Uber’s core ride-sharing business continued to post strong growth in the second quarter, with bookings rising 22%. On the surface, that suggests demand for the company’s main service remains robust and that the ride-hailing operation is performing well.

Even so, the stock market reaction was muted to negative. Shares fell after the company released results that were described as mostly in line with expectations, while its guidance appears to have fallen short of what investors wanted to see.

That gap between operating strength and market sentiment helps explain why Uber stock struggled despite healthy ride-sharing numbers. Investors often reward companies not just for growth, but for delivering a clear upside surprise or offering an outlook that points to stronger momentum ahead.

In Uber’s case, the quarter showed that the ride-sharing business is booming, but that was not enough to lift the stock on its own. For Wall Street, the bigger issue appears to be whether earnings and future guidance can do more than simply meet expectations.