Yeah it's been low turnover since mid 2012, aside from a modest pickup in the second half of 2016 and early 2017 - which really was a great time to be buying.
From what I can tell, the turnover since mid 2012 has largely been small shareholders selling out and their holdings being hoovered up by existing large holders. Not many new players in the last few years. This may well change though if/as the SRH growth story continues to unfold.
SRH Price at posting:
30.0¢ Sentiment: Buy Disclosure: Held