Valuation above $11bn expected for firm whose fans include Prince Harry, Jennifer Aniston and Kim Kardashian

Fans of Oura are accustomed to using its trendy smart rings to fastidiously monitor their health but now investors are preparing to track a new metric: its share price.

The company’s filing to list imminently on the Nasdaq stock exchange in New York was made public on Thursday.

Latest purchases take value of deals to leave capital’s stock market this year past $100bn

Three more London-listed companies are set to be taken over as the value of deals removing firms from the capital’s under-pressure stock market passes $100bn (£74bn) so far this year.

On Tuesday, Bodycote, the FTSE 250 industrials group that has been listed on the London Stock Exchange since 1972, agreed a £1.84bn takeover by the US private equity group Veritas.

As yields are dragged higher in the UK, Europe and Japan, the impact for consumers and businesses will be far-reaching

• ‘Starve the beast’? The $40tn cost of Republicans’ false promises to cut spending

Government borrowing costs around the world have surged to the highest levels in decades amid growing fears over US bond market turmoil.

Anxiety about Donald Trump’s handling of the US economy, and concern that the US president’s war with Iran is driving up inflation, are causing a sell-off in the US bond market.