CSN and CSN Mineração shares plunge after Q3 2026 earnings miss

Brazilian steel and mining company CSN and its subsidiary CSN Mineração saw sharp share price declines on November 13, 2026, following the release of third-quarter 2026 results that missed market expectations. The magnitude of the miss and specific financial metrics are not detailed in the source, but the negative market reaction indicates a significant earnings disappointment. This matters as CSN is a major Brazilian industrial player, and its performance can influence sector sentiment and broader Brazilian equity markets.

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