LONDON — Airtel Money, the mobile money business of Airtel Africa, has listed on the Main Market of the London Stock Exchange under the ticker AMC, at an offer price of £1.96 per share that values it at about £5.3 billion. Only existing shareholders sold shares, so no new capital was raised. Launched in 2011, Airtel Money has about 53 million monthly active users in 13 countries and more than 2.3 million agents. In Nigeria it operates through SmartCash Payment Service Bank. Chief Executive Ian Ferrao described the listing as a milestone.