Albertsons and Kroger want to merge to form a US grocery giant.

According to persons familiar with the situation, Kroger Co. and rival Albertsons Cos. are in discussions to merge, creating a US supermarket behemoth.

One of the people said, requesting anonymity because the conversation involved secret information, that a cash-and-stock agreement might be finalized as soon as Thursday 

evening in New York, valued at approximately $25 billion for Albertsons. There have been no final choices taken, so the negotiations might still be postponed or fail.

According to data provided by Bloomberg, the possible acquisition would be among the biggest US retail transactions in recent memory and the biggest supermarket sale

since 2006, when Supervalu, CVS Health Corp., and a group of investment companies acquired Albertsons for around $9.8 billion.

According to Numerator, Kroger is the second-largest grocery retailer in the US, with a 9.9% market share, only behind Walmart Inc.'s nearly 21%. 

Fourth place with 5.7% is Albertsons. With the growth of online grocery sales, a hypothetical merger would provide the merged company

more purchasing power, a sizable customer loyalty program, and more investment weight in technology.