Madhukant Patel, a retired chartered accountant based out of Ahmedabad, has spent his life studying and analysing company finances. Yet, he fell victim to a stock trading scam. It all started after he was added to a WhatsApp group called ‘Stock Vanguard 150’. Two people whom Patel identified as Sunil Singhania and Karanveer Dhillon shared investment advice on the group.