RE: There is a saying6 Jun 2020 13:36
I often simply wait for the stock to get to the point where it looks like it is overbought and take the profit out but leave the original investment. Then look around for another undervalued stock to invest the profit in.
However, if it is an Aim stock that has done well it is probably better to sell the whole investment.
I have just done that with ITM and invested in MKS.