What are the four new companies being added to the S&P 500 index in March?

The index provider reviews the S&P 500 every quarter using rigorous criteria on market capitalisation, profitability, liquidity and sector balance to ensure it reflects the largest and most representative top 500 US companies.

The latest update will bring Vertiv Holdings, Lumentum Holdings, Coherent Corp. and EchoStar Corporation into the index.