Wheeling-Pittsburgh Corp. joined the Russell 3000 Index when the broad-market index was reconstituted June 25.

Membership in Russell's 21 U.S. equity indexes is determined primarily by market capitalization rankings and style attributes. Russell indexes are widely used by managers for index funds and as benchmarks for both passive and active investment strategies. More than $360 billion is invested in index funds based on Russell's indexes and an additional $850 billion is benchmarked to them. Investment managers who oversee these funds purchase shares of member stocks according to the company's weighting in the particular index.

Annual reconstitution of the Russell indexes captures the 3,000 largest U.S. stocks as of the end of May, ranking them by total market capitalization to create the Russell 3000. The largest 1,000 companies in the ranking comprise the Russell 1000 Index, while the remaining 2,000 companies become the widely used Russell 2000 Index.

Wheeling-Pittsburgh Steel Corp. is a metal products company with 3,100 employees in facilities located in Steubenville, Mingo Junction, Yorkville, and Martins Ferry, Ohio; Beech Bottom and Follansbee, W.Va.; and Allenport, Pa. The company's Wheeling Corrugating Division has 12 plants located throughout the United States.