10 things you need to know before the opening bell (FB, AAPL, PZZA)

Here is what you need to know.
Markets just got another ominous warning sign about the health of China's economy. Chinese manufacturing PMI fell to 50.2 in October — just above contractionary territory and to its lowest level since July 2016, according to data released Wednesday.
Bitcoin turns 10. On October 31, 2008, bitcoin's mysterious founder, Satoshi Nakamoto, published a nine-page-long academic-style paper called "Bitcoin: A Peer-to-Peer Electronic Cash System," paving the way for th