Space Exploration Technologies (SPCX -3.15%) went public in June and immediately became one of the market’s biggest battleground stocks. While the company’s share price has seen significant valuation swings and is down roughly 34% from its lifetime high, it has also seen strong pricing support above the $135 per share at which it was listed for its initial public offering (IPO). The stock is also currently roughly in line with the $150-per-share price at which it opened on the day of its IPO.

On the other hand, SpaceX stock is on the verge of another major lockup expiration — an event that will make a large tranche of shares available for sale by insider owners. Here’s what history says that could mean for other shareholders.

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