Finding the right time to sell any stock is often harder than...

Finding the right time to sell any stock is often harder than finding the right time to buy a stock.
You are doing the conservative / prudent thing by taking some money off the table as we go up.
Mum always told me that small fish are sweet, Rene Rivkin used to always tell me that never be afraid to sell at a profit and leave something in it for the next bloke who bought your shares.
There is no saying that it cant go a lot higher, it is highly rated (m/cap) than peers because simply they dont have the ore body that SIR apparently seems to have.