No, Alibaba IPO doesn't signal a market top: Pros By: CNBC.com News September 23, 2014 at 13:14 PM EDT Talk that Alibaba's high-flying IPO signals a top for the stock market is wrong, pros on CNBC's "Halftime Report" say. Read More >> Related Stocks: Alibaba Group Holding Ltd Apple Facebook Gopro Inc Cl A Virtus Investment Partners Yahoo