CIEN
Ciena
PEG ratio, current and historical analysis
- Stocks
- Technology
- NYSE: CIEN
- PEG Ratio
As of Jun 23, 2026, CIEN's PEG ratio of 0.46 reflects its valuation relative to its growth. This value reflects a P/E ratio of 148.82 measured against EPS growth of 323.3%. When compared to the trailing four-quarter average of 6.69, CIEN's PEG ratio shows a 93% decrease.
CIEN PEG ratio history
Ciena's ten years historical PEG ratio has an average of 1.43. Compared to historical data, CIEN's 0.46 PEG ratio represents a decrease of 68%. CIEN reached its maximum PEG ratio of 21.03 during the Aug 2025 quarter over the past ten years. The Oct 2017 quarter had the bottom reading at 0, indicating the most optimal growth-adjusted valuation.
Ciena PEG ratio by year
| Year | PEG ratio | PE ratio | Growth YoY |
|---|---|---|---|
| 2025 | 4.37 | 218.3 | 50% |
| 2024 | N/A | 110.29 | -66.1% |
| 2023 | 0.35 | 23.99 | 69.3% |
| 2022 | N/A | 47.77 | -68.6% |
| 2021 | 0.45 | 16.86 | 37.6% |
| 2020 | 0.39 | 16.83 | 43.6% |
| 2019 | 0.14 | 22.77 | 167.9% |
| 2018 | N/A | N/A | -127% |
| 2017 | 0 | 2.39 | 1,609.6% |
| 2016 | 0.09 | 37.27 | 420% |
| 2015 | 1.91 | 241.4 | 126.3% |
| 2014 | N/A | N/A | 54.2% |
| 2013 | N/A | N/A | 42.8% |
| 2012 | N/A | N/A | 28.9% |
| 2011 | N/A | N/A | 43% |
Ciena PEG ratio by quarter (TTM)
| Year | PEG ratio | PE ratio | Growth YoY |
|---|---|---|---|
| May 2026 | 0.54 | 173.23 | 323.3% |
| Jan 2026 | 0.81 | 156.4 | 192.7% |
| Nov 2025 | 4.37 | 218.3 | 50% |
| Aug 2025 | 21.03 | 90.44 | 4.3% |
| May 2025 | N/A | 99.79 | -29.8% |
| Feb 2025 | N/A | 158.44 | -64.5% |
| Nov 2024 | N/A | 110.29 | -66.1% |
| Jul 2024 | N/A | 53.36 | -36.5% |
| Apr 2024 | N/A | 44.82 | -23% |
| Jan 2024 | 1.23 | 33.17 | 27% |
| Oct 2023 | 0.35 | 23.99 | 69.3% |
| Jul 2023 | 2.04 | 28.09 | 13.8% |
| Apr 2023 | N/A | 34.1 | -51.1% |
| Jan 2023 | N/A | 41.83 | -61.4% |
| Oct 2022 | N/A | 47.77 | -68.6% |
CIEN average PEG ratio chart
CIEN's PEG ratio today is below the 3, 5 and 10-year averages.
PEG comparison
With a PEG of 0.46, CIEN stands below the Technology sector and the industry average. Compared to its Technology sector average of 0.74, Ciena's PEG is 38% lower.
CIEN EPS growth
CIEN Price vs fair value
CIEN PEG vs peers
Compared to its peers, CIEN's PEG ratio is under CSCO's but above CALX's.
| Stock name | PEG ratio | Market cap |
|---|---|---|
| CALX Calix Inc | 0.35 | $2.32B |
| CIEN Ciena Corp | 0.46 | $65.09B |
| CSCO Cisco Systems Inc | 1.8 | $477.5B |
| ADTN Adtran Inc | N/A | $1.17B |
Frequently asked questions
What is Ciena's PEG ratio?
CIEN's Jun 23, 2026 PEG ratio comes in at 0.46.
What is the 3-year average PEG ratio for Ciena (CIEN)?
CIEN has a 3-year average PEG ratio of 4.34.
What is the 5-year average PEG ratio for Ciena (CIEN)?
CIEN has a 5-year average PEG ratio of 3.04.
What is the highest PEG ratio for CIEN?
In the last ten years, CIEN's peak PEG ratio of 21.03 was recorded in the Aug 2025 quarter.
How does the current PEG ratio for CIEN compare to its historical average?
Currently, CIEN's PEG ratio is 68% lower than its 10-year historical average.
Why is Ciena's PEG ratio so low?
The 0.46 PEG ratio for CIEN reflects strong earnings growth outpacing the current valuation.
How is CIEN's PEG ratio calculated (Ciena PEG ratio formula)?
The PEG ratio comes from taking PE and dividing by the rate at which earnings are growing (YoY TTM). As of Jun 23, 2026, Ciena has a P/E ratio of 148.82. Earnings grew at 323.3% over the TTM period ending May 2026. Applying the formula, this produces a price to earnings growth ratio of 0.46. PEG RATIO(0.46) = PE RATIO(148.82) / EPS GROWTH(323.3%)
All PEG ratio stats are based on quarterly TTM periods, unless otherwise specified.