Sandler O'Neill and Partners

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Sandler O’Neill + Partners, L.P
Industry Investment banking
Founded 1988
Headquarters 1251 Avenue of the Americas
Key people
James J. Dunne III, Senior Managing Principal
Jonathan J. Doyle, Senior Managing Principal

Sandler O’Neill + Partners, L.P., is a full-service investment banking firm and broker-dealer specializing in the financial services sector.[1] It is headquartered in New York City, and has offices in Boston, Chicago, San Francisco and Atlanta.

The firm provides investment banking services to financial institutions and their investors. Its services include merger and acquisition advisory, capital markets, fixed income and equity trading and sales, equity research, balance sheet management, mortgage finance, and consulting services. It has retained its private partnership structure and it perennially ranks among the top advisers on bank and thrift mergers as well as in capital raising.


Sandler O’Neill + Partners, L.P. was founded in 1988 by Herman S. Sandler, Thomas F. O'Neill, and four other executives from Bear Stearns. Tough today it serves companies of all sizes, the firm was founded with an emphasis on community and mid-size banks, as its founders saw that smaller financial institutions were underserved.

Sandler's largest office is at 1251 Avenue of the Americas, New York City, NY

Today, the firm ranks among the best performing in the financial services sector, advising on mergers and acquisitions and capital raising. It is one of the last private investment banks on Wall Street, after other firms went public following Goldman Sachs in the early 2000s. In 2010, the firm sold a substantial minority stake in the company to two private equity firms: the Carlyle Group and Kelso & Company.[2] The firm is currently led by James J. Dunne III, who left Bear Stearns in 1988 to help found Sandler, and Jonathan Doyle, who joined the firm in 1990. Both serve as senior managing principals of the firm.[3]

September 11th Attacks[edit]

On September 11, 2001 the firm which was headquartered on the 104th floor of the South Tower of the World Trade Center, lost sixty-six of its one hundred and seventy one employees, forty percent of its overall workforce. One third of the firm’s partners, almost the entire equity desk, the entire syndicate desk, and all the firm’s bond traders died during the attack. Among those lost were Herman Sandler and Christopher Quackenbush, two of three senior executives who managed the firm. In addition to personnel, the company lost its entire computer system and nearly all of its records in the destruction.

On September 19th, three days after the U.S. financial markets reopened, Dunne said on CNBC that Sandler O'Neill was open for business, having restarted operations as early as September 12th. After the attacks, the firm operated temporarily out of the Solow Building, in space provided by Banc of America.

In order to help victims’ families after the attack, the firm founded the Sandler O’Neill Assistance Foundation. The Foundation provides funding to cover the educational expenses of children of employees who died on September 11th. Sandler also provided immediate aid for the families, such as grief counseling and funeral planning.

See also[edit]


  1. ^ "An Overview". Sandler O'Neill. Retrieved 30 June 2015. 
  2. ^ Staff, Dealbook (4 November 2010). "Sandler O’Neill Sells a Stake to Carlyle and Kelso". The New York Times. Retrieved 1 July 2015. 
  3. ^ Craig, Susanne. "Proudly Private, a Wall Street Brokerage Firm Marches On". The New York Times. 

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