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Market Brief Weekly Review: AI Spending Faces Its Reality Check

Luca Moschini

Luca Moschini

31 Jul 2026 — 6 min read
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Nvidia expands its stock buyback to $235 billion while advancing AI safety technology

Nvidia’s $150 Billion Buyback Signals Confidence as AI Investment and Safety Push Expand

Nvidia authorized an additional $150 billion in share repurchases, lifting its remaining buyback capacity to $235 billion. Shares rose nearly 3% as the AI chip leader paired its record capital-return plan with a new platform focused on AI agent safety.

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MongoDB shares plunge after CEO CJ Desai leaves to lead Meta's enterprise AI platform

MongoDB CEO Exit Triggers 20% Selloff as Leadership Uncertainty Overshadows Strong Growth

MongoDB shares plunged about 20% after CEO CJ Desai abruptly left to lead Meta’s new Enterprise Platform. The departure, one day before MongoDB’s Investor Day, shifted attention from improving business momentum to leadership and execution risk.

28 Sep 2026
Nike faces an earnings test as investors assess the pace of its turnaround

Nike Earnings Loom as Analysts Warn Turnaround May Need Another Reset

Nike reports fiscal first-quarter 2027 results on Oct. 1 after the close, with analysts watching weak demand, promotions, China and wholesale trends for signs that its turnaround is stabilizing—or slipping further behind.

28 Sep 2026
Circle shares fall as CFO transition puts leadership continuity in focus

Circle CFO Transition Tests Confidence as USDC Bank Expansion Advances

Circle Internet Group shares fell after CFO Jeremy Fox-Geen announced plans to step down, putting leadership continuity in focus even as a new Volante Technologies collaboration opens another path for USDC adoption across bank payment systems.

28 Sep 2026

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