iShares Global Clean Energy ETF (NASDAQ:ICLN) saw a significant growth in short interest during the month of December. As of December 15th, there was short interest totalling 9,960,000 shares, a growth of 66.3% from the November 30th total of 5,990,000 shares. Based on an average daily trading volume, of 5,371,100 shares, the days-to-cover ratio is presently 1.9 days. A number of hedge funds and other institutional investors have recently bought and sold shares of ICLN. SPX Equities Gestao de Recursos Ltda acquired a new position in iShares Global Clean Energy ETF in the third quarter valued at about $23,490,000. Qube Research & Technologies Ltd lifted its position in iShares Global Clean Energy ETF by 282.6% in the second quarter. Qube Research & Technologies Ltd now owns 1,136,912 shares of the company’s stock valued at $26,672,000 after buying an additional 839,721 shares during…