I guess the shape of the trend curve looks very similar to other so called growth companies (like WYN, XRO, PEB, to name just a few). Admittedly - they make already a profit (the others don't) , but the PE (around 60) is outrageously high.
I suppose the trend will go up again if & when
- they either manage to get their PE down to acceptable levels (i.e. either increase earnings or drop share price) or
- if shareholders are again chasing the tech growth bubble or
- if they consistently demonstrate a growth rate justifying their current PE (which would mean a growth rate around or north of 50%):
quite difficult to do that sustainably
- if some unexpected / random event happening which would bring A2 milk into the focus of a new group of potential share holders
with deep pockets (like WYN's announcement of their deal with the UAE authorities, which launched their SP ...)
Just my 2 cents.