Platinum-Backed McGraw Hill Files for IPO Showing Narrowing Loss Platinum Equity-backed McGraw Hill Inc. filed for an initial public offering, a sign that private equity firms are resurfacing to take more of their portfolio companies public. Related Posts:Education Tech Firm McGraw Hill Raises $414.6 Million in IPOPeter Thiel-Backed Crypto Exchange Bullish Files for IPOBlockchain-Based Lender Figure Files Publicly for IPOEx-Nielsen Unit Files for US IPO That Could Target…Insurance Firm Accelerant Files for IPO, Disclosing…Spacecraft and Rocket Company Firefly Aerospace…See also Bose Angers Customers by Ending Cloud Streaming for Old Speakers