Short Sellers High on Solar Stocks, Mixed on Alt Energy

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Short interest moves among solar and alternative energy stocks were mixed during the two-week reporting period that ended on June 15.  Of the companies we watch, short interest rose on two of three solar stocks and on three of four alternative energy stocks.

First Solar Inc. (NASDAQ: FSLR) saw short interest soar by 75% to 7.26 million shares. Days to cover fell from four to one. In the two-week short interest period, the stock’s share price fell by 25.6%. Its 52-week trading range is $38.36 to $81.72, and it closed at $51.91 on Tuesday, down about 1.4% for the day.

SunPower Corp. (NASDAQ: SPWR) short interest increased by 8.1% to 18.38 million shares. In the two weeks to June 15, the share price dropped by 9.3%. The 52-week range is $6.46 to $11.70, and it closed at $7.78 on Tuesday, down about 0.1% for the day. Days to cover fell from nine to six.

Canadian Solar Inc. (NASDAQ: CSIQ) saw a skyrocketing increase of 133.6% in short interest during the two-week period. Some 2.92 million shares were short and days to cover fell from two to one. The company’s share price dipped by 30% over the two weeks, and shares closed Tuesday at $12.15, down about 2% for the day, in a 52-week range of $11.37 to $19.09.

FuelCell Energy Inc. (NASDAQ: FCEL) posted a decrease of 4% in short interest during the period. Some 7.42 million shares were short as of June 15. The stock closed at $1.37 on Tuesday, down about 1.4% for the day, in a 52-week range of $1.18 to $2.49. Shares traded down more than 10% in the short interest period, and days to cover dropped from 17 to six.

Plug Power Inc. (NASDAQ: PLUG) saw short interest rise by 3.1% to 37.61 million shares. Days to cover rose from eight to 12. In the two weeks to June 15, the share price rose by nearly 3%. The stock’s 52-week range is $1.53 to $3.21, and shares closed most recently at $2.03, up about 4.6% for the day.

Clean Energy Fuels Corp. (NASDAQ: CLNE) saw a drop of more than 10% in short interest to 3.5 million shares. Days to cover rose from one to two. The share price dropped 8.7% in the period. The stock closed at $3.97 on Tuesday, up more than 11% for the day, in a 52-week range of $1.31 to $4.00. The high was posted Tuesday.

Pacific Ethanol Inc. (NASDAQ: PEIX) saw short interest fall by 12.2% in the two-week period to 2.16 million shares. Days to cover fell from six to four. The stock price fell 10.5% in the two weeks. Shares closed at $2.70 on Tuesday, up nearly 2% on the day, in a 52-week range of $2.40 to $7.50.