Shares in UK payment platform Wise (LSE:WISE) have fallen 22% from their 52-week highs. But the firm’s most recent trading update shows strong growth in revenues, profits and customers. The company’s voting structure means it isn’t a member of the FTSE 100 or the FTSE 250, despite a market-cap of £8bn. So is there an opportunity going under the radar of most investors here? It’s unusual to see a company’s stock falling while the business is doing well. This is usually found in the likes of British American Tobacco, where there are doubts about the firm’s long-term viability. Wise is no melting ice cube though. Formerly known as TransferWise, the company’s a platform that allows students, expats and businesses to send money overseas – sort of. The clever bit is that the funds don’t actually travel. If I want to send money to someone in Australia, I make a payment to Wise’s UK account and its Australian account transfers the money to my aunt. Moving money internationally with Wise is easier, cheaper and faster than a bank. So the company has the kind of differentiated business that makes for a good investment. In its most recent trading update, Wise reported...