Monday's Late Winners & Losers

Earnings news was driving a number of stocks lower in after-hours trading, including Dow Jones Industrial Average component Alcoa(AA Quote).

Alcoa, whose earnings report is the unofficial kickoff to the second-quarter earnings season, was losing 1.1% after its second-quarter profit slipped vs. the year-ago period. The aluminum producer reported earnings of $715 million, or 81 cents a share, down from the year-ago $744 million, or 85 cents a share. Sales rose to $8.07 billion from $7.8 billion a year earlier. Analysts polled by Thomson Financial expected earnings of 81 cents a share and sales of $8.34 billion. In after-hours trading, Alcoa shares were losing 48 cents to $41.94.

Shares of lubricant maker WD-40(WDFC Quote) slipped 9.4% after the company said it did not expect to meet Wall Street's full-year expectations. The company said it expects net income of $29.1 million to $30.2 million, or $1.70 to $1.75 per share. The company expects sales of $307 million to $313 million. Analysts polled by Thomson Financial expected earnings of $1.78 per share on sales of $313.6 million. In late trading, shares slipped $3.48 to $33.49. ...