Ciena (CIEN) closed at $300.08 on November 3, 2026, up 5.5% from the previous close, on volume of 3,043,696 shares (30-day average 2,773,186).
Data as of November 3, 2026.
Marvell-Lumentum deal could push Ciena, Cisco to diversify optical supply
Seeking Alpha News (Tue, 3-Nov 1:50 PM ET)
Marvell announces $115B all-stock deal for Lumentum
Seeking Alpha News (Mon, 2-Nov 7:17 AM ET)
Market Chameleon (Mon, 12-Oct 7:24 AM ET)
Market Chameleon (Mon, 12-Oct 5:18 AM ET)
Ciena Appoints Monika Fahlbusch as Chief People Officer
Business Wire (Mon, 12-Oct 9:00 AM ET)
Market Chameleon (Thu, 17-Sep 3:08 AM ET)
Ciena Announces Fiscal Year 2029 Financial Targets
Business Wire (Wed, 16-Sep 1:53 PM ET)
Ciena Launches Ciena Ventures to Expand Innovation Across the AI Networking Ecosystem
Business Wire (Mon, 14-Sep 9:00 AM ET)
Ciena Reports Fiscal Third Quarter 2026 Financial Results
Business Wire (Thu, 3-Sep 7:00 AM ET)
Business Wire (Tue, 25-Aug 9:00 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 November 4, 2026, CIEN stock price declined to $277.61 with 1,208,519 million shares trading.
CIEN has a beta of 1.69, meaning it tends to be more sensitive to market movements. CIEN has a correlation of 0.09 to the broad based SPY ETF.
CIEN has a market cap of $39.10 billion. This is considered a Large Cap stock.
Last quarter Ciena reported $2 billion in Revenue and $2.11 earnings per share. This beat revenue expectation by $32 million and exceeded earnings estimates by $.44.
In the last 3 years, CIEN traded as high as $637.51 and as low as $42.20.
The top ETF exchange traded funds that CIEN belongs to (by Net Assets): VTI, VOO, VO, VUG, IVV.
CIEN has outperformed the market in the last year with a return of +46.4%, while the SPY ETF gained +13.6%. However, in the most recent history, CIEN shares have underperformed the stock market with its stock returning -29.0% in the last 3 month period and -18.8% for the last 2 week period, while SPY has returned +1.7% and -0.1%, respectively.
CIEN support price is $282.61 and resistance is $317.55 (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.
