NEW YORK ( TheStreet) -- Suntech Power ( STP), Perfect World ( PWRD), Mentor Graphics ( MENT) and LDK Solar ( LDK) are among the 10 stocks reporting quarterly earnings next week.

According to analysts' estimates, the following stocks have upside potential ranging from 11% to 89%, with negligible sell ratings.
10. Toll Brothers ( TOL) designs, builds, markets and arranges financing for single-family detached and attached homes in luxury residential communities. It is also involved, directly and through joint ventures, in projects where it is building, or converting rental apartment buildings into, high-, mid- and low-rise luxury homes.

The company will report its second quarter 2011 earnings on May 25.

Net loss for the quarter is forecast at $5.9 million on sales of $323.4 million, compared to a loss of $40.4 million on $311.3 million sales recorded during 2010 second quarter, according to analysts polled by Bloomberg.

Loss per share is pegged at 4 cents, down from 24 per share reported during the comparable quarter last year.

Of the 19 analysts covering the stock, 26% recommend a buy, while 63% rate a hold. Analysts polled by Bloomberg expect the stock to gain an average 11% to $22.89 in value from current levels. Recently, analysts at Zacks Investment Research reiterated a neutral rating on the stock.

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