IntercontinentalExchange Inc. (ICE) pushed back the date it intends to close on the company's acquisition of NYSE Euronext (NYX), as the exchange operator moved to provide European regulators more time to sign off on the deal.

The approvals from European regulators are the final step in securing a deal valued at about $10 billion that would create a new exchange giant, running one of the world's largest derivatives franchises and the U.S. stock-market business of the New York Stock Exchange.

Previously, ICE had expected the merger would close on Nov. 4. But just days before that date, the company said the deal's closure will come "to a later date to be announced."

ICE and NYSE haven't extended the election deadline for shareholders to make merger consideration elections and/or cash consideration, which remains at 5 p.m. Eastern time on Thursday.

ICE and NYSE had previously warned that the Nov. 4 closing date could be extended as they await approvals from national European regulators and financial authorities.

Both firms' shares were unchanged in after-hours trading.

--Jacob Bunge contributed to this article

Write to John Kell at john.kell@wsj.com

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