NEW YORK ( TheStreet) -- F5 Networks (Nasdaq: FFIV) 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 up $7.74 (+6.2%) at $131.95 as of 3:10 p.m. ET. F5 has a market cap of $10.52 billion and is part of the technology sector and computer software & services industry. Shares are up 17% year to date as of the close of trading on Wednesday. F5 Networks, Inc. provides application delivery networking technology that optimizes the delivery of network-based applications, and the security, performance, and availability of servers, data storage devices, and other network resources in the Americas, EMEA, Japan, and the Asia Pacific. The company has a P/E ratio of 39.8, below the average computer software & services industry P/E ratio of 42.7 and above the S&P 500 P/E ratio of 17.7. TheStreet Ratings rates F5 as a buy. The company's strengths can be seen in multiple areas, such as its robust revenue growth, largely solid financial position with reasonable debt levels by most measures, notable return on equity, impressive record of earnings per share growth and compelling growth in net income. We feel these strengths outweigh the fact that the company is trading at a premium valuation based on our review of its current price compared to such things as earnings and book value. You can view the full F5 Ratings Report. See all heavy volume stocks in our stocks moving on unusual volume list or get investment ideas from our investment research center.