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Nvidia's collaboration with Microsoft on a new processor has led to significant premarket gains for both companies and their partners, while competitors faced declines. Additionally, Taylor Morrison's shares surged following Berkshire Hathaway's acquisition announcement.

The rise of generative AI, particularly following the launch of ChatGPT, has significantly impacted the valuations of many startups that were thriving before its introduction, leading to a wave of 'fallen unicorns' unable to secure new funding or justify their previous valuations. This shift highlights a critical transformation in the venture capital landscape, favoring AI-native companies over those reliant on outdated technologies.

The retail sector showed resilience in the first quarter of 2026, buoyed by higher tax refunds and increased use of buy now, pay later services, but analysts warn that the upcoming quarter may reveal underlying weaknesses as these supports fade.

The experimental lung cancer drug ivonescimab from Akeso and Summit Therapeutics has shown a 34% reduction in the risk of death in a late-stage trial, which could position it as a significant player in the oncology market, particularly for squamous non-small-cell lung cancer patients.