Apple and Microsoft’s valuation hit $4tn as stock market bubble fears grow

Appl’s shares rose by 15pc in 2025 Apple and Microsoft both surpassed $4tn (£3tn) valuations on Tuesday as fears mount that the US stock market is entering bubble territory. Shares in the two tech behemoths hit record highs as Wall Street’s main stock indexes jumped, with excitement growing around the potential of artificial intelligence (AI). Both companies have seen their valuations surge this year despite having already been amongst the most valuable companies in the world at the start of the year. ...