378.44
price down icon5.35%   -21.41
pre-market  プレマーケット:  379.82   1.38   +0.36%
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Ciena Corp (CIEN) 最新ニュース

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Aug 21, 2026

AB Discovery Value Portfolio's Ciena Corp(CIEN) Holding History - GuruFocus

Aug 21, 2026
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Aug 21, 2026

ION Network deploys Ciena gear for ICS1 connecting Indonesia and Singapore - Developing Telecoms

Aug 21, 2026
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Aug 20, 2026

Ciena vs. Coherent: Which AI Optical Networking Stock is a Better Buy? - Yahoo Finance

Aug 20, 2026
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Aug 20, 2026

Can ION Network's Adoption of WL6e Boost CIEN's Optical Momentum? - Yahoo Finance UK

Aug 20, 2026
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Aug 20, 2026

BofA Securities Adjusts Ciena Price Target to $550 From $660, Maintains Buy Rating - marketscreener.com

Aug 20, 2026
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Aug 20, 2026

BofA cuts Ciena stock price target on optical sector valuation By Investing.com - Investing.com Nigeria

Aug 20, 2026
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Aug 20, 2026

BofA cuts Ciena stock price target on optical sector valuation - Investing.com

Aug 20, 2026
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Aug 20, 2026

Coherent, Teradyne, and Ciena Are the S&P 500’s 3 Biggest Decliners on Tuesday - AOL.com

Aug 20, 2026
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Aug 20, 2026

Why Is Ciena (NYSE:CIEN) in Focus After e& UAE Network Deal? - Kalkine Media

Aug 20, 2026
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Aug 19, 2026

Ciena CEO Sells 2,952 Shares for $1.3 Million - Yahoo Finance

Aug 19, 2026
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Aug 19, 2026

Ciena CEO Sells 2,952 Shares for $1.3 Million - The Motley Fool

Aug 19, 2026
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Aug 19, 2026

Why Ciena Stock Tanked by Almost 9% on Tuesday - AOL.com

Aug 19, 2026
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Aug 19, 2026

Can MOFN Tailwinds Drive Ciena's Service Provider Revenues? - The Globe and Mail

Aug 19, 2026
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Aug 19, 2026

CIEN Upgraded by Northland Capital Markets -- Price Target Raised to $500 - GuruFocus

Aug 19, 2026
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Aug 19, 2026

Northland upgrades Ciena stock rating on strong supplier results By Investing.com - Investing.com Australia

Aug 19, 2026
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Aug 19, 2026

Why is Ciena stock gaining today? By Investing.com - Investing.com Australia

Aug 19, 2026
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Aug 19, 2026

This Ciena Analyst Turns Bullish; Here Are Top 5 Upgrades For Wednesday - Benzinga

Aug 19, 2026
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Aug 19, 2026

Ciena (NYSE:CIEN) Upgraded to "Outperform" at Northland Securities - MarketBeat

Aug 19, 2026
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Aug 19, 2026

CIEN Looks 305.4% Overvalued on GF Value™ - GuruFocus

Aug 19, 2026
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Aug 19, 2026

Why is Ciena stock gaining today? - Investing.com

Aug 19, 2026
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Aug 19, 2026

TD Cowen Adjusts Price Target on Ciena to $575 From $675, Maintains Buy Rating - marketscreener.com

Aug 19, 2026
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Aug 18, 2026

Ciena SVP & CFO Marc Graff sells $2.15m in company stock - Investing.com

Aug 18, 2026
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Aug 18, 2026

Marc Graff Sells 4,995 Shares of Ciena (NYSE:CIEN) Stock - MarketBeat

Aug 18, 2026
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Aug 18, 2026

Ciena SVP Brodie Gage Executes Sale of 1,200 Shares via 10b5-1 Trading Plan - Kalkine Media

Aug 18, 2026
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Aug 18, 2026

Ciena Insider Sold Shares Worth $1,095,250, According to a Recent SEC Filing - marketscreener.com

Aug 18, 2026
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Aug 18, 2026

Ciena (NYSE: CIEN) exec sells 2,500 shares under trading plan - Stock Titan

Aug 18, 2026
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Aug 18, 2026

Ciena Insider Sold Shares Worth $1,321,840, According to a Recent SEC Filing - marketscreener.com

Aug 18, 2026
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Aug 18, 2026

Ciena Insider Sold Shares Worth $527,088, According to a Recent SEC Filing - marketscreener.com

Aug 18, 2026
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Aug 18, 2026

Ciena (NYSE: CIEN) exec sale leaves 38,407-share stake - Stock Titan

Aug 18, 2026
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Aug 18, 2026

Why Is CIEN Stock Falling Today? - Stocktwits

Aug 18, 2026
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Aug 18, 2026

Why is Ciena stock sliding today? By Investing.com - Investing.com Australia

Aug 18, 2026
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Aug 18, 2026

CIEN Maintained by TD Cowen -- Price Target Lowered to $575 - GuruFocus

Aug 18, 2026
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Aug 18, 2026

Why is Ciena stock sliding today? - Investing.com

Aug 18, 2026
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Aug 18, 2026

TD Cowen Lowers Ciena (NYSE:CIEN) Price Target to $575.00 - MarketBeat

Aug 18, 2026
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Aug 18, 2026

Plato Investment Management Ltd Takes Position in Ciena Corporation $CIEN - MarketBeat

Aug 18, 2026
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Aug 18, 2026

Ciena Corp (CIEN) Earnings Forecast: Future EPS & Revenue Growth Estimates - TradingKey

Aug 18, 2026
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Aug 17, 2026

Paralel Advisors LLC's Ciena Corp(CIEN) Holding History - GuruFocus

Aug 17, 2026
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Aug 17, 2026

Ciena Corp (CIEN) Shares Surge 3.8% -- What GF Score of 72 Tells Investors - GuruFocus

Aug 17, 2026
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Aug 17, 2026

$1000 Invested In Ciena 15 Years Ago Would Be Worth This Much Today - Benzinga

Aug 17, 2026
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Aug 17, 2026

Ciena (NYSE: CIEN) affiliate plans $527K sale of 1,200 shares - Stock Titan

Aug 17, 2026
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Aug 17, 2026

AI Networking Stocks Are Rallying on Monday. Marvell Up 8%, Credo Up 8%, Ciena Joins the Move - Yahoo Finance

Aug 17, 2026
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Aug 17, 2026

Ciena rises as AI networking demand and prior capital actions remain in focus - Quiver Quantitative

Aug 17, 2026
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Aug 17, 2026

Ciena Corp Stock (CIEN) Moved Up by 6.53% on Aug 17: A Full Analysis - TradingKey

Aug 17, 2026
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Aug 17, 2026

Ciena Corporation Price Today | XCIEN Live Price, Chart & Market Cap - okx.com

Aug 17, 2026
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Aug 17, 2026

Ciena (NYSE:CIEN) Passes the Eight-Rule Growth Screen: Earnings, Margins, and Cash Flow All Accelerating - ChartMill

Aug 17, 2026
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Aug 17, 2026

Ciena Corp (CIEN) Technical Analysis: Support, Resistance, Indicators & Moving Averages - TradingKey

Aug 17, 2026
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Aug 17, 2026

Ciena Corp (CIEN) Stock News Today - TradingKey

Aug 17, 2026
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Aug 16, 2026

Ciena Corporation $CIEN Shares Purchased by Empowered Funds LLC - MarketBeat

Aug 16, 2026
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Aug 15, 2026

AI networking demand is redrawing the enterprise hardware race - grafa.com

Aug 15, 2026
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Aug 15, 2026

Equity Index Portfolio's Ciena Corp(CIEN) Holding History - GuruFocus

Aug 15, 2026
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Aug 15, 2026

Fidelity Mid Cap Value Fund's Ciena Corp(CIEN) Holding History - GuruFocus

Aug 15, 2026
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Aug 14, 2026

Dedeker Financial LLC's Ciena Corp(CIEN) Holding History - GuruFocus

Aug 14, 2026
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Aug 14, 2026

Ciena Corp (CIEN) Stock Down 3.2% but Still Overvalued -- GF Sco - GuruFocus

Aug 14, 2026
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Aug 14, 2026

Ciena (NYSE:CIEN) Stock Price Down 3.1%Should You Sell? - MarketBeat

Aug 14, 2026
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Aug 14, 2026

Ciena (CIEN) insider files to sell 2,500 shares after recent 10b5-1 sales - Stock Titan

Aug 14, 2026
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Aug 14, 2026

Ciena (CIEN) insider Marc Graff files Form 144 to sell 4,995 shares - Stock Titan

Aug 14, 2026
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Aug 14, 2026

Ciena Corp (Derivatives): Latest News, Social Media Updates and Insights - CryptoRank

Aug 14, 2026
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Aug 14, 2026

Will Ciena's Rising Backlog Improve Revenue Visibility Into 2027? - The Globe and Mail

Aug 14, 2026
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Aug 14, 2026

U.S. Market Moves Higher — One Stock to Consider: Ciena Corporation - Kalkine

Aug 14, 2026
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Aug 14, 2026

CIEN|Ciena Corp|Price:442.760|Chg%:+10.710 - tradingkey.com

Aug 14, 2026
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Aug 14, 2026

Ciena Corporation (CIEN) Stock Price, News, Quote & History - Yahoo! Finance Canada

Aug 14, 2026
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Aug 13, 2026

Ciena (NYSE:CIEN) Trading Up 2.8%Should You Buy? - MarketBeat

Aug 13, 2026
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