# Ciena (CIEN) — News CIEN · NYSE · Stock Canonical page: https://www.lighthorse.io/tickers/cien/news ## Recent headlines - [Ciena (CIEN) fell 5.54% in intraday trading after falling 10.19% on Wednesday, marking a continuation of the prior session's decline.](https://www.ainvest.com/news/ciena-cien-fell-5-54-intraday-trading-falling-10-19-wednesday-marking-continuation-prior-session-decline-2610) — AInvest Wire, Oct 15, 2026 Ciena (CIEN) continued its downward trend on Thursday, falling 5.54% in intraday trading following a 10.19% decline on Wednesday, bringing its price to $359.60 as of October 14. The stock has lost 7.56% over the past four weeks, despite 113.15% increase over 12 months . Analysts project a recovery,… - [Ciena (CIEN) shares fell 5.14% in premarket trading after extending a three-day losing streak. The continued downward momentum reflects sustained selling pressure on the stock over recent sessions.](https://www.ainvest.com/news/ciena-cien-shares-fell-5-14-premarket-trading-extending-day-losing-streak-continued-downward-momentum-reflects-sustained-selling-pressure-stock-sessions-2610) — AInvest Wire, Oct 15, 2026 Ciena (CIEN) shares declined 5.14% in premarket trading on October 15, 2026, extending a three-day losing streak amid sustained selling pressure. The stock has faced downward momentum, with investors seemingly reassessing its valuation and growth prospects. While the company has delivered strong… - [CPO Concept stocks fell in premarket trading, with AXTI down 6.97%, MXL falling 5.28% and CIEN sliding 4.06%.](https://www.ainvest.com/news/cpo-concept-stocks-fell-premarket-trading-axti-6-97-mxl-falling-5-28-cien-sliding-4-06-2610-77) — AInvest Wire, Oct 15, 2026 - [Ciena shares rise 14% to post biggest gain since September 2025](https://www.ainvest.com/news/ciena-shares-rise-14-post-biggest-gain-september-2025-2610) — AInvest Wire, Oct 6, 2026 Ciena Corporation (CIEN) shares rose 14% in recent trading, marking largest single-day gain since September 2025. The surge comes amid renewed investor confidence in the communications technology firm, despite mixed signals from recent financial reports. While the company previously reported… - [CPO Concept stocks fell in regular trading, with CIEN down 3.87%, MXL falling 3.83% and AAOI sliding 3.58%.](https://www.ainvest.com/news/cpo-concept-stocks-fell-regular-trading-cien-3-87-mxl-falling-3-83-aaoi-sliding-3-58-2609) — AInvest Wire, Sep 30, 2026 On September 30, 2026, CPO concept stocks experienced a decline in regular trading, reflecting ongoing market volatility in the sector. CIEN fell 3.87%, MXL dropped 3.83%, and AAOI slid 3.58% . The broader A-share market also showed mixed performance, with over 3,000 stocks declining and the… ## Similar Stocks - [ANET](https://www.lighthorse.io/tickers/anet) — Arista Networks, Inc. Common Stock - [LITE](https://www.lighthorse.io/tickers/lite) — Lumentum Holdings Inc. - Common Stock - [COHR](https://www.lighthorse.io/tickers/cohr) — Coherent Corp. Common Stock - [GLW](https://www.lighthorse.io/tickers/glw) — Corning Incorporated Common Stock - [FN](https://www.lighthorse.io/tickers/fn) — Fabrinet Ordinary Shares - [CLS](https://www.lighthorse.io/tickers/cls) — Celestica, Inc. Common Stock - [AEIS](https://www.lighthorse.io/tickers/aeis) — Advanced Energy Industries, Inc. - Common Stock - [MTSI](https://www.lighthorse.io/tickers/mtsi) — MACOM Technology Solutions Holdings, Inc. - Common Stock --- Light Horse does not author, endorse or verify the headlines, and their appearance here is not an endorsement of any view they express. This page is for informational purposes only. Nothing on it is a recommendation, solicitation or offer to buy or sell any security, nor investment, legal or tax advice. Light Horse Securities Inc does not verify third-party data and is not responsible for its accuracy, completeness or timeliness. Data provided by [AInvest](https://www.ainvest.com).