Stocks rise on Fed cheer; Dow, S&P 500 break records By: CNBC.com News September 18, 2014 at 11:45 AM EDT U.S. stocks rose Thursday, extending the S&P 500's climb into a third day, as investors relished the Federal Reserve's renewed vow to keep rates low. Read More >> Related Stocks: ConAgra Foods DuPont USA Goldman Sachs Group Pier 1 Imports Rite Aid Corp Sentinelone Inc Cl A Steel Dynamics Inc United Nat Foods