In this articleRIVNAFRMRBLXA Rivian R1T electric pickup truck during the company's IPO outside the Nasdaq MarketSite in New York, on Wednesday, Nov. 10, 2021.Bing Guan | Bloomberg | Getty ImagesSome of the year's hottest tech IPOs including Rivian, Affirm and Roblox plummeted in the market on Monday, as the tech-heavy Nasdaq sank into the negative.