Nasdaq CEO Greifeld on Halt: 'We're Not Perfect'

Aug. 23 (Bloomberg) -- Robert Greifeld, CEO at Nasdaq, talks with Betty Liu, offering an explanation about Thursday's outage that halted trading for three hours. He speaks on Bloomberg Television's "Bloomberg Surveillance."
What's Next for Nigeria?
19:57 - Former military ruler Muhammadu Buhari won Nigeria’s presidency, beating Goodluck Jonathan. Bloomberg's Richard Wallace has reaction from Lagos. He speaks with Bloomberg's Alix Steel on "Street Smart."
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