NEW YORK ( TheStreet) -- Seaspan Corporation (NYSE: SSW) is trading at unusually high volume Monday with 1.3 million shares changing hands. It is currently at 4.1 times its average daily volume and trading up 95 cents (+4.8%) at $20.80 as of 4:01 p.m. ET. Seaspan has a market cap of $1.3 billion and is part of the services sector and transportation industry. Shares are up 59.8% year to date as of the close of trading on Friday. Seaspan Corporation owns and operates the containerships that are engaged in the deep-sea container transportation business in Hong Kong. The company charters its containerships pursuant to long-term, fixed-rate time charters to various container liner companies. TheStreet Ratings rates Seaspan as a hold. The company's strengths can be seen in multiple areas, such as its robust revenue growth, good cash flow from operations and solid stock price performance. However, as a counter to these strengths, we also find weaknesses including generally poor debt management and disappointing return on equity. You can view the full Seaspan 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.