AB Bernstein | 37,063 followers on LinkedIn. Bernstein is widely recognized as Wall Street's premier sell-side research and brokerage firm, with a global equity trading platform that spans the U.S., Europe, and Asia. Our firm was founded in the U.S. in 1967 and in the U.K. in 1999. Our research and trading capabilities are sought out by leading investment managers around the world, and we are annually ranked at the top of our industry by acknowledged arbiters.