NEW YORK ( TheStreet) -- American International Group (NYSE: AIG) is trading at unusually high volume Tuesday with 21.5 million shares changing hands. It is currently at four times its average daily volume and trading up $1.08 (+3.7%) at $30.14 as of 2:20 p.m. ET. American International Group has a market cap of $48.09 billion and is part of the financial sector and insurance industry. Shares are up 25.3% year to date as of the close of trading on Monday. American International Group, Inc. engages in the provision of insurance products and services for the commercial, institutional, and individual customers in the United States and internationally. The company operates in three segments: Chartis, SunAmerica Financial Group, and Aircraft Leasing. The company has a P/E ratio of 3.3, above the average insurance industry P/E ratio of 1.7 and below the S&P 500 P/E ratio of 17.7. TheStreet Ratings rates American International Group as a hold. The company's strengths can be seen in multiple areas, such as its compelling growth in net income, attractive valuation levels and notable return on equity. However, as a counter to these strengths, we also find weaknesses including feeble growth in the company's earnings per share, weak operating cash flow and a generally disappointing performance in the stock itself. You can view the full American International Group 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.