Short sellers have increased their bets against SpaceX (NASDAQ:SPCX) ahead of the company's first public earnings report [1].

This surge in bearish activity signals a confrontation between institutional traders and the company's valuation. Investors are anticipating a potential price drop as the market prepares for a significant increase in share supply and the first official disclosure of the company's financial performance metrics [1], [5].

Notional short interest in SpaceX has climbed to $23.6 billion [3]. This figure now surpasses the short interest in Tesla, which stands at $22 billion [3]. The positioning has already yielded results for some; short sellers have racked up an estimated $8.7 billion in paper gains as the stock price slips toward its initial public offering price [2].

Much of the volatility is tied to a lock-up expiration scheduled for early August. This event will release hundreds of millions of locked-up shares into the open market [1], [5]. Traders believe this sudden influx of supply could put downward pressure on the stock price.

Activity in the options market is concentrated. Call options with a strike price of $330 currently dominate the trading volume [4]. These contracts represent bets that the stock will rise above that specific threshold, creating a tug-of-war between the call buyers and the massive short positions.

SpaceX shares continue to trade on the Nasdaq exchange in the U.S. [1], [2]. The company has not yet released its first quarterly earnings report since going public, leaving investors to rely on projections and trading patterns to gauge the company's health.

Notional short interest in SpaceX has climbed to $23.6 billion.

The concentration of short interest and specific call options suggests that SpaceX has become a primary battlefield for volatility traders. The combination of a first-time earnings release and a massive share unlock creates a 'perfect storm' of supply and sentiment risk. If the earnings report misses expectations or if the lock-up release triggers a sell-off, the stock could face a sharp correction; conversely, a strong report could trigger a short squeeze, forcing those with $23.6 billion in short positions to buy back shares at higher prices.