Movers Roundup: Headwaters, Keryx Biopharma

Among the stock activity stories for Monday, June 8, from AP Financial News:

WASHINGTON (AP) — Shares of Headwaters Inc. fell after the energy and construction materials supplier proposed amendments to its senior credit agreement.

NEW YORK (AP) — Shares of Keryx Biopharmaceuticals Inc. jumped after the company reported positive midstage safety results for its kidney disease drug.

NEW YORK (AP) — Shares of PDL BioPharma Inc. jumped after the company said it expects a revenue boost in the second quarter from royalties on a mix of drugs, including the blockbuster cancer treatment Avastin and respiratory virus drug Synagis.

NEW YORK (AP) — Sliding costs of a key commodity and "healthy" sales growth this season will boost earnings of Scotts Miracle-Gro Co., an analyst said, upgrading the stock.