March 27 (Reuters) - Walmart ( WMT ) has notified two

U.S. antitrust agencies it will withdraw and refile a certain

review application for its planned acquisition of Vizio ( VZIO )

, to give the regulators more time to review the deal.

Following informal discussions with the Federal Trade

Commission and the Department of Justice, Walmart's ( WMT )

Hart-Scott-Rodino notification and report form was withdrawn

effective as of March 27 and it expects to refile on March 29,

Vizio ( VZIO ) said on Wednesday.

The Hart-Scott-Rodino Antitrust Improvements Act of 1976

requires parties to report large transactions to both the

agencies for antitrust review.

The law sets a 30-day waiting period for parties to close

transactions, giving the agency time to consider and block

proposed mergers before they are consummated.

The waiting period for Walmart-Vizio will expire on Friday

unless extended by a request for additional information. Upon

renewing the filing, the waiting period will expire on April 29.

Walmart ( WMT ) in February proposed to buy smart-TV maker Vizio ( VZIO ) for

$11.50 per share in cash in a $2.3 billion deal, another bet on

the retailer's fast-growing U.S. advertising business, Walmart

Connect.

(Reporting by Ananya Mariam Rajesh in Bengaluru; Editing by

Devika Syamnath)