$SPCX is trading about 36% below its June peak, down around 2.7% on the session.
Another 328 million insider shares become eligible to sell on September 24, with a larger 1.3 billion-share tranche released two days after the Q3 report.
Greenlight's David Einhorn called the IPO a marker of a speculative top in his second-quarter letter, questioning the investment-grade rating.