Close-up of two cans of Celsius energy drink - John Parra/Getty ImagesMaybe you didn't hear about the Celsius energy drink brand until the rapper Flo Rida sued it in 2021. By fiscal Q3 2023, Celsius was the third-largest energy drink brand in the U.S., holding 8.6% of the entire market share. From the beginning, Celsius has been branded as a "fitness drink" rather than an energy drink with its mantra "Live Fit." It presents itself as a low-sugar, healthy alternative energy drink that doesn't induce the jitters. As of February 2023, Celsius Holdings had an estimated net worth of $13.53 billion.