What happened

The stock market ended a rocky Thursday session generally higher. The Dow Jones Industrial Average rose by about 0.3%, the  S&P 500 finished 1.5% higher, and the tech-heavy Nasdaq popped by 3.3%.

Despite the general outperformance of technology stocks, though, cloud communications company Bandwidth (BAND 1.85%) was having a terrible day, with shares down by 32.1%. In fact, the last time Bandwidth's share price was this low was in 2018.

So what

As you might expect, Bandwidth's move lower was driven by its fourth-quarter earnings report.  But at first glance, that report might not seem too bad. The company beat analysts' estimates on both the top and bottom lines, and posted an adjusted profit when a small loss had been expected.

However, there's no recipe for a post-earnings drop that is quite as effective as offering weak guidance, and that's exactly what management did. Bandwidth is guiding for a per-share loss in the $0.07 to $0.11 range in the first quarter, while the consensus projection from analysts had been for a $0.07 per share profit. Revenue guidance came in nearly $4 million shy of expectations at the midpoint. And guidance for the full year was weak for both the top  and bottom lines as well.

Frustrated man at laptop.

Image source: Getty Images.

Now what

In simple terms, management expects Bandwidth's growth to slow in 2022. On a sequential basis, the company is forecasting flat revenue for the first quarter, and even the high end of its 2022 revenue guidance is calling for just 13% year-over-year growth. It's not surprising why these metrics wouldn't get investors too excited about a cloud services company that hasn't achieved consistent profitability yet.