Jamie Dimon-the most influential on Wall Street? By: CNBC.com News February 20, 2014 at 12:59 PM EST Are big bank leaders like Jamie Dimon the most influential on Wall Street-or activist investors like Carl Icahn? Read More >> Related Stocks: Apple Bank of America Charles Schwab Citigroup Goldman Sachs Group Herbalife Ltd JPMorgan Chase & Co Netflix Time Warner Viacom Western Union eBay