NEW YORK ( TheStreet) -- North American Palladium (AMEX: PAL) is trading at unusually high volume Thursday with 5.4 million shares changing hands. It is currently at 4.1 times its average daily volume and trading down 28 cents (-10.7%) at $2.34 as of 3:55 p.m. ET. North American Palladium has a market cap of $438.1 million and is part of the basic materials sector and metals & mining industry. Shares are up 2.7% year to date as of the close of trading on Wednesday. North American Palladium Ltd. engages in the exploration and production of palladium and gold properties primarily in Canada. It explores primarily for palladium, gold, platinum, nickel, and copper metals. TheStreet Ratings rates North American Palladium as a sell. The company's weaknesses can be seen in multiple areas, such as its unimpressive growth in net income, poor profit margins and generally disappointing historical performance in the stock itself. You can view the full North American Palladium Ratings Report. See all heavy volume stocks in our stocks moving on unusual volume list or get investment ideas from our investment research center. Interested in other stocks that are falling on unusually high volume? Get free SMS text alerts sent to you when the action happens by texting HVDOWN to 95370 or select from multiple alert options.