If Apple breaks $419, the market will go with it

... at this point, AAPL becomes a leading tell for the entire stock market. It is important to understand that mutual funds, ETFs that and index futures managers that need to liquidate positions will first liquidate the largest and most liquid holdings ...

http://money.msn.com/top-stocks/post.aspx?post=1684814c-dd0e-4ce0-96a7-4053df3a5cbc