 Shares of Peloton Interactive Inc. PTON, 8.23 rallied 2.7 in premarket trading Wednesday, after the at-home fitness company announced an expanded collaboration with Amazon.com Inc. AMZN, 0.46 in the U.K. and Germany. The company said the Peloton Bike, Guide and certain accessories are now available in Amazons U.K. store for in-home delivery, and will be available in Amazons German store in the coming weeks. 