Private equity firm Cerberus Capital Management, which owns a stake in grocer Albertsons , and billionaire investor Dean Metropoulos teamed up in an unsuccessful bid for cereal maker WK Kellogg , according to three sources familiar with the matter.

Italian confectioner Ferrero, known for brands like Nutella and Kinder, is buying the century-old U.S. cereal company WK Kellogg in an effort to expand its North American sales.

Shares of WK Kellogg ( KLG) surged 30% Thursday as the maker of Froot Loops and Frosted Flakes announced it had reached a deal to be acquired by Italian sweets company The Ferrero Group for $23 per share in cash, or about $3.1 billion.

WK Kellogg—whose brands include Froot Loops, Frosted Flakes and Rice Krispies—was spun off from Kellogg in 2023, a move that separated its North American cereal business from its remaining global snacking business, which was named Kellanova.

U.S. sales of the colorfully packaged morning staple have been in a decades-long decline, a trend back in the spotlight with news that Italian confectioner Ferrero Group plans to purchase WK Kellogg, maker of Corn Flakes, Froot Loops, Rice Krispies and other familiar brands.

Fererro Group, the Italian candy maker known for Nutella, is buying WK Kellogg for a whopping $3.1 billion. Changes are coming in Michigan for behavioral health services and how they’re provided through Medicaid.

WK Kellogg Co. jumped nearly 30% on July 10 following the announcement from Italian food leader Ferrero regarding a $3.1 billion acquisition, inclusive of debt.

Ferrero has signed a deal to take WK Kellogg private in an agreement worth $3.1 billion, The Associated Press reported.