You don't have to be an expert technical analyst to see what's been going on in shares of Silvercorp Metals ( SVM), a small-cap silver mining stock. Shares of the miner have been trending lower in a channel pattern since all the way back in September, bouncing ever-lower in a high-probability range. Trend channels are useful for traders because they identify the high-probability range for shares to keep moving within. The trendline resistance level in SVM has acted as a ceiling for shares the last six times it's been tested, and that pattern doesn't look likely to change now. >>8 Stocks Surging on Big Volume If you're looking for an opportunity to sell, now looks pretty good with shares just coming off of a bounce off of trendline resistance; now, they've got the furthest to move down the channel before catching a bid again. If you decide to go short here, I'd recommend keeping a protective stop just above the 50-day moving average.