Tenneco Inc (NYSE:TEN) makes automotive clean air/ride performance products for original equipment manufacturers and aftermarkets. The stock has been in a steady downtrend since February 2017. At this time, the stock peaked out at $70.96 a share. Today, TEN stock is trading at $22.61 a share. Traders and investors should note that TEN stock is trading below the 200-month moving average. This tells us that the stock is in a very weak technical position on the charts. The next major support level for TEN stock will be around the $20.00 level. This is where the stock broke out in 2010. Often, declining stocks such as this will find excellent chart support around prior break-out levels.