I have closed Long position at 283.1. After watching price action at the area of day high (283.4), uptrend seemed to be getting weaker. This does not mean a reversal is kicking in, it just prompts me for profit taking. Notice about DI+, similar weakness was observed as well. To confirm this decision, I turned to 9-min chart.
I might be wrong which might miss out bigger profit in the afternoon session. However, day trading is all about discipline and timing, I do not act on expectation. In fact, at 1130pm, my position was already in-the-money. Not so bad for 2-hour trading, a positive Friday with +1.2 gain.