Investing.com -- Celsius Holdings Inc. (NASDAQ: CELH) reported first-quarter results that exceeded analyst expectations, sending shares up around 6.3% premarket on Thursday.

Adjusted earnings per share of $0.41, beat the consensus estimate of $0.30 by $0.11. Revenue reached a record $782.6 million, surpassing the analyst estimate of $763.07 million and representing a 138% increase from $329.3 million in the same quarter last year.

The revenue surge was primarily driven by the acquisitions of Alani Nu and Rockstar Energy, which were completed in April and August 2025, respectively. Alani Nu generated approximately $368.1 million in sales during the quarter, while Rockstar Energy contributed $66.6 million.

The flagship CELSIUS brand revenue increased approximately 6% compared to the first quarter of 2025. International revenue totaled $35.3 million, up 55% YoY, driven by growth in the Nordics and expansion markets.

Gross profit margin declined to 48.3% from 52.3% in the prior-year period, reflecting the lower margin profiles of the acquired brands. However, the company noted that underlying raw material costs improved compared to the fourth quarter of 2025 as Alani Nu and Rockstar Energy were integrated into its purchasing structure.

"The first quarter of 2026 was a defining period for Celsius Holdings as we delivered record first-quarter revenue of $783 million, underscoring the power of our brands and the strength of our growth model," said John Fieldly, Chairman and CEO.

The company's portfolio, which includes CELSIUS, Alani Nu, and Rockstar Energy, held an approximate 20.9% dollar share of the U.S. energy drink category in the first quarter. In U.S. tracked channels, retail sales of the Celsius Holdings portfolio increased 29.8% for the 13-week period ended March 29, 2026.