DuPont (DD) won its proxy fight against activist investor Nelson Peltz, whose nominees will not be elected to the company's board of directors. The Deal senior editor Ron Orol explains what this means not only for DuPont and Peltz's Trian Fund Management, but other big, high-profile activist shareholders looking to target big corporations. Orol says Peltz is regarded as the 'gold standard' among activists. Now, other activists may look as Peltz's defeat and reconsider their own plans to launch proxy fights with large companies. In fact, Orol considers large corporations the external winners of this battle. He believes big companies who are worried about being targeted may now be able to breath a sigh of relief.