Updated from 4:04 p.m. ETAluminum makers were tarnished on Thursday after the Chinese government didn't announce as big a stimulus package as expected. Alcoa ( AA), a component of the Dow Jones Industrial Average, was down 98 cents, or 15.7% to $5.26. Since June 2008, aluminum has fallen to 62 cents a pound from about $1.50. Charles Bradford of Bradford Research said analysts could be reducing their first-quarter forecasts for Alcoa as the quarter ends. Analysts surveyed by Thomson Reuters expect Alcoa to lose 38 cents a share in the quarter. Century Aluminum ( CENX) was down 20% or 30 cents to $1.20, and Kaiser Aluminum ( KALU) fell 15.3% or $3.02 to $16.74. Aluminum Corp. of China ( ACH) saw its American depositary shares fall 8.9% or $1.19 to $12.12. Shares of Tredegar ( TG) fell 98 cents or 6.2% to $14.94. The company on Thursday announced a 4-cent-a-share dividend.