Nasdaq's CEO Adena Friedman is optimistic that blockchain, the technology underpinning cryptocurrencies like bitcoin, will play a key role in the economy of the future.
Crude oil prices swung wildly after President Trump announced the United States will withdraw from the Iran nuclear deal and put "powerful" sanctions on the nation.
SeaWorld reported stronger sales and a jump in visitors during the first quarter. But the company is still dealing with the backlash to the 'Blackfish' documentary. Animal rights group PETA says SeaWorld must end all its animal shows.