NEW YORK ( TheStreet) -- Royale Energy (Nasdaq: ROYL) is trading at unusually high volume Monday with 2.4 million shares changing hands. It is currently at 4.2 times its average daily volume and trading up 14 cents (+2.8%) at $5.16 as of 10:31 a.m. ET. Royale Energy has a market cap of $51.6 million and is part of the basic materials sector and energy industry. Shares are up 124.1% year to date as of the close of trading on Friday. Royale Energy, Inc. operates as an independent oil and natural gas producer in the United States. The company has a P/E ratio of 63, below the average energy industry P/E ratio of 72 and above the S&P 500 P/E ratio of 22.6. TheStreet Ratings rates Royale Energy as a hold. The company's strengths can be seen in multiple areas, such as its revenue growth, compelling growth in net income and expanding profit margins. However, as a counter to these strengths, we also find weaknesses including premium valuation and weak operating cash flow. You can view the full Royale Energy Ratings Report. See all heavy volume stocks in our stocks moving on unusual volume list or get investment ideas from our investment research center.