Rolls-Royce: FTSE 100 giant now worth £100bnRolls-Royce is the fifth largest member of the FTSE 100 index. FTSE 100 giant Rolls-Royce is now worth more than £100bn after its share price continued its remarkable rise. Meanwhile Babcock was up over one per cent to 1,195 and FTSE 100 darling Rolls-Royce rose 0.8 per cent to 1,170.50. Its underlying operating profit grew by 50 per cent from £1.14bn to £1.73bn in the first six months of the year. Underlying revenue rose from £8.18bn to £9.05bn during the period.