847, buy at higher risk around 1850 for it to reach above 1856
Stop selling S&P Futures @ 1856 after it broke above 1856 & went higher