Celsius is rewarding investors in 2025, but a big event could change that next year.Shares of Celsius Holdings (CELH 0.31%) have been as bubbly as its namesake sparkling functional beverages. The beverage stock is up an effervescent 37% this year, more than doubling the S&P 500's comparable 16% return. Celsius stock was trading even higher at one point but has recently pulled back by a third from its peak value.A lot has gone right for Celsius in 2025. It scored a timely acquisition of an ascending lifestyl ...