A $40-50 million block of Owens Corning's bank debt traded at 64-66 last Wednesday, which is up from the low 60s for the credit. Deutsche Banc Alex. Brown was rumored to be involved, although that could not be confirmed with officials. Owens Corning, based in Toledo, Ohio, manufactures fiberglass for vinyl siding and asphalt. "Operationally, the company is doing well. The reason we filed for bankruptcy is the asbestos situation," a company spokesman said. He declined to comment on trading levels. Deutsche Banc officials declined to comment.