Shares of the following companies may have unusual moves in U.S. trading tomorrow. Stock symbols are in parentheses, and prices are as of 6 p.m. in New York.
Standard & Poor’s 500 Index futures expiring in June fell 0.2 percent to 1,317.60.
Alcoa Inc. (AA US) fell 3.3 percent to $17.18. The largest U.S. aluminum producer reported first-quarter revenue of $5.96 billion, missing the average estimate of $6.06 billion from eight analysts in the Bloomberg survey.
Century Aluminum Co. (CENX US), the second-largest U.S. producer of the metal, declined 1.4 percent to $19.38.
Durect Corp. (DRRX US): The maker of drug-delivery systems said a phase II clinical trial of Eladur, an experimental patch to treat the pain from shingles, didn’t make enough of a difference to meet the primary endpoint.
Micrel Inc. (MCRL US): The maker of chips for computers and communication gear said first-quarter profit was no more than 14 cents a share, missing its earlier forecast of 17 cents a share to 19 cents as well as the average analyst estimate of 18 cents, according to Bloomberg data.
Safe Bulkers Inc. (SB US) lost 7.5 percent to $8.57. The provider of marine drybulk transportation services said it will offer 5 million shares to fund ship acquisitions and other general corporate purposes. Additional stock can dilute the value of existing shares.
WMS Industries Inc. (WMS US) declined 8.9 percent to $33. The maker of Monopoly and Wizard of Oz slot machines reported third-quarter profit of no more than 42 cents a share. Analysts had predicted 52 cents, the average of 19 estimates in a Bloomberg survey.