A measure of U.S. company credit risk hovered above a six-year low after a Labor Department report showed more Americans than forecast filed applications for unemployment benefits last week. Bristol-Myers Squibb Co. issued $1.5 billion in bonds. The Markit CDX North American Investment Grade Index, a credit-default swaps benchmark that investors use to hedge against losses or to speculate on creditworthiness, increased 0.3 basis point to 72.3 basis points at 5:12 p.m. in New York, according to prices compiled by Bloomberg. The benchmark closed Oct. 22 at the lowest level since November 2007 in data that adjust for the effects of the market's shift to a new version in September.