Shares of Vertiv Holdings tumbled after the data-infrastructure company's second-quarter revenue missed expectations and guidance failed to impress Wall Street.

Vertiv on Wednesday posted adjusted earnings of $1.52 a share, up from 95 cents a year ago and above Wall Street expectations for $1.42. Sales grew 24% to $3.27 billion but missed the analyst consensus call for $3.38 billion, according to FactSet.

The company also updated its full-year outlook. Vertiv forecasts adjusted earnings of $6.65 to $6.75 a share on net sales of $13.8 billion to $14 billion. The company previously expected earnings of $6.30 to $6.40 a share on sales ranging from $13.5 billion to $14 billion.

Wall Street expects full-year earnings of $6.49 a share with sales totaling $13.88 billion, according to FactSet.

For the third quarter, Vertiv guided for adjusted earnings of $1.77 to $1.83 a share with sales coming in between $3.65 billion and $3.85 billion. At the midpoint, that guidance is mostly in-line with Wall Street's third-quarter expectation for earnings of $1.79 a share with sales of $3.71 billion, according to FactSet.

"Demand for AI and general compute continues to intensify and with each technology advancement, deployments grow more complex and more infrastructure-intensive," CEO Giordano Albertazzi said in a press release. "Our pipelines continue to strengthen as the market expands globally."

Vertiv stock sank 12% to $234.18 in premarket trading on Wednesday after ending Tuesday down 6.3%. Shares have gained 66% this year and 89% over the past 12 months.