David Einhorn is the 2nd activist to target GM in 2 years — one chart explains why (GM)

Greenlight Capital's David Einhorn is gunning for General Motors. The investor has turned activist and rolled out an unprecedented proposal to create two classes of GM stock, one driven by growth and the other supported by a permanent dividend.
After studying Einhorn's proposal for seven months, GM rejected the plan as well as his goal of getting four seats on GM's board. Thus far both Moody's and S&P have sided with GM's argument that Einhorn's idea would sink the carmaker's investment-grad