Ciena, Lumentum and Other Optical Stocks Slide on AI Spending Worries
Optical networking stocks Ciena and Lumentum were among Monday's biggest losers after cautious commentary on AI spending, even as the Dow edged up 0.38% and the Nasdaq slipped 0.44%.
Ciena, Lumentum, and other optical stocks took a hit on Monday, with the market experiencing a sharp decline. Recent market fluctuations may be linked to concerns about investing in AI technology. This development coincides with Salesforce's upgrade, with investors showing little enthusiasm for the company's stock ahead of a packed week of earnings reports and inflation updates. The market's volatility is a normal occurrence, with prices fluctuating up and down as investors respond to various factors. No specific numbers were given for the decline, but it was described as 'sharp' by MarketWatch.
Why it matters
For everyday investors, this means that the market can be unpredictable and that it's essential to stay informed and adapt to changing conditions. It's also important to diversify your portfolio and not put all your eggs in one basket.
What's next
The market will continue to fluctuate as investors respond to new information and data. The upcoming week will be busy with earnings and inflation data, which could impact stock prices.
How the story unfolded
Read the original reporting
- MarketWatch – Why Ciena, Lumentum and other optical stocks were among the market’s biggest losers on Monday ↗
- CNBC – Jim Cramer's top 10 things to watch in the stock market Monday ↗
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Frequently asked questions
What do we know about stock market Today?
Optical networking stocks Ciena and Lumentum were among Monday's biggest losers after cautious commentary on AI spending, even as the Dow edged up 0.38% and the Nasdaq slipped 0.44%. Ciena and Lumentum were among the market's biggest losers on Monday
When was this stock market Today news reported?
FlashFeed published this brief on October 13, 2026. The earliest report it draws on, from CNBC, is dated October 12, 2026.
What are the main details of the stock market Today story?
Recent cautious commentary on AI spending may have contributed to the decline
Why is stock market Today in the news?
For everyday investors, this means that the market can be unpredictable and that it's essential to stay informed and adapt to changing conditions. It's also important to diversify your portfolio and not put all your eggs in one basket.
What happens next with stock market Today?
The market will continue to fluctuate as investors respond to new information and data. The upcoming week will be busy with earnings and inflation data, which could impact stock prices.
Where can I read more about stock market Today?
This brief is based on reporting from CNBC and MarketWatch. Links to their original stories are listed on this page.
Not financial advice: This brief is general news for information only. It is not a recommendation to buy, sell or hold any investment. Prices can go down as well as up – do your own research or talk to a licensed adviser.
How we made this brief: FlashFeed brings together facts reported by the outlets listed above and writes a fresh, short explanation with the help of AI. Every brief is checked so it does not copy the publishers' wording. The original reporting belongs to those outlets – please read their full stories.
