NYSE

Muppet Kermit the Frog rings the opening bell at the New York Stock Exchange...Muppet Kermit the Frog rings the opening bell at the New York Stock Exchange March 17, 2014.  Kermit rang the bell to celebrate Disney's new movie "Muppets Most Wanted." REUTERS/Brendan McDermid (UNITED STATES - Tags: ENTERTAINMENT)

Brendan McDermid/Reuters

Kermit the Frog rings the opening bell at the New York Stock Exchange on Monday. Kermit rang the bell to celebrate Disney’s new movie Muppets Most WantedRead more

Dick Costolo, Jack Dorsey, Evan Williams, Biz Stone...Twitter CEO Dick Costolo, Chairman and co-founder Jack Dorsey, and co-founders Evan Williams and Biz Stone, front row left to right, applaud as they watch the the New York Stock Exchange opening bell rung, Thursday, Nov. 7, 2013.  If Twitter's bankers and executives were hoping for a surge on the day of the stock's public debut, they got it. The stock opened at $45.10 a share on its first day of trading, 73 percent above its initial offering price.

Richard Drew/AP

(From left) Twitter CEO Dick Costolo, chairman and co-founder Jack Dorsey and co-founders Evan Williams and Biz Stone, applaud as the New York Stock Exchange opening bell is rung, Thursday. If Twitter’s bankers and executives were hoping for a surge on the day of the stock’s public debut, they got it.