Colt and Ciena Set New Benchmark With Fastest Ever Quantum-Safe Transatlantic Data Transmission
Business Wire (Wed, 10-Jun 4:00 AM ET)
Applied Optoelectronics leads networking stocks down following report on CPO rollout delay
Seeking Alpha News (Tue, 9-Jun 3:05 PM ET)
Ciena prices upsized $2.5B senior convertible debt offering
Seeking Alpha News (Tue, 9-Jun 12:50 AM ET)
Ciena Corporation Announces Pricing of Upsized Convertible Senior Notes
Business Wire (Mon, 8-Jun 10:45 PM ET)
$100 Invested In Ciena 5 Years Ago Would Be Worth This Much Today
Benzinga (Mon, 8-Jun 5:00 PM ET)
Seeking Alpha News (Mon, 8-Jun 10:02 AM ET)
Ciena plans $2B debt offering in private placement
Seeking Alpha News (Mon, 8-Jun 8:43 AM ET)
Ciena Announces $2.0 Billion Convertible Notes Offering Plan
TipRanks (Mon, 8-Jun 7:30 AM ET)
Ciena Announces Proposed Offering of Convertible Senior Notes
Business Wire (Mon, 8-Jun 7:00 AM ET)
Market momentum: The S&P 500 stocks that crushed it and crashed this week
Seeking Alpha News (Sun, 7-Jun 6:32 AM ET)
Ciena is a leader in high-speed optical connectivity, providing systems, components, and automation software for telecom providers and enterprises, such as data centers, to enable long-distance connectivity. The company operates through four primary business segments: networking platforms, platform software and services, Blue Planet automation software, and global services. While telecom carriers remain important customers, cloud providers and hyperscalers now drive a significant portion of the business. To meet the demands of AI data centers, customers are adopting Ciena's WaveLogic 6 platform, the first to support 1.6 terabits-per-second capacity.
Ciena trades on the NYSE stock market under the symbol CIEN.
As of June 10, 2026, CIEN stock price declined to $425.11 with 1,930,270 million shares trading.
CIEN has a beta of 1.26, meaning it tends to be more sensitive to market movements. CIEN has a correlation of 0.08 to the broad based SPY ETF.
CIEN has a market cap of $59.88 billion. This is considered a Large Cap stock.
Last quarter Ciena reported $2 billion in Revenue and $1.64 earnings per share. This beat revenue expectation by $69 million and exceeded earnings estimates by $.24.
In the last 3 years, CIEN traded as high as $637.51 and as low as $39.94.
The top ETF exchange traded funds that CIEN belongs to (by Net Assets): VTI, VOO, VB, VO, IVV.
CIEN has outperformed the market in the last year with a return of +486.7%, while the SPY ETF gained +22.8%. In the last 3 month period, CIEN beat the market returning +33.5%, while SPY returned +7.7%. However, in the most recent 2 weeks CIEN has underperformed the stock market by returning -29.4%, while SPY returned -2.9%.
CIEN support price is $418.44 and resistance is $460.24 (based on 1 day standard deviation move). This means that using the most recent 20 day stock volatility and applying a one standard deviation move around the stock's closing price, stastically there is a 67% probability that CIEN shares will trade within this expected range on the day.