Looking to boost your portfolioâ€™s income, while decreasing its systemic risk? Then this may be an interesting point for your own analysis.

To construct this list we looked for stocks with the following characteristics:

- Beta between 0.5 and 1
- Dividend yield above 3%
- Significantly undervalued by the Graham Number

* Interactive Chart: Press Play to compare changes in analyst ratings over the last two years for the top six stocks mentioned below. Analyst ratings sourced from Zacks Investment Research. *

The Graham Number is considered to be the maximum price an investor should pay for a stock, according to the formula developed by Benjamin Graham. â€¨

It is calculated as follows:

- Graham Number = Square Root of (22.5) x (Earnings per Share) x (Book Value per Share).â€¨

This equation is predicated on Grahamâ€™s belief that the price-to-earnings (P/EPS) ratio should be no more than 15, and the price-to-book value (P/BVPS) ratio should be no more than 1.5.â€¨â€¨

Therefore we only included companies that meet both of these criteria. As a result, the product of the two should not be more than 22.5. In other words, (P/EPS of 15) x (P/BVPS of 1.5) = 22.5. After taking the square root of both sides, the equation emerges...

We also created a price-weighted index of the stocks mentioned below, and monitored the performance of the list relative to the S&P 500 index over the last month. To access a complete analysis of this list's recent performance, click here.

Which of these stocks do you find attractive to buy?

* 1. France Telecom (FTE):* Telecom Services Industry. Market cap of $59.79B. Beta at 0.79. Dividend yield at 8.57%. BVPS at 15.73, diluted EPS at 2.61. Graham number = sqrt(22.5 x 15.73 x 2.61) = $30.39. Given the current price at $22.85, this implies an upside of 33.01%. The stock has gained 30.24% over the last year.

*Electric Utilities Industry. Market cap of $12.81B. Beta at 0.71. Dividend yield at 3.26%. BVPS at 32.77, diluted EPS at 3.71. Graham number = sqrt(22.5 x 32.77 x 3.71) = $52.3. Given the current price at $39.37, this implies an upside of 32.85%. The stock has gained 25.94% over the last year.*

**2. Edison International (NYSE:EIX):***Electric Utilities Industry. Market cap of $12.06B. Beta at 0.64. Dividend yield at 4.9%. BVPS at 47.88, diluted EPS at 6.95. Graham number = sqrt(22.5 x 47.88 x 6.95) = $86.53. Given the current price at $67.86, this implies an upside of 27.51%. The stock has lost 5.57% over the last year.*

**3. Entergy Corporation (NYSE:ETR):***Electric Utilities Industry. Market cap of $1.94B. Beta at 0.68. Dividend yield at 4.12%. BVPS at 21.8, diluted EPS at 2.22. Graham number = sqrt(22.5 x 21.8 x 2.22) = $33.0. Given the current price at $25.89, this implies an upside of 27.46%. The stock has gained 42.89% over the last year.*

**4. Portland General Electric Company (NYSE:POR):***Regional Banks Industry. Market cap of $329.95M. Beta at 0.63. Dividend yield at 3.39%. BVPS at 13.54, diluted EPS at 2.14. Graham number = sqrt(22.5 x 13.54 x 2.14) = $25.53. Given the current price at $20.1, this implies an upside of 27.03%. The stock is a short squeeze candidate, with a short float at 6.95% (equivalent to 28.55 days of average volume). The stock has gained 3.4% over the last year.*

**5. Southside Bancshares Inc. (NASDAQ:SBSI):***Regional Banks Industry. Market cap of $416.38M. Beta at 0.59. Dividend yield at 4.52%. BVPS at 22.53, diluted EPS at 2.32. Graham number = sqrt(22.5 x 22.53 x 2.32) = $34.29. Given the current price at $27.16, this implies an upside of 26.27%. The stock has gained 5.34% over the last year.*

**6. Community Trust Bancorp Inc. (NASDAQ:CTBI):***Shipping Industry. Market cap of $488.36M. Beta at 0.96. Dividend yield at 10.01%. BVPS at 15.24, diluted EPS at 1.76. Graham number = sqrt(22.5 x 15.24 x 1.76) = $24.57. Given the current price at $20.89, this implies an upside of 17.6%. The stock is a short squeeze candidate, with a short float at 12.22% (equivalent to 13.54 days of average volume). It's been a rough couple of days for the stock, losing 12.48% over the last week.*

**7. Knightsbridge Tankers Limited (VLCCF):***Savings & Loans Industry. Market cap of $7.06B. Beta at 0.75. Dividend yield at 6.19%. BVPS at 12.67, diluted EPS at 1.23. Graham number = sqrt(22.5 x 12.67 x 1.23) = $18.73. Given the current price at $16.15, this implies an upside of 15.95%. The stock is a short squeeze candidate, with a short float at 5.53% (equivalent to 7.49 days of average volume). The stock has gained 6.53% over the last year.*

**8. New York Community Bancorp Inc. (NYB):***Regional Banks Industry. Market cap of $1.04B. Beta at 0.95. Dividend yield at 5.02%. BVPS at 18.32, diluted EPS at 1.66. Graham number = sqrt(22.5 x 18.32 x 1.66) = $26.16. Given the current price at $24.11, this implies an upside of 8.5%. The stock is a short squeeze candidate, with a short float at 13.59% (equivalent to 41.16 days of average volume). The stock has lost 7.08% over the last year.*

**9. United Bankshares Inc. (NASDAQ:UBSI):***Regional Banks Industry. Market cap of $371.64M. Beta at 0.81. Dividend yield at 3.85%. BVPS at 16.87, diluted EPS at 1.59. Graham number = sqrt(22.5 x 16.87 x 1.59) = $24.57. Given the current price at $23.0, this implies an upside of 6.81%. The stock has gained 30.61% over the last year.*

**10. Washington Trust Bancorp Inc. (NASDAQ:WASH):***Data sourced from Yahoo! Finance and Finviz.

**Disclosure:**I have no positions in any stocks mentioned, and no plans to initiate any positions within the next 72 hours.