That's expected when the market on the whole goes down. Nows the time to look for the healthy stocks who went red along with their sectors,they don't belong down there.
Expect market to dip 10% from high,then she moves back up at a steady but at slower healthier rate.
Remember,rates have increased,this was expected by Yellen previous forecast. This causes markets to dip,but THIS market is healthy.
Problem is/was,Yellen never raised rates during Obamas term,she lowered them or kept the same. This was all political to make him look good. Many experts said she should've raised them slow and steady and spread out over time so as not too shock the market and ease the pain,but she did't, because the economic fundys were unhealthy and if she raise rates during his term the market would've took a HUGE HIT.
So before she left ,she made sure to constantly report rates will be increased each quarter most likey. Only because this market/economy is heathy. She would've never dared to raise during last presidency because economy was not good.
Don't forget ,she had that secret meeting with Obama and when both were asked about it,they declined to divulge.She protected him by not raising rates,which kept his market from crashing.
You can't raise rates in an unhealthy market !