Key TakeawaysThe S&P 500 added 0.8% on Monday, June 17, 2024, posting an all-time closing high to kick off a new week of trading.Shares of Autodesk led the S&P higher after an activist investor announced a stake in the design software company, saying it would push for board and operational changes.First Solar shares moved lower, extending losses posted by the stock at the end of last week as the updated rate outlook weighed on the solar sector. Major U.S. equities indexes jumped higher to kick off the new t ...