Broken measured moves often become support/resistance

E-mini ES 2018/12/18

today the opening range formed just below a possible profit target of the bears from yesterday, 2 x signal bar range (12/12 breakout pullback short), 2 x the initial risk for a short below that bar is at 2573.50

the 1st failed BO of the opening range briefly went above that resistance and failed with a 3BR, a failed H2 after a fBO is often a trend generator and a high probability trade

the strong shaved close fBO SB on the other end of the opening range warrants a tightening of the stop, as it can become a HL MTR of yesterdays bear CH, a possible LOD

re-enter, if your premise is still valid, like on the next fH2, a lmt C short