Earnings season has a tendency for some volatility.  It's a good opportunity to get in  lower, then sell higher, or just buy low and sit on it while it grows (hopefully!)
An old mantra is buy on the rumour, sell on the news. This is very true when applied to ASX listed stocks, especially in energy and mining.
I've said it before and will say it again..... one has to keep a close eye on Joint Ventures (JV's) and Mergers and ...