TSC Ratings provides exclusive stock, ETF and mutual fund ratings and commentary based on award-winning, proprietary tools. Its "safety first" approach to investing aims to reduce risk while seeking solid outperformance on a total return basis.

The following ratings changes were generated on Monday, May 11.

We've upgraded

Emerson Electric

(EMR) - Get Report

from hold to buy, driven by its notable return on equity, reasonable valuation levels, expanding profit margins and largely solid financial position with reasonable debt levels by most measures. We feel these strengths outweigh the fact that the company shows weak operating cash flow.

Return on equity improved compared with the same quarter a year ago. Emerson's gross profit margin of 39.2% has decreased from the year-ago period. Its 7.3% net profit margin trails the industry average. Revenue fell by 15.5% since the year-ago quarter, and EPS decreased. The 0.7 debt-to-equity ratio is high compared with the industry average. The company has a quick ratio of 0.9.

We've upgraded

Hansen Natural

(HANS)

from hold to buy, driven by its revenue growth, largely solid financial position with reasonable debt levels by most measures, increase in net income, expanding profit margins and solid stock price performance. We feel these strengths outweigh the fact that the company is trading at a premium valuation based on our review of its current price compared to such things as earnings and book value.

Revenue rose by 15.1% since the year-ago quarter, and EPS increased. The company maintains a quick ratio of 3.7. Net income increased 44.3% compared with the year-ago quarter, from $28.8 million to $41.6 million. The 53.3% gross profit margin has increased from the same quarter last year. The 17% net profit margin trails the industry average.

Shares are up 41.2% over the past year, outperforming the

S&P 500

. We feel that the stock's sharp appreciation over the last year has driven it to a price level which is now somewhat expensive compared to the rest of its industry. The other strengths this company shows, however, justify the higher price levels.

We've upgraded

Unum Group

(UNM) - Get Report

from hold to buy, driven by its increase in net income, attractive valuation levels, good cash flow from operations, growth in earnings per share and largely solid financial position with reasonable debt levels by most measures. We feel these strengths outweigh the fact that the company shows low profit margins.

Net income increased by 1.1% compared with the year-ago quarter, from $163.1 million to $164.9 million. Net operating cash flow increased to $290.9 million, or 6% compared with the same quarter last year. EPS are up 8.7%, and we feel the company is poised for EPS growth in the coming year. Revenue dropped by 3.6% since the year-ago quarter.

We've upgraded

Walgreen

(WAG)

from hold to buy, driven by its revenue growth, good cash flow from operations, largely solid financial position with reasonable debt levels by most measures and notable return on equity. We feel these strengths outweigh the fact that the company shows low profit margins.

Revenue rose by 7% since the year-ago quarter, though EPS declined. Net operating cash flow increased 28% to $1.4 billion. Walgreen's debt-to-equity ratio is 0.2, which is below the industry average., It's quick ratio is 0.6. ROE has decreased from the year-ago quarter. Net income fell 6.7%, from $685.9 million to $640 million.

Other ratings changes include

Deere

(DE) - Get Report

, upgraded from hold to buy.

All ratings changes for May 11 are listed below.

Note: Our quantitative model makes stock recommendations based on GAAP figures that may differ materially from data as reported by the companies themselves. As a result, rating changes are occasionally driven by so-called nonrecurring items. As always, we urge readers to use TSC Ratings' reports in conjunction with additional information to construct their opinions on the value that should be placed on any given stock.

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