Following is a list of the leading U.S. and global boutique investment banks.

Allegiance Capital – A private boutique investment bank offering products and services to middle-market companies with revenue up to $500 million. It also provides global reach through Globalscope Partners Ltd, an international M&A advisory firm. Allegiance was established in 1998 and is based in Dallas, TX with additional offices New York and Chicago.

Arma Partners LLP – An investment banking firm and M&A adviser specializing in the CMT sector (communications, media and technology). The company maintains offices in London, UK; New York, NY; Palo Alto, California, and Munich, Germany.

Alantra – A global investment bank specializing in middle market M&A advisory services. It was created in 2016 after the merger of Spanish N+1 and Boston-based C.W. Downer & Co. The firm has local teams in 20 countries including the United States, Mexico, Chile, Colombia, Argentina, Brazil, the UK, Germany, Italy, France, Switzerland, Austria, Sweden, Portugal, Spain, Greece, Belgium, the Netherlands, Ireland and China.

Berkery, Noyes & Co., LLC – One of the leading middle market investment banks with focus on mergers and acquisitions, debt and equity financing, and financial consulting services. The company has unique experience in the following areas: education, entertainment and leisure, financial technology, healthcare, media and marketing services, online and mobile segment, and software. Berkery, Noyes was founded in 1983 by Joseph W. Berkery and is headquartered in New York.

Cantor Fitzgerald, headquartered in New York, is a global investment bank providing services to middle market sector. It operates via following areas: equities, investment banking, fixed income & currencies, real estate, prime services and affiliates. The company is one of primary dealers in the United States that are authorized to trade government securities with the Federal Reserve Bank of New York. Cantor Fitzgerald was established in 1945 and maintains over 32 offices across North America, Europe, Asia and the Middle East. Howard William Lutnick is Chief Executive Officer and Chairman of the firm.

Cain Brothers & Company, a leader in M&A advisory, is a healthcare investment bank operating as a subsidiary of KeyBanc Capital Markets. With over 100 employees, it focuses exclusively on healthcare industry, medical technology and life sciences. The company was founded in 1982 and is headquartered in New York City.

Capstone Headwaters – One of the largest independent investment banks in the U.S. with over 160 highly seasoned professionals providing services in the following segments: aerospace and defense; building products; agriculture, construction and business services; consumer and retail; education and training; transportation and logistics, minerals and mining; energy and power; health and medical; industrial manufacturing and industrial technology; infrastructure finance and real estate.

Corporate Finance Associates (CFAW), headquartered in Los Angeles, is an international boutique investment bank providing M&A advisory services through more than 30 locations in the United States, United Kingdom, Belgium, Switzerland, Netherlands, Denmark and Ireland.

CSG Partners LLC is an American boutique investment bank with offices in New York, San Francisco, and Washington DC. It is a nation’s leader in ESOPs (employee stock ownership plans), mergers and acquisitions, and capital advisory services for middle-market businesses.

DCS Advisory – A leading North America-based M&A advisory firm created through integration of Sagent Advisors and Signal Hill LLC by Daiwa Securities Group. Sagent Advisors is a leading independent investment bank with offices in Chicago, New York and Tysons Corner.

Europa Partners Ltd – A boutique investment bank headquartered in London, UK. It offers services in the following fields: media, luxury goods, professional services, technology and insolubles (tricky issues). The company’s largest M&A transaction was a $650 million merger, largest debt fundraising - $450 million and largest equity fundraising - $85 million.

Fennebresque & Co is a leading investment bank and advisory firm focused on technology sector, life sciences, food, nutrition & agriculture; government services (ADGS), manufacturing & industrial, and consumer & retail. The company was established in 2007 and is headquartered in Charlotte, North Carolina with additional offices in Raleigh, San Diego, Charleston, and Des Moines.

Financo Inc is a retail & consumer boutique investment bank with offices in New York, Los Angeles and London. The company’s services include sell-side and buy-side M&A, financial sponsor advisory, growth capital and minority recapitalization transactions, family office & entrepreneur advisory, special situations, sports M&A and fairness opinions. The firm was establishes in 1971 by Gilbert Harrison.

Foros Group LLC is an American M&A advisory boutique providing financial advisory services to U.S. and international clients. The company was ranked among the top 15 M&A advisors and among the top 5 independent advisory firms in the United States by league table providers. Jean Edward Manas is Founder and Chief Financial Officer (CEO) of Foros. Financial Times called the firm one of the big fish among the boutique investment banks. The company was established in 2009 and is headquartered in New York.

Guggenheim Partners, headquartered in New York and Chicago, is a global investment bank with over 2,400 employees and assets under management of approximately $270 billion as of August 2019. It also has offices in Boston, Los Angeles, Atlanta, Houston, Dallas, Indianapolis, Rockville, San Francisco, St. Louis and abroad including London, Dublin, Dubai, Mumbai and Tokyo.

Keefe, Bruyette, & Woods, based in New York, is a full-service boutique investment bank focused exclusively on the financial services sector. It has additional locations in Atlanta; Austin, Texas; Chicago, Illinois; San Francisco, California; Richmond, Virginia; Boston, Massachusetts; Columbus, Ohio and Hartford, Connecticut as well as office abroad in London, United Kingdom. KBW is a division of Stifel Financial Corporation.

Ladenburg Thalmann, with offices in Miami, Boca Raton, Naples (Florida), Boston (Massachusetts), New York, Melville, and Calabasas, California, it provides strategic and financial advisory services to companies with a market value below $500 million. The firm’s business areas are independent brokerage & advisory, investment banking, capital markets, trust and estate planning, insurance services, and wealth and asset management. The company was founded in 1876 and employs over 1,500 full-time employees. Richard Lampen is CEO, President and Chairman.

Lancaster Pollard is mortgage and investment banking firm focused on serving healthcare and senior living sectors. The company was established in 1988 and is headquartered in Columbus, Ohio with regional offices in California, Colorado, Texas, Minnesota, Kansas, Georgia, Georgia and Pennsylvania.

Lincoln International LLC is an international boutique investment bank headquartered in Chicago, Illinois. It is ranked as a top global M&A advisor to the mid-market. The company offers mergers & acquisitions, capital advisory, joint ventures & partnering and valuations & opinions. The company is active in the following sectors: business services, energy, power & infrastructure, healthcare, consumer sector, industrials, and technology, media & telecom. The firm boasts 200+ transactions in 2018 of which over 50% transactions are cross-border.

Marathon Capital LLC is a North American investment bank specializing in the global power and infrastructure markets. It maintains offices in Chicago, San Francisco and New York as well as representative office in Halifax, Canada.

Marlin & Associates, with focus on financial technology, data and analytics, and healthcare market, is a boutique investment bank and strategic advisory firm headquartered in New York. Over 20 transactions on which the firm has advised have been recognized as Deal-of-the-Year. It also has offices in Washington DC, and Toronto, Canada.

Miller Buckfire & Co. is an international investment bank focused on corporate restructurings. The firm restructured more than $200 billion of debt and advised on more than $16 billion of mergers and acquisitions. Miller Buckfire operates as a subsidiary of Stifel Financial Corp.

Montgomery & Co (formerly Digital Coast Partners), headquartered in Santa Monica, California, was a leading investment bank for media and technology companies.

Raymond James, headquartered in St. Petersburg, Florida, has about 8,000 financial advisors in the U.S., Canada and abroad. In 2012 it acquired Memphis-based investment firm Morgan Keegan & Co; and in 2019 it acquired Silver Lane Advisors, a boutique investment bank focused on M&A in the financial sector.

Needham & Co. is an American boutique investment bank and asset management company with focus on growth companies. It was established in 1985 by George Needham, Raymond Godfrey and David Townes.

Panmure Gordon & Co – The UK-based stockbroker and investment bank. The firm is known for its close connection with the family of David Cameron. In 2017 Panmure Gordon was acquired by Ellsworthy Ltd, a division of Qatari investment bank QInvest.

PCE Investment Bankers, headquartered in Orlando, Florida, is an investment bank offering financial advisory services to mid-market businesses. It has branches Atlanta, Chicago and New York.

Roth Capital Partners, based in Newport Beach, California, is a privately owned company specializing in the small-cap public market. Roth Capital completed more than 320 merger, acquisition and advisory assignments. It is a member of FINRA (Financial Industry Regulatory Authority) and SIPC (Securities Investor Protection Corporation).

B. C. Ziegler & Company, headquartered in Chicago, is a privately-owned financial advisory firm focused on healthcare, senior living and education markets. It also specializes in general municipal and structured finance. The firm is licensed in all 50 states, D.C. and Puerto Rico. It is a member of FINRA and SIPC.

Sonenshine Partners – A private boutique investment bank with offices in New York and London. The firm executed on more than $100 billion in transactions.

Stephens Inc, based in Little Rock, Arkansas, is one of the largest private investment banks in the United States with 28 offices nationwide.

Sucsy, Fischer & Company, established in 1972, is a privately held firm headquartered in Highland Park, Illinois, United States.

WR Hambrecht + Co is a San Francisco-based investment bank founded by William Robert Hambrecht (also known as Bill) in 1998.

Top Global Boutique Investment Banks

Here is the list of the largest global boutique investment banks based on revenue.

Allen & Company
Cowen
Perella Weinberg Partners
Lazard
Rothschild
Evercore Partners
Greenhill & Co.
Houlihan Lokey
Jefferies & Co.
Centerview Partners
Oppenheimer & Co.
Sandler O’Neill Partners
Moelis & Company
PJT Partners (formerly Blackstone)