IREN stock falls 17% as Bitcoin mining revenue drops 58%

The first and largest cryptocurrency, created in 2009, with a fixed maximum supply and no central issuer.

Its price swings and adoption by funds and companies make it a bellwether for the whole crypto market.

The total money a company earns from selling goods or services before any costs are subtracted.

Revenue growth shows demand for a company's products; profit shows whether it earns money from them.

Computer systems that perform tasks that normally require human intelligence, such as understanding language, recognising images or making decisions.

AI is changing work, media and public services, raising questions about jobs, safety and regulation.