Zoom surges 72% on IPO, T-Mobile jumps into banking, and tobacco/vaping stocks drop on “T21”

Summary: Out of last week’s 8 IPOs, we’re focusing on Zoom — The shockingly profitable tech company with a fascinating CEO. T-Mobile gets into banking with a 4% checking account (it comes with a couple asterisks). And tobacco stocks dropped on a major proposal to up the legal age to 21 – And that’ll cover vaping, too.