NEW YORK ( TheStreet) -- Shares of SL Industries (AMEX: SLI) have taken a tremendous swing upward. The stock is trading at $26.13 as of 9:30 a.m. ET, 21% above Friday's closing price of $21.60. Volume is at 10,200, 2.5 times the daily average of 4,000.

SL has a market cap of $86.6 million and is part of the technology sector and electronics industry. Shares are up 23.5% year to date as of the close of trading on Friday.

SL Industries, Inc., through its subsidiaries, designs, manufactures, and markets power electronics, motion control, power protection, power quality electromagnetic, and specialized communication equipment in the United States and internationally. The company has a P/E ratio of 10.9, below the average electronics industry P/E ratio of 19.1 and below the S&P 500 P/E ratio of 16.3.

TheStreet Ratings rates SL 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, solid stock price performance, attractive valuation levels and good cash flow from operations. We feel these strengths outweigh the fact that the company shows low profit margins. You can view the full SL Ratings Report.

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