Market Vectors Vietnam ETF ( VNM) -2.3% The Vietnam ETF is stumbling to its third consecutive day of losses even as other corners of Asia push higher. Though discouraging, this type of performance is not surprising; it is common to see VNM move independent of other global markets. In the event that VNM can stabilize, investors should keep an eye on the fund's 200-day moving average. This most recent decline began just as this level was tested. The fund has traded below this level for a year. All prices as of 2:11 PM EST. Written by Don Dion in Williamstown, Mass.