Ion Investment Group, a holding company formed to acquire and consolidate financial technology companies, acquired Fidessa, a British-headquartered company which provides software and services, such as trading and investment management systems, analytics and market data, for £1.4bn. Temenos had offered £35.67 a share in cash, plus the 79.7p dividend, for Fidessa. The Ion offer represents a near-50% premium to Fidessa’s share price before Temenos’s interest became public.