Stocks ended a shaky day of trading on Wall Street roughly where they began following a couple sudden reversals. The S&P 500 finished Thursday nearly flat and edged down by less than 0.1% following several turns between losses and gains. The Dow Jones Industrial Average dropped 0.3%, and the Nasdaq composite added less than 0.1%. Stocks have slowed their rally since the S&P 500 climbed to the brink of its all-time high earlier this week as pressure from the bond market has cranked higher. Treasury yields swiveled in the bond market with oil prices before ultimately rising by the end of the day.