Vertiv Holdings shares rose 5.1% to $254.12 by 9:43 a.m. EDT after S&P Dow Jones Indices said the company would join the S&P 500 on March 23. The move follows strong quarterly results and recent debt upgrades. Lumentum, Coherent, and EchoStar will also join, while Match Group, Molina Healthcare, Lamb Weston, and Paycom Software will exit the index.