First published in the Quoted Cleantech newsletter, July 2011. Copyright Cleantech Investor 2011
by Andrew Hore
At the beginning of May Sigma Capital decided to stop compiling its AIM Cleantech Index because the number of companies had dwindled and many of the original constituents were no longer quoted. Although there has been a dearth of new cleantech companies coming to AIM in recent years, there are signs that activity levels are picking up with more cleantech businesses either joining AIM or announcing their intention to float.




