Three years ago Monzo raised money from individuals via crowdfunding; the round funded £1m in just 96 seconds according to AltFi; 1,898 participated and invested on average £527 each totaling 3.33% equity, valuing the firm at £30m at the time; the company has now reportedly closed a new round valuing the firm at £1.9bn; given the current valuation, these investors in the early crowdfunded round have a 6,300% return from their original investment. Source