P/E ratio for Ciena (CIEN)
P/E ratio as of May 2023 (TTM): 39.0
According to Ciena's latest financial reports and stock price the company's current price-to-earnings ratio (TTM) is 39.0163. At the end of 2021 the company had a P/E ratio of 23.9.
P/E ratio history for Ciena from 2001 to 2022
PE ratio at the end of each year
| Year | P/E ratio | Change |
|---|---|---|
| 2021 | 23.9 | 5.84% |
| 2020 | 22.6 | -13.23% |
| 2019 | 26.0 | -283.46% |
| 2018 | -14.2 | -698.58% |
| 2017 | 2.37 | -94.95% |
| 2016 | 46.9 | -75.04% |
| 2015 | 188 | -477.93% |
| 2014 | -49.8 | 74.7% |
| 2013 | -28.5 | 164.92% |
| 2012 | -10.8 |
P/E ratio for similar companies or competitors
| Company | P/E ratio | P/E ratio differencediff. | Country |
|---|---|---|---|
 Cisco CSCO | 18.2 | -53.36% | 🇺🇸 USA |
 Juniper Networks
JNPR | 19.7 | -49.57% | 🇺🇸 USA |
 Infinera INFN | -24.6 | -163.05% | 🇺🇸 USA |
 ADTRAN ADTN | -19.3 | -149.35% | 🇺🇸 USA |
 Calix CALX | 68.6 | 75.76% | 🇺🇸 USA |
How to read a P/E ratio?
The Price/Earnings ratio measures the relationship between a company's stock price and its earnings per share. A low but positive P/E ratio stands for a company that is generating high earnings compared to its current valuation and might be undervalued. A company with a high negative (near 0) P/E ratio stands for a company that is generating heavy losses compared to its current valuation.
Companies with a P/E ratio over 30 or a negative one are generaly seen as "growth stocks" meaning that investors typically expect the company to grow or to become profitable in the future.
Companies with a positive P/E ratio bellow 10 are generally seen as "value stocks" meaning that the company is already very profitable and unlikely to strong growth in the future.