Twitter jumped roughly 5 percent Tuesday, hitting a 3-year high, after Dow Jones Indices announced the social media company would replace Monsanto in the S&P 500.
The gains pushed Twitter stock above $39 a share. Its opening price of $39.53 puts the stock at levels not seen since April 2015.
Another tech company, Netflix will fill the agricultural giant's place on the S&P 100. The changes will go into effect prior to market open on Thursday, June 7.
German pharmaceutical and life sciences company Bayer is wrapping up its $63 billion takeover of Monsanto. As part of the acquisition, Bayer will retire Monsanto's iconic name.
Shares of Twitter are up nearly 65 percent year-to-date and more than 110 percent year-over-year.
—CNBC's Sara Salinas contributed to this report.
