Shares of Airtel Africa Limited (LON:AAF) shot up 1.8% on Tuesday . The company traded as high as GBX 63 ($0.78) and last traded at GBX 62.50 ($0.77), 309,971 shares changed hands during trading. The stock had previously closed at GBX 61.40 ($0.76). A number of research firms have recently weighed in on AAF. Barclays […]