Nov 16 (Reuters) - Wall Street indexes opened slightly lower on Tuesday, with Nvidia weighing on the S&P 500 and Nasdaq after the UK ordered an in-depth probe into the chipmaker’s planned acquisition of Arm. The Dow Jones Industrial Average fell 11.27 points, or 0.03%, at the open to 36,076.18. The S&P 500 opened lower by 3.38 points, or 0.07%, at 4,679.42. The Nasdaq Composite dropped 13.52 points, or 0.09%, to 15,840.32 at the opening bell. (Reporting by Ambar Warrick; Editing by Maju Samuel)