Wall Street is placing a big bet against SpaceX (SPCX), and the size of that bet might surprise long-term bulls. Notably, two events are converging in early August, and both could shake up the stock in a big way. More News from BarchartSpaceX Stock Short Interest Spikes Ahead of Q2 EarningsShort interest in SpaceX's stock stood at 219.3 million shares as of July 29, according to data from S3 Partners cited by Bloomberg. In dollar terms, that bearish position is worth roughly $24.6 billion, more than the amount currently wagered against TSLA stock, Bloomberg reported. Borrowing shares to bet against SpaceX has also gotten pricier as more traders pile in.