Why Ciena, Lumentum and other optical stocks were among the market’s biggest losers on Monday

A finance story from the U.S., reported by MarketWatch.

Finance · the U.S. · October 12, 2026

From MarketWatch

The sharp moves could partly be a reaction to recent cautious commentary on AI spending.

Reported by MarketWatch, October 12, 2026. Read the full story at MarketWatch →

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