Tesla (TSLA) shares are in focus on Monday at midday after the automaker said it delivered 11,580 Model S sedans during the third quarter. Sales were 49 percent higher than the same period a year earlier. Stocks began the week sharply higher and held those gains through to the middle of the session. GE (GE) was the best performer on the Dow, while a jump in crude oil prices pushed the energy sector to lead the S&P 500 hihger. Services growth slowed in September to its lowest level in three months. The report showed that the domestic economy is experiencing challenges outside of lower energy prices and the strength of the U.S. dollar. Exelon (EXC) jumped on reports it has reached a tentative deal with the Washington mayor to allow it to buy rival utility company Pepco (POM). TheStreet's Keris Lahiff has details from Wall Street.