Celsius Holdings Inc. /zigman2/quotes/205976348/composite CELH -3.06% , parent to the fitness drink brand Celsius, has appointed John Fieldly as chief executive officer and interim chief financial officer, effective immediately. Fieldly has served in both roles on an interim basis since March 2017. Fieldly has been with the company for more than six years. Celsius Holdings was founded in April 2004. Celsius shares are up nearly 58% for the past year, while the S&P 500 index /zigman2/quotes/210599714/realtime SPX +1.05% is up 14.8% for the period.