WSJ-reported figures show Tesla shares falling 14 percent and SpaceX losing an estimated $1 trillion in value over one month, with short sellers realizing $15.5 billion in profits and Elon Musk absorbing an $18 billion personal loss. Short interest in SpaceX reached 32 percent of float according to the same reporting. Analyses differ on whether the moves represent market discipline, concentrated wealth risks, or questions over private-company valuation methods.