Brooks Automation Inc ( NASD: BRKS) is a member of the Russell 3000, giving it special status as one of the largest 3000 companies on the U.S. stock markets.
In the case of Brooks Automation Inc, looking at the history chart for BRKS below can help in judging whether the most recent dividend is likely to continue, and in turn whether it is a reasonable expectation to expect a 4% annual yield.