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

Here is what you need to know.
The Fed says the unwinding of its balance sheet will begin "relatively soon." The Federal Reserve's balance sheet swelled to $4.5 trillion as it navigated the financial crisis, and now it's almost time to begin shrinking it.
The UK is ditching Libor. The London Interbank Offered Rate will be dropped for a more reliable marker by 2021, according to City A.M.
The dollar hits its lowest level since May 2016. The US dollar index hit a low of 93.15 on Thursday, making f