Market wrap: Large caps lead stock slump. The VN-Index dropped seven tenths of a percent on Friday. The index fell each day this week for a 4.2% loss and has tumbled nine of the last ten days. VHM (-4.5%) was the top contributor to the pullback, followed by VNM (-2.9%, down 9.2% for the week), GAS (-1.9%), MSN (-3.0%) and VRE (-2.7%).