NVIDIA reported record-breaking financial results for Q4 and fiscal year 2026, with revenue reaching $68.127 billion, a 73% year-over-year increase. Data center revenue also hit a new high at $62.3 billion, accounting for 91.5% of total revenue. Despite these strong figures, NVIDIA's stock fell 5.46% the following day, erasing approximately $260 billion in market value. The market's reaction highlights concerns over NVIDIA's heavy reliance on data center revenue and customer concentration, with two clients contributing 36% of sales. Investors are wary of the company's growth sustainability and the potential impact of shifting capital expenditures and bargaining power dynamics. The decline reflects a broader reassessment of NVIDIA's valuation, focusing on long-term growth prospects rather than immediate earnings performance.