Private company

Sandler O'Neill and Partners

Logo: Sandler O'Neill, Public domain, via Wikimedia Commons3

American investment bank

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.2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

1988Founded1
1251 Avenue of the Americas
Photo: The original uploader was DavidShankBone at English Wikipedia ., Public domain, via Wikimedia Commons4

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.2

Timeline

  1. 1988Founded Founded1