One thing I've learned is when a Australian company decides to acquire overseas and especially in the UK it's time to dump the stock. Even Westfarmers got it wrong taking a $1.3B hit or around the same as SGH but WES can absorb that hit unlike SGH.
http://www.euronews.com/2018/02/04/australias-wesfarmers-sees-major-impairments-in-interim-results