After the Asian financial crisis of 1997, Big C Supercenter PCL formed a business alliance with France-based Groupe Casino, known for its Géant stores.

Groupe Casino bought 530 million shares of a capital increase in 1999, making them the largest shareholder after the company's recapitalization.

Compact Stores each require an investment of between 300 and 400 million baht, and have an average retail space of 5,000-6,000 square metres, whereas Big C's standard stores have retail space of about 10,000 square metres and require an investment of between 600 and 700 million baht.

In 2010, Big C announced that it would open its first store in Laos, inside The New Taladsao Shopping Mall in Vientiane, in late 2012.

[10][11][12][13] In November 2010, Big C won a bid to buy the 42 Carrefour branches in Thailand for €868 million (35.4 billion baht).

After the acquisition, Groupe Casino, whose Thai subsidiary is Big C Supercenter PCL, owned 111 hypermarkets versus Tesco's 87.

Carrefour was at that time the local operator of Lotus's hypermarkets, but was later taken over by Big C which caused the lawsuit.

[6] Big C is now operated and managed under Berli Jucker Public Company Limited, part of TCC Group.

[17] The attack was most likely perpetrated by local Muslim residents, although Lieutenant General Piyawat Nakwanich said that it was most likely a reaction against the presence of big businesses in the area.

[18] In January 2020, CEO Aswin Techajareonvikul acknowledged the company's intent to acquire the operations of Tesco Lotus in Thailand and Malaysia.

On 29 August, Big C postponed its return to the Stock Exchange of Thailand due to market conditions caused by the political climate of deadlock following the 2023 elections.

[28] Products produced in Laos are also being distributed by Big C to stores across different countries in cooperation with the Ministry of Industry and Commerce.

In early 2023, Big C partnered with the Overseas Cambodian Investment Corporation (OCIC) to construct the first hypermarket in Khan Chroy Changvar.

Berli Jucker, which owns a majority stake in Big C in Thailand, Laos and Cambodia, will invest one billion baht in 2020 to open three MM Mega Market wholesale stores in Vietnam next year, bringing the total number of MM Mega Market stores there to 21 branches.