LaBranche & Co. | 354 followers on LinkedIn. LaBranche & Co., Inc., through its subsidiaries, operates as a registered broker-dealer. LaBranche & Co. particularly specializes in options, futures, and mostly exchange-traded funds (ETFs) on various worldwide exchanges, and operates as a market-marker in ETFs worldwide, options and futures on many exchanges. LaBranche & Co. was founded in 1924 and is based in New York, New York.