Rubrik, a data network security company that raised more than $500 million during its privatization, filed for an IPO after the close of business on Monday. Rubrik's choice to go public now, following the IPOs of Reddit and Astera Labs, could indicate that the IPO market for tech companies is heating up. As a private market company, Rubrik last raised money in 2019, where it closed a $261 million round at a $3.6 billion post-investment valuation, according to Crunchbase.
Read MoreRubrik's IPO filing hints at thaw in tech IPO market