Get ready for a little Christmas in July: There’s a new baby blue pool in Yellowstone National Park, and science suggests it started forming on the winter holiday.

FIDELITY BLUE CHIP GROWTH COMMINGLED POOL CLASS O- Performance charts including intraday, historical charts and prices and keydata.

FIDELITY® BLUE CHIP GROWTH COMMINGLED POOL CLASS D- Performance charts including intraday, historical charts and prices and keydata.