Likewise, investors significantly punished companies for eco-harmful events with a corresponding abnormal return of -.65%.

FORBES: CSR Pays for Itself: Here's the Evidence

Specifically, the impact of eco-harmful events has gone from an abnormal return of -.42% in the 1980s to -.66% in the 1990s and as high as -1.12% in the 2000s.

FORBES: CSR Pays for Itself: Here's the Evidence