NEW YORK ( TheStreet) -- 99 Cents Only Stores (NYSE: NDN) is trading at unusually high volume Tuesday with 7.3 million shares changing hands. It is currently at 9.3 times its average daily volume and trading up 89 cents (+4.3%) at $21.38 as of 9:30 a.m. ET. Ninety-nine Cents Only Stores has a market cap of $1.4 billion and is part of the services sector and retail industry. Ninety-nine Only Stores engages in the retail sale of consumable general merchandise with focus on name-brand products. Its stores offer a range of consumer goods, and closeout merchandise. TheStreet Ratings rates 99 Cents Only Stores as a buy. The company's strengths can be seen in multiple areas, such as its revenue growth, largely solid financial position with reasonable debt levels by most measures, growth in earnings per share, increase in net income and solid stock price performance. We feel these strengths outweigh the fact that the company has had somewhat disappointing return on equity. You can view the full 99 Cents Only Stores 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 rising on unusually high volume? Get free SMS text alerts sent to you when the action happens by texting HVUP to 95370 or select from multiple alert options.