The U.S. stock market fell from its records after oil prices yo-yoed. The price for a barrel of Brent crude oil settled at roughly $100 Thursday and continued its decline from more than $115 early this week. But it swung sharply before getting there, as Wall Street waits to see whether its hopes for a deal to end the Iran war are warranted or just wishful. As oil prices pared their drops in the afternoon, stocks fell. The S&P 500 slipped 0.4% from its all-time high. The Dow Jones Industrial Average dropped 0.6%, and the Nasdaq fell 0.1%.