Last November, Atlas Investissement told Luxembourg's markets regulator that it owned about 7% of Millicom's shares.

Millicom provides fixed and mobile telecommunications services in Latin America, through its TIGO brand.

At end 2022, the group, listed in the United States with a market capitalization of $3.54 billion, said it employed about 20,000 people.

Millicom's full-year 2022 sales totalled $5.62 billion, up 3.3% from a year earlier on an underlying basis, with an operating profit of $915 million, it said last week.

(Reporting by Mathieu Rosemain; Editing by Leslie Adler and Marguerita Choy)