Paris-based pharmaceutical company Sanofi sells $13bn stake in biotech Regeneron. The biotech company will repurchase $5bn of stock from Sanofi, while the French company plans to sell a further $7bn-worth shares in the largest public equity offering in the healthcare industry.

Also, both companies have confirmed that they will continue working together on promising eczema and rheumatoid arthritis drugs, which has shown promise to treat inflammatory response to the coronavirus.