SpaceX stock faces immediate pressure as up to 911.5 million shares unlock today—representing more than 140 percent of the company's current public float. The supply surge could test current valuation levels and raise near-term volatility risk.

This unlock follows a rough stretch for the stock. Shares fell 12 percent after the most recent earnings report, despite SpaceX beating revenue expectations and posting an unexpected profit from its artificial intelligence segment. The post-earnings selloff signals investor apprehension even before today's release.

Today's event is the first in a series of planned share releases. Additional unlocks are scheduled for Aug. 12 and 20 days later, creating a continuous flow of new shares into the market. More than four billion shares will become tradable by year-end, a supply overhang that could weigh on price performance regardless of operational results.

Watch trading volume and price action closely throughout the day. A supply surge this large forces a period of price discovery, where real buyer demand gets tested against fresh selling interest. Institutional buying activity will be the key stabilization signal. Long-term holders may view any sustained dip as a buying opportunity, but short-term traders face elevated downside risk.

The next major test arrives Aug. 12, when the second unlock will reveal how much absorption capacity the market actually has.