ARES vs WST Comparison

Ares Management is one of the world's largest alternative-asset managers, with $622.5 billion in total assets under management, or AUM, including $384.9 billion in fee-earning AUM, at the end of 2025. The company has four main business segments: credit strategies ($406.9 billion in total AUM and $249.8 billion in fee-earning AUM), private equity, ($25.3 billion/$14.4 billion), real estate/real assets ($139.1 billion/$84.1 billion), and other alternatives ($51.2 billion/$36.6 billion). The firm primarily serves institutional investors (80% of AUM) and high-net-worth individuals (20%). Ares operates through more than 35 offices in over 15 countries around the globe.

West Pharmaceutical Services is based in Pennsylvania and is a key supplier to firms in the pharmaceutical, biotechnology, and generic drug industries. West sells elastomer-based packaging components (including stoppers, seals, and plungers), nonglass containment solutions, and auto-injectors for injectable drugs, which include large-molecule biologics, peptides such as GLP-1 receptor agonists, and small-molecule drugs. The company reports in two segments: proprietary products (about 80% of total revenue) and contract-manufactured products (about 20% of total revenue). It generates approximately 55% of its revenue from international markets and 45% from the United States.