https://www.live-feeds.com/feed/four-years-in-40-trillion-up-why-this-ai-fueled-bull-market-has-room-to-runContinuously updated, source-cited coverage. https://www.live-feeds.com/feed/four-years-in-40-trillion-up-why-this-ai-fueled-bull-market-has-room-to-runhttps://www.live-feeds.com/feed/four-years-in-40-trillion-up-why-this-ai-fueled-bull-market-has-room-to-run#u122824Thu, 15 Oct 2026 04:08:40 +0000The US stock market, driven by an artificial-intelligence boom, has turned four years old. It has produced numerous closing highs and added nearly $40 trillion in overall market value since bottoming out in October 2022. The S&P 500 has seen significant growth, with some analysts predicting further increases. However, concerns about yields and potential corrections remain.Why it mattersThe bull market's longevity and growth have raised questions about its sustainability. The AI investment boom has been a key driver, transforming the market since autumn 2022. This has led to a substant