Looking at the universe of stocks we cover at Dividend Channel, on 8/7/14, Tsakos Energy Navigation Ltd. ( TNP) will trade ex-dividend, for its quarterly dividend of $0.05, payable on 8/14/14. As a percentage of TNP's recent stock price of $6.68, this dividend works out to approximately 0.75%, so look for shares of Tsakos Energy Navigation Ltd. to trade 0.75% lower — all else being equal — when TNP shares open for trading on 8/7/14.Below is a dividend history chart for TNP, showing historical dividends prior to the most recent $0.05 declared by Tsakos Energy Navigation Ltd.: In general, dividends are not always predictable; but looking at the history above can help in judging whether the most recent dividend from TNP is likely to continue, and whether the current estimated yield of 2.99% on annualized basis is a reasonable expectation of annual yield going forward. The chart below shows the one year performance of TNP shares, versus its 200 day moving average: Looking at the chart above, TNP's low point in its 52 week range is $4.52 per share, with $8.48 as the 52 week high point — that compares with a last trade of $6.73. According to the ETF Finder at ETF Channel, TNP makes up 2.35% of the Guggenheim Shipping ETF ( SEA) which is trading lower by about 0.4% on the day Tuesday. In Tuesday trading, Tsakos Energy Navigation Ltd. shares are currently up about 0.9% on the day.