Looking at the universe of stocks we cover at Dividend Channel, on 8/12/22, Allete Inc (Symbol: ALE), Southern Company (Symbol: SO), and ONE Gas, Inc. (Symbol: OGS) will all trade ex-dividend for their respective upcoming dividends. Allete Inc will pay its quarterly dividend of $0.65 on 9/1/22, Southern Company will pay its quarterly dividend of $0.68 on 9/6/22, and ONE Gas, Inc. will pay its quarterly dividend of $0.62 on 9/1/22. As a percentage of ALE's recent stock price of $62.59, this dividend works out to approximately 1.04%, so look for shares of Allete Inc to trade 1.04% lower — all else being equal — when ALE shares open for trading on 8/12/22. Similarly, investors should look for SO to open 0.87% lower in price and for OGS to open 0.75% lower, all else being equal. Below are dividend history charts for ALE, SO, and OGS, showing historical dividends prior to the most recent ones declared. Allete Inc (Symbol: ALE): Southern Company (Symbol: SO): ONE Gas, Inc. (Symbol: OGS): 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 4.15% for Allete Inc, 3.46% for Southern Company, and 3.00% for ONE Gas, Inc.. Free Report: Top 7%+ Dividends (paid monthly) In Wednesday trading, Allete Inc shares are currently up about 0.7%, Southern Company shares are up about 0.3%, and ONE Gas, Inc. shares are up about 0.4% on the day. The views and opinions expressed herein are the views and opinions of the author and do not necessarily reflect those of Nasdaq, Inc.