Closing Bell: Co-Founder Biz Stone Returns to Twitter; Nasdaq at Fresh Records

The S&P 500 retreated from records as crude oil pulled back from recent two-week highs. Disappointing earnings from TJX (TJX) - Get Report and Dick's (DKS) - Get Report also dragged on Wall Street. Yahoo! (YHOO) rose after announcing plans to buy back as much as $3 million worth of shares. The offer provides liquidity to stockholders forced to sell shares heading into the close of its sale to Verizon (VZ) - Get Report . Twitter (TWTR) - Get Report rose on news co-founder Biz Stone will return to the company. In a blog post confirming the news, Stone said his role would involve guiding the company culture and energy. Stone left the company six years ago. Canaccord Genuity upped its stock price target for Apple (AAPL) - Get Report on high hopes for iPhone sales. Analyst Michael Walkley raised his estimate for fiscal 2018 iPhone sales by six million to 248 million units.