Business News Diamond Offshore Drilling, Inc. (DO) Downgraded by Zacks Investment Research to “Hold” October 21, 2017 johorbiznet Johor News Diamond Offshore Drilling, Inc. (DO) Downgraded by Zacks Investment Research to “Hold” StockNewsTimes Diamond Offshore Drilling, Inc. (NYSE:DO) Rating Increased to Neutral at FBR & Co Dispatch Tribunal Diamond Offshore Drilling, Inc. (NYSE:DO) Now Covered by Deutsche Bank AG The Ledger Gazette Diamond Offshore Drilling, Inc. (DO) Zacks.com Full coverage Source: Business News Feed