Jonathan Garber / Business Insider: Finance
10 things you need to know before the opening bell (SPY, SPX, QQQ, DIA, AAPL, TSLA, GE) – Here is what you need to know. 1. Apple warns China is slowing down. CEO Tim Cook sent a letter to investors on Wednesday that cut Apples first-quarter guidance, citing a slowdown in Chinas economy. 2. Major Apple suppliers are getting pounded. The facial-recognition-sensor maker AMS plunged as much as …