Sandler O'Neill and Partners

Sandler O'Neill + Partners, L.P
Company typePartnership
IndustryInvestment banking
Founded1988 (1988)
Defunct2019
FateAcquired by Piper Jaffray, now Piper Sandler Companies
Headquarters1251 Avenue of the Americas, New York, New York, US
Key people
James J. Dunne III, Senior Managing Principal
Jonathan J. Doyle, Senior Managing Principal
Websitewww.sandleroneill.com

Sandler O'Neill + Partners, L.P., (Sandler O'Neill) was a full-service investment banking firm and broker-dealer specializing in the financial services sector. It was headquartered in New York City, and had offices in Boston, Chicago, San Francisco and Atlanta. The firm also operated a mortgage finance company and registered investment adviser based in Memphis.