Stake: up to £140m Romi Savova, the boss and co-founder of PensionBee could see her stake valued at more than £100m when it floats this month. The smartphone app business has revealed a price range that could see it valued at up to £384m. It means Savova's 36 per cent holding could be worth as much as £140m when it goes public. Born in Bulgaria and raised in South Africa, the former Morgan Stanley investment banker had the idea for her business after struggling to move a pension pot when switching jobs. 'I discovered it is actually a really tricky nightmare, if you are just a normal human being and want to do something with your retirement savings,' she said.