Something to do with the AZ buyout?
The total consideration paid to the Alexion shareholders was approximately $13.3bn in cash and 236,321,411 new AstraZeneca shares (approximately 94% of which will be represented by new AstraZeneca American Depositary Shares (ADSs)).
Admission of the new AstraZeneca shares issued to Alexion shareholders to listing on the premium listing segment of the official list of the Financial Conduct Authority (FCA) and to the trading on the London Stock Exchange’s main market for listed securities has been approved and will be effective at 08:00 BST on 22 July 2021. Trading of the new AstraZeneca shares on Nasdaq Stockholm is expected to commence on 22 July 2021. Trading of the new AstraZeneca ADSs on the Nasdaq Stock Market will commence at 09:30 EDT on 22 July 2021. The Alexion shares will be delisted from the Nasdaq Stock Market and Alexion will terminate its registration under the U.S. Securities Exchange Act of 1934 as soon as practicable following completion of the acquisition.