The start-up that owns the biotechnology behind the Oxford/AstraZeneca vaccine has confidentially filed for an initial public offering in the US, Indian social media group ShareChat has raised more than $500m to grow its popular short-video app Moj, and Austrian activist Max Schrems has filed a privacy complaint against Google in France. Plus, the FT’s Washington bureau chief James Politi has details on the US’s offer to the rest of the world to tax multinational companies.