(Updates with the latest stock price movement in the headline and first paragraph.)
GrafTech International (EAF) shares were up more than 18% in Tuesday trading after the company said it has raised graphite electrode prices by at least 30%, effective immediately for all open commercial negotiations.
The company said the price increase to "sustainable" levels is necessary to support ongoing investment in production capabilities and ensure reliable long-term supply for customers.
Price: $7.32, Change: $+1.12, Percent Change: +18.06%