Simpson Thacher has once again been ranked among the leading law firms in the United States in The Legal 500 United States 2015. The Firm was recognized in 43 practice areas, including a total of 19 rankings in the top tier. 
Simpson Thacher was ranked #1 in the following practice areas:
        Antitrust
        #1 Merger Control
        Finance
        #1 Bank Lending (including other sources of financing) 
        #1 Capital Markets: Debt Offerings - advice to issuers
        #1 Capital Markets: Debt Offerings - advice to managers
        #1 Capital Markets: Equity Offerings - advice to issuers
        #1 Capital Markets: Equity Offerings - advice to managers
        #1 Capital Markets: Global Offerings - advice to financial institutions
        #1 Capital Markets: High-Yield Debt Offerings - advice to issuers
        #1 Financial Services: Litigation
        #1 Not-for-profit (nonprofit and tax exempt organizations) 
        Industry Focus
        #1 Insurance: Advice to insurers 
        Investment Fund Formation and Management 
        #1 Private Equity Funds
        Labor and Employment 
        #1 Employee Benefits and Executive Compensation
        Litigation
        #1 Securities: Shareholder Litigation
        Mergers, Acquisitions & Buyouts 
        #1 M&A: Litigation Defense
        #1 M&A: Large-Deals ($1bn+) 
        #1 Private Equity Buyouts
        Real Estate and Construction
        #1 Real Estate
        Tax
        #1 Domestic Tax
In addition, the following attorneys were recognized as “Leading Lawyers” in their respective fields of practice: 
        Kevin J. Arquit 
        Thomas H. Bell 
        Joshua Ford Bonnie 
        Richard Capelouto 
        Sarah E. Cogan 
        James D. Cross 
        Adeeb R. Fadil
        Henry B. Gutman 
        Gary I. Horowitz 
        Peter E. Kazanoff 
        Lori E. Lesser 
        Lee A. Meyerson 
        Wilson S. Neely 
        Barry R. Ostrager 
        Laura Palma
        Gregory J. Ressa 
        Thomas C. Rice 
        Brian D. Robbins 
        Arthur D. Robinson 
        Patrick J. Ryan 
        David A. Shevlin 
        Mary Kay Vyskocil 
        Michael W. Wolitzer 
        Jonathan K. Youngwood 
In addition to the practice areas noted above, the Firm was recognized by The Legal 500 United States in the following practice areas:
        Antitrust: Civil Litigation/Class Actions 
        Finance: Asset Finance and Leasing 
        Finance: Corporate Restructuring (including bankruptcy)  
        Finance: Capital Markets: Global Offerings - advice to corporates 
        Finance: Capital Markets: High-Yield Debt Offerings - advice to managers 
        Finance: Financial Services: Regulatory  
        Finance: Project Finance: Advice to Lender  
        Finance: Project Finance: Advice to Sponsor  
        Finance: Structured Finance 
        Industry Focus: Energy: Renewable/Alternative  
        Industry Focus: Energy: Transactions 
        Industry Focus: Environment: Transactional and Regulatory  
        Industry Focus: Insurance: Non-contentious  
        Investment Fund Formation and Management: Alternative/Hedge Funds  
        Investment Fund Formation and Management: Mutual/Registered Funds  
        Litigation: Appellate  
        Litigation: Commercial Litigation  
        Litigation: International Arbitration  
        Litigation: Leading Trial Lawyers 
        Litigation: Product Liability and Mass Tort Defense: Consumer Products (including tobacco) 
        Litigation: White-Collar Criminal Defense 
        Media, Technology and Telecoms: Technology: Transactions 
        Real Estate and Construction: Real Estate Investment Trusts (REITs) 
        Tax: International Tax 
The Legal 500, a worldwide legal reference guide, ranks law firms and attorneys based on extensive research surveying corporate counsel and law firm clients throughout the country.