https://www.reuters.com/article/paytm-listing/paytm-sinks-on-debut-as-indias-biggest-ipo-irks-some-investors-idUSKBN2I3001 >MUMBAI (Reuters) -Digital payments start-up Paytm made one of the worst major Indian stock market debuts on Thursday as its shares fell more than 27% after India's largest-ever IPO.