AROC vs AB Comparison

Archrock Inc is an energy infrastructure company focused on midstream natural gas compression. It is a provider of natural gas compression services, based on total compression fleet horsepower, to customers across the United States and a supplier of aftermarket services to customers that own compression equipment. The company operates through two segments: contract operations and aftermarket services. The contract operations segment includes designing, sourcing, owning, installing, operating, servicing, repairing, and maintaining its owned fleet of natural gas compression equipment, and generates the maximum revenue. The aftermarket services segment provides operations, maintenance, overhaul, and reconfiguration services, and sales of parts and components.

AllianceBernstein provides investment management services to institutional (41% of assets under management), retail (41%), and private (18%) clients through products that includes mutual funds, hedge funds, and separately managed accounts. At the end of January 2026, the company had $875.0 billion in managed assets, composed primarily of fixed-income (36% of AUM) and equity (41%) strategies, with other investments (made up of asset allocation services and certain other alternative investments) accounting for the remainder.