May 19 (Reuters) - ArcelorMittal has raised about $667 million (573 million euros) from a secondary share sale of a 10% stake in French steel tubes maker Vallourec, the world's second-largest steelmaker said on Tuesday.

The Luxembourg-based group bought a 28.4% equity stake in Vallourec in March 2024, when Vallourec's shares were trading at around 16 euros, giving it a market value of 3.3 billion euros. That has since jumped by 75% to roughly 6 billion euros.

o ArcelorMittal sold 23.9 million shares in Vallourec for 24 euros apiece

o That represents a discount of nearly 8% to Monday's closing price of 26 euros

o The steelmaker remains supportive of Vallourec's strategy and management, it said in a statement

o ArcelorMittal will retain a 17.3% stake after the deal

o Shares in Vallourec fell about 9% in early Paris trading

(1 euro = $1.1640)

(Reporting by Gianluca Lo Nostro; Editing by Bernadette Baum and Milla Nissi-Prussak)