Buy S&P 500 @ 1706- won

Buy S&P 500 @ 1706 if it stays above, for 30 minutes expiration
Trend changed, S&P 500 rebounded @ 1701 & broke above 1706
S&P 500 might target 1710 next

Result: won
S&P 500 expired @ 1709.12 at 10:30am EDT
Best entry point after 1706 would be @ 1707.47 at 10:20am

Trend also changed again after it reached 1709.50 at 10:32am & dropped to 1705.88, breaking slightly below 1706
Therefore, trading after the trend changed & breaking below 1706 would be invalid