The DRC concerns do affect the S.P,at times,as does the copper price. But the main dives come from C.R'S and the recent MCK barter dilution. Since I had shares the range has been between 15C TO 45c,currently 33c. Some brokers have a 56c to 75c prediction,so I guess it depends on your apetite for risk,as to whether TGS is for you.