Maybe the opinions I read about Syrah Resources are correct. First that they over hype their graphite and vanadium resource and second that they are over priced.
https://www.businesstimes.com.sg/stocks/australia-ends-lower-on-ecb-worries-nz-limps
excerpt:
Syrah Resources was the biggest percentage loser on the benchmark, shedding 26 per cent on what was its worst trading day in more than five years. it closed at Australian $3.35 on 10/05/2016
Some might relate it fall to the gold price, but most all of the other graphite companies held their own.