More Dangerous Than Earnings — What a Lock-Up Expiry Is and Why It Tanks Stocks

SpaceX just dropped its first-ever earnings report since going public. Losses narrowed, revenue climbed. By any measure, it looked decent. Yet the stock was down nearly 10% in pre-market trading. So what actually happened?

Something bigger than earnings hit the tape

On the same day, 910 million SpaceX shares became eligible to be sold on the open market. That's a lock-up expiry — and in many cases, the market cares about that more than any earnings beat. Today was one of those cases.

What exactly is a lock-up?

When a company goes public, early investors and employees already hold shares. If they could dump everything on day one, the stock would get crushed by the sheer volume of sellers. So there's a rule: those insiders can't sell for a set period after the IPO. That restriction is the lock-up. When it expires, the floodgates open.

Lock-ups typically last 90 to 180 days after a company's IPO. The day it expires is called the lock-up expiry date. From that point on, early shareholders are free to sell whenever they want.

Just how big is 910 million shares?

It's a massive number. In SpaceX's case, those 910 million shares represent a significant chunk of the total float. The market doesn't wait for those shares to actually hit the tape — the possibility of that supply showing up is enough to push prices down. Uncertainty does the damage before a single share is sold.

Does a lock-up expiry always tank the stock?

Not automatically. Insiders don't have to sell just because they can. If they believe in the company's future, plenty of them will hold. In fact, stocks backed by strong fundamentals and a compelling growth story often hold up just fine — or even rally — after a lock-up expires. When buyers trust the company, they absorb whatever supply comes to market.

SpaceX is tightening its losses and growing revenue. But right now, the market doesn't know how many of those 910 million shares will actually get sold. That uncertainty is what's weighing on the stock price — not the earnings themselves.

Today's SpaceX move is a good reminder: good news doesn't always move stocks the way you'd expect. Supply and demand matter just as much as fundamentals. Knowing how much stock can hit the market — and when — is a core part of understanding any public company.