NEW YORK ( TheStreet) -- Shares of StemCells (Nasdaq: STEM) were gapping down Friday morning with an open price 11.5% lower than Thursday's closing price. The stock closed at 87 cents Thursday and opened today's trading at 77 cents. The average volume for StemCells has been 705,000 shares per day over the past 30 days. StemCells has a market cap of $122.3 million and is part of the health care sector and drugs industry. Shares are down 19.4% year to date as of the close of trading on Thursday. StemCells, Inc., a biopharmaceutical company, engages in the research, development, and commercialization of stem cell therapeutics and related technologies. It develops cell-based therapeutics for the central nervous system and liver. TheStreet Ratings rates StemCells as sell. The company's weaknesses can be seen in multiple areas, such as its unimpressive growth in net income, disappointing return on equity, generally disappointing historical performance in the stock itself and feeble growth in its earnings per share. You can view the full StemCells Ratings Report. Get more investment ideas from our investment research center. Interested in other stocks that are gapping down? Get free SMS text alerts sent to you when the action happens by texting DOWN to 95370 or select from multiple alert options.