SpaceX has been awarded investment-grade credit ratings by all three major agencies just days after its record stock market debut, even as its newly listed shares slid sharply on Thursday.

SpaceX's critics said its eye-popping valuation wasn't justified heading into its IPO. It's turning into a hidden weapon.

SpaceX secures a Baa1 investment-grade rating from Moody's alongside its $75B IPO, revealing 18,712 BTC worth $1.29 billion on its corporate balance sheet.