Oracle's five-year CDS surged 36 basis points in two days to 288 basis points, according to Deutsche Bank warnings cited by Wallstreetcn.com. If its BBB rating is downgraded, it would force institutional investors who can only hold investment-grade assets to sell, triggering a systemic chain reaction. Oracle is currently at the lowest tier of investment grade, and its CDS spread is 185-220 basis points wider than its own unsecured bonds.