On the surface this looks a great company.
Can anyone explain to me why the shares have dropped badly over the past six months
Worries about a global slow down.
Insider sold 8.4% stake in March 2016 at 80p with a lock up for only 6 months (further overhang?)
Miton have reduced their stake since then.
More sellers than buyers as it is a foreign stock listed on AIM?
Agree all this has left it looking cheap to bigger peers - see
http://www.stockopedia.com/compare/?tickers=LON%3APOWR%2C+LON%3ASMDS%2C+LON%3AMNDI%2C+
Hope this helps?