P/E ratio for Ciena (CIEN)
P/E ratio as of April 2025 (TTM): 40.6
According to Ciena's latest financial reports and stock price the company's current price-to-earnings ratio (TTM) is 40.557. At the end of 2022 the company had a P/E ratio of 50.0.
P/E ratio history for Ciena from 2001 to 2023
PE ratio at the end of each year
| Year | P/E ratio | Change |
|---|---|---|
| 2022 | 50.0 | 109.09% |
| 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 | 82.19% |
| 2011 | -5.90 | 0.38% |
| 2010 | -5.88 | 244.98% |
| 2009 | -1.70 | -111.45% |
| 2008 | 14.9 | -57.66% |
| 2007 | 35.2 | -97.46% |
| 2006 | > 1000 | -35383.54% |
| 2005 | -3.92 | 76.11% |
| 2004 | -2.23 | -70.47% |
| 2003 | -7.54 | 548.4% |
| 2002 | -1.16 | -53.35% |
| 2001 | -2.49 |
P/E ratio for similar companies or competitors
| Company | P/E ratio | P/E ratio differencediff. | Country |
|---|---|---|---|
 | -221 | -645.73% | 🇺🇸 USA |
 | -9.28 | -122.87% | 🇺🇸 USA |
 | 31.7 | -21.73% | 🇺🇸 USA |
 | 48.5 | 19.70% | 🇺🇸 USA |
 | 20.0 | -50.76% | 🇺🇸 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.