tracking the largest us stocks, are we swinging lower?

tracking an index of apple, facebook, tesla, amazon, and google combined. Apples weakness today may confirm more weakness to come in the biggest tech/internet names. If we do see weakness, the 50 day moving average is a logical place to watch for support. In my opinion, it may not hold, but thats not up to me, its up to the crows of investors voting with their purchases and sales, aka the market.