Stocks finished mixed Friday as volume swelled due to a combination of the simultaneous expiration of options and futures and the much anticipated IPO of Alibaba (BABA). The Nasdaq fell 0.3%, the S&P 500 dropped 0.1%, and the Dow Jones industrial average rose 0.1%. For the week, the Nasdaq finished up 0.4%, the S&P 500 rose 1.4%, and the Dow was up 1.9%. The S&P 500 and the Dow touched all-time highs during the day.