Sandler O’Neill + Partners, L.P. is an investment banking firm and broker-dealer focused on the financial services sector.
Since its founding in 1988, the firm has sought to provide banks, thrifts and other financial services companies with an alternative to large Wall Street banking firms.
Based on the company’s public LinkedIn information, supplied through RevenueBase.
The firm serves a wide variety of financial firms nationwide and increasingly around the globe.
The firm provides merger and acquisition advisory, capital markets, fixed income and equity trading and sales, equity research, balance sheet management, mortgage finance, and consulting services to financial institutions and their investors.
Source: LinkedIn company description · Retrieved October 13, 2026
Supported appearances on published RevenueBase lists, including available memberships beyond displayed rankings.
Positions describe ordering within each source list. See how lists are built ↗
Embeddable award for your website
Open the published source list.Snapshot: September 19, 2026
RevenueBase prepared this profile from the company’s public LinkedIn information and RevenueBase company data. These source records were retrieved on October 13, 2026. AI helped summarize these sources, with a separate automated check against the source text completed on November 4, 2026. Directory positions use company-contact counts from separate saved list snapshots dated September 18, 2026, September 19, 2026, September 21, 2026, September 26, 2026 and September 27, 2026. How the company lists are built.
Share a correction, your relationship to the company, and supporting sources. Requests are reviewed before changes are published.
Explore more companies by name, headquarters and business focus.