Looking at the universe of stocks we cover at Dividend Channel, on 5/15/13, BGC Partners Class A ( BGCP) will trade ex-dividend, for its quarterly dividend of $0.12, payable on 5/31/13. As a percentage of BGCP's recent stock price of $5.76, this dividend works out to approximately 2.08%, so look for shares of BGC Partners Class A to trade 2.08% lower — all else being equal — when BGCP shares open for trading on 5/15/13.Below is a dividend history chart for BGCP, showing historical dividends prior to the most recent $0.12 declared by BGC Partners Class A: In general, dividends are not always predictable; but looking at the history above can help in judging whether the most recent dividend from BGCP is likely to continue, and whether the current estimated yield of 8.33% on annualized basis is a reasonable expectation of annual yield going forward. The chart below shows the one year performance of BGCP shares, versus its 200 day moving average: Looking at the chart above, BGCP's low point in its 52 week range is $3.11 per share, with $6.64 as the 52 week high point — that compares with a last trade of $5.78. According to the ETF Finder at ETF Channel, BGCP makes up 3.96% of the iShares Dow Jones U.S. Broker-Dealers Index Fund ETF ( IAI) which is trading lower by about 0.1% on the day Monday. In Monday trading, BGC Partners Class A shares are currently off about 0.3% on the day.