Last week was volatile thanks to China raising their interest rates a quarter basis point. This rate hike caused the Dollar to spike in value which in turn forced equities and metals to sell off sharply. This one day event caused equities to break below a short term support level causing a large number of protective stops to be triggered. This added more selling pressure causing the market to be down nearly 2.5% at one point but a late day bounce recouped a good chunk of the drop.