Ann: HY2019 Investor Presentation - March 2019, page-10

Interesting chart. Convergence of several things make this a retracement entry point upon getting a next strong green candle:

1) Upward trend line (red line) starting on lows during 28 Nov 18
2) Resistance of previous high on ~21 Feb 19 (red shaded box)
3) 0.5-0.618 retracement Fib line, which interestingly enough has been obeyed in the last 2 run ups
4) Perhaps less significant is the 50MA, which historically hasn't been a good support.

I'd place a tight stop loss in case of reversal in overall trend, as the recent falls have been large in magnitude with volume picking up, perhaps signalling change in sentiment.