Shift4 Payments, which provides payments processing software for the hospitality industry, closed up 46% on first day of trading, after raising $345M in its IPO Emily Bary / MarketWatch : MarketWatch 2020-06-06 Emily Bary IPO, Emily Bary Related Coverage S-1/A - Shift4 Payments, Inc. SEC.gov Shift4 Payments surges nearly 44% in market debut Reuters Lehigh Valley's Shift4 Payments files to go public with initial price offering Morning Call Shift4 Payments prices IPO higher than expected, at $23 a share MarketWatch