Celsius Holdings soars on upbeat quarterly results

** Shares of energy drink maker Celsius Holdings CELH.O jumps ~20% to $51.45 premarket

** Co beats estimates for Q2 results on demand for energy drinks and gains from its Alani Nu acquisition

** Posts quarterly revenue of $739.3 million above estimates of $651.5 million, and adjusted EPS of 47 cents above estimates of 23 cents - data compiled by LSEG

** Up to last close, stock has risen 62.3% YTD