( Alcoa share price movement brought current in this update.)BOSTON ( TheStreet) -- Some Dow stocks perform better than others after reporting second-quarter earnings results. The following five Dow components have notched the biggest gains in the day after posting quarterly numbers in July and August over the past five years. History can be a guide, but nothing is a sure bet. Shares of Alcoa ( AA), typically the first Dow company to publish earnings every quarter, tend to fall following second-quarter results. The aluminum maker said yesterday after the market closed that it swung to a second-quarter profit of 13 cents share, compared with a year-earlier loss of 47 cents a share. While the average return for Alcoa shares has been negative over the past five years, the stock rose 1.6% to $11.04 Tuesday. 5. AT&T ( T) Reporting Date: Thursday, July 22 (before market opens) Historical Price Performance: Over the past five years, AT&T shares have returned an average of 1.9% on the day the communications giant reports second-quarter results. Analyst Consensus: AT&T should report a second-quarter profit of 57 cents a share, according to a Thomson Reuters poll of 30 analysts. However, analysts have cut their estimates over the past month by an average of 1.1%. Most recently, Cowen & Co. and Bank of America/Merrill Lynch analysts reduced their second-quarter earnings estimates, while Wells Fargo Securities and Macquarie Research raised theirs.