Ciena (CIEN) closed at $332.73 on October 16, 2026, down 6.7% from the previous close, on volume of 2,954,489 shares (30-day average 2,951,668).
Data as of October 16, 2026.
16-Oct-2026
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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 October 16, 2026, CIEN stock price declined to $332.73 with 2,954,489 million shares trading.
CIEN has a beta of 1.60, 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 $46.87 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 $39.94.
The top ETF exchange traded funds that CIEN belongs to (by Net Assets): VTI, VOO, VO, IVV, VUG.
CIEN has outperformed the market in the last year with a return of +94.8%, while the SPY ETF gained +16.7%. However, in the most recent history, CIEN shares have underperformed the stock market with its stock returning -14.4% in the last 3 month period and -15.0% for the last 2 week period, while SPY has returned +1.9% and -0.8%, respectively.
CIEN support price is $338.35 and resistance is $374.70 (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.
