Nasdaq OMX Group CEO Robert Greifeld said in a statement that feedback from NYSE Euronext shareholders was positive, and that the companies had expected NYSE Euronext would meet with them to discuss the merits of their proposal.

NYSE Euronext, parent of the New York Stock Exchange, announced Sunday that it was rejecting the joint offer, instead sticking with its plan to combine with German exchange operator Deutsche Boerse AG in a $10 billion deal.

Nasdaq and Intercontinental Exchange say their bid is “clearly superior” and called the Deutsche Boerse proposal “indisputably financially inferior.”