Biofuel Startups Prepare IPOs; Investors Shrug

Biofuel Startups Prepare IPOs; Investors Shrug — Trash: Martin Leigh/Oxford Scientifc RM/Getty Images; Khosla: Derick E. Hingle/Bloomberg; Branson: Simon Dawson/Bloomberg; Hay: Jordi Ferre Gicquel/Age Fotostock

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By Andrew Herndon

May 10, 2012 at 11:55 PM UTC

This article is for subscribers only.

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This article is part of the May 14, 2012 issue of businessweek.

As several next-generation biofuel companies prepare stock offerings, investor appetite for the sector may be waning.