Looking at the universe of stocks we cover at Dividend Channel, on 3/27/14, Atlantic Power Corp (AT - Get Report) will trade ex-dividend, for its monthly dividend of $0.0333, payable on 4/30/14. As a percentage of AT's recent stock price of $2.75, this dividend works out to approximately 1.21%, so look for shares of Atlantic Power Corp to trade 1.21% lower — all else being equal — when AT shares open for trading on 3/27/14.

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Below is a dividend history chart for AT, showing historical dividends prior to the most recent $0.0333 declared by Atlantic Power Corp:

AT+Dividend+History+Chart

In general, dividends are not always predictable; but looking at the history above can help in judging whether the most recent dividend from AT is likely to continue, and whether the current estimated yield of 14.55% on annualized basis is a reasonable expectation of annual yield going forward.

In Tuesday trading, Atlantic Power Corp shares are currently up about 1.5% on the day.