A 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 Images Some of the year’s hottest tech IPOs including Rivian, Affirm and Roblox plummeted in the market on Monday, as the tech-heavy Nasdaq sank more than 1{a78e43caf781a4748142ac77894e52b42fd2247cba0219deedaee5032d61bfc9}.