NEW YORK, Sept 17 (Reuters) - Wall Street opened flat on Thursday after FedEx Corp reported in-line quarterly profits and even as the latest labor and housing data indicated an economic recovery was gaining steam.
The Dow Jones industrial average was up 8.46 points, or 0.09 percent, at 9,800.17. The Standard & Poor's 500 Index rose 0.25 points, or 0.02 percent, at 1,069.01. The Nasdaq Composite Index was down 1.34 points, or 0.06 percent, at 2,131.81.
Friday will mark the quarterly expiration and settlement of four different types of September equity futures and options contracts -- a convergence known as quadruple witching. The events can lead to greater volume and volatility as players adjust and exercise derivative positions.