NEW YORK (Reuters) - Nasdaq OMX Group
Carlyle initiated the discussions and was in early stages of due diligence, when disagreements emerged, bringing the talks to an end, a source familiar with the matter told Reuters on Monday.
The talks, first reported by Fox Business Network, were held about three weeks ago.
Nasdaq spokesman Joseph Christinat said the company does not comment on market rumors or speculation. A spokesman for Carlyle declined to comment.
Shares of Nasdaq were up 3.4 percent at $30.47 early on Monday afternoon.
(Reporting By John McCrank and Gregory Roumeliotis)