NEW YORK ( TheStreet) -- Tekelec (Nasdaq: TKLC) is trading at unusually high volume Monday with 11.1 million shares changing hands. It is currently at 10.6 times its average daily volume and trading up $1.13 (+11.4%) at $11.03 as of 9:31 a.m. ET. Tekelec has a market cap of $676.9 million and is part of the technology sector and telecommunications industry. Shares are down 16.9% year to date as of the close of trading on Friday. Tekelec engages in the design, development, manufacture, marketing, sale, and support of telecommunications products and services. TheStreet Ratings rates Tekelec as a hold. The company's strengths can be seen in multiple areas, such as its largely solid financial position with reasonable debt levels by most measures, good cash flow from operations and expanding profit margins. However, as a counter to these strengths, we also find weaknesses including deteriorating net income, disappointing return on equity and a generally disappointing performance in the stock itself. You can view the full Tekelec 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.