Chipmaker Marvell Technology's shares gained after news it will join the benchmark U.S. stock index, a move that often drives buying from index-tracking funds.
Marvell Technology shares climbed 8.8% after the company was added to the S&P 500, a widely followed U.S. stock index. Inclusion in the benchmark typically matters because index funds and other passive investors that track the S&P 500 often need to buy newly added constituents, which can lift demand for the stock.