RYosha Archrock (NYSE:AROC) is riding strong compression market trends, and is cheaper than its top competitor. Company Profile AROC is an outsourced provider of natural gas compression services in the U.S. At the end of September, its fleet consisted of compression units with available horsepower (“HP”) of 3,773,000. Its fleet consists of mostly large compressors with 1,000 or more horsepower. The company operates in basins across the country, with a heavier concentration in oil driven shale plays, suc ...