@mwala i dont see why you should leave co-op to go to mumias.. mumias is valued at around 16 bob but you should remember that stocks rarely trade at their true value and mumias faces alot of risks and also that co-op shares are also very undervalued...
i think you should only sell a small amount to move into mumiaso or if you are really bullish on mumias then commit some new money for the transaction
Mark 12:29
Deuteronomy 4:16