SpaceX went public on June 12, 2026, priced at $135 per share. Within days the stock hit $225.64, then reversed and fell back below its IPO price, handing bears an opening they moved on fast.
According to data from analytics firm Ortex, short sellers have pocketed an estimated $8.7 billion in paper profits since the listing. The total short exposure figure cited in headlines, $15.5 billion, reflects the full notional value of shares on loan.
Every single dollar drop in SpaceX's share price translates to more than $300 million in short-side gains, per Ortex calculations. That math has worked out well for bears over the past six weeks.
Short interest climbed from 8% to 13% of the free float in late June alone, barely a fortnight after trading began. It has nearly quadrupled since then, sitting now at roughly 49% of SpaceX's freely tradable shares.
Ortex co-founder Peter Hillerberg described the environment as unusually favorable for short sellers. Almost half of all shares that can freely change hands are currently on loan to traders positioned for further declines.
The bear thesis centers on valuation concerns. Investors question whether SpaceX's revenue streams justify the price it commanded at listing, and the company's debt-funded push into artificial intelligence has added a fresh layer of skepticism.
The setup also carries serious squeeze risk. A $10 rally from current levels would put short sellers on the wrong side of more than $3 billion in paper losses, almost instantly. With nearly half the float already shorted, even a small positive catalyst could trigger a sharp upward move.
Musk has a documented track record of fighting back against short sellers publicly, most memorably during Tesla's short squeeze years. Whether history repeats itself with SpaceX is the question traders on both sides are sitting with right now.
This article is for informational purposes only and does not constitute financial advice or a recommendation to buy or sell any security.
