A massive week for IPOs delivered hefty fees to Goldman Sachs, Morgan Stanley and other Wall street investment banks. : From Krispy Kreme to China's Didi Chuxing, the busiest week for U.S. IPOs in 17 years produced a windfall for Wall Street's top investment banks. A cybersecurity company, drug developers and a Turkish e-commerce platform were all in on the action. At least 14 companies raised $100 million or more in offerings on the Nasdaq and New York Stock Exchange, the most active stretch for debuts since 2004.