10 things you need to know before the opening bell (SPY, SPX, QQQ, DIA, AAPL)

Here is what you need to know.
The S&P 500 looks to close out 2017 with a bang. The benchmark index is on track to open up 0.27% near 2,695. It's gained about 20% this year.
Short volatility was the stock market's "trade of the year." Two exchange-traded products used to short volatility have surged almost 200% in 2017, dwarfing returns for even the best-performing stocks in major indexes.
Traders are betting billions the hottest stocks of 2017 will get crushed next year. Facebook, Apple, Ne