Looking at the universe of stocks we cover at Dividend Channel, on 9/8/15, Theravance Inc (THRX), CNO Financial Group Inc (CNO), and OUTFRONT Media Inc (OUT) will all trade ex-dividend for their respective upcoming dividends. Theravance Inc will pay its quarterly dividend of $0.25 on 9/30/15, CNO Financial Group Inc will pay its quarterly dividend of $0.07 on 9/24/15, and OUTFRONT Media Inc will pay its quarterly dividend of $0.34 on 9/30/15.

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As a percentage of THRX's recent stock price of $15.81, this dividend works out to approximately 1.58%, so look for shares of Theravance Inc to trade 1.58% lower — all else being equal — when THRX shares open for trading on 9/8/15. Similarly, investors should look for CNO to open 0.40% lower in price and for OUT to open 1.51% lower, all else being equal.

Below are dividend history charts for THRX, CNO, and OUT, showing historical dividends prior to the most recent ones declared.

Theravance Inc (THRX):

THRX+Dividend+History+Chart

CNO Financial Group Inc (CNO):

CNO+Dividend+History+Chart

OUTFRONT Media Inc (OUT):

OUT+Dividend+History+Chart

In general, dividends are not always predictable, following the ups and downs of company profits over time. Therefore, a good first due diligence step in forming an expectation of annual yield going forward, is looking at the history above, for a sense of stability over time. This can help in judging whether the most recent dividends from these companies are likely to continue. If they do continue, the current estimated yields on annualized basis would be 6.32% for Theravance Inc, 1.59% for CNO Financial Group Inc, and 6.02% for OUTFRONT Media Inc.

In Friday trading, Theravance Inc shares are currently off about 0.7%, CNO Financial Group Inc shares are down about 0.8%, and OUTFRONT Media Inc shares are off about 0.5% on the day.