Ciena Corporation (CIEN) P/E Ratio History
Historical price-to-earnings valuation from 1997 to 2026
Loading P/E history...
CIEN Valuation Context
How does the current P/E compare to historical and market benchmarks?
P/E Ratio Analysis
As of May 6, 2026, Ciena Corporation (CIEN) trades at a price-to-earnings ratio of 640.9x, with a stock price of $544.75 and trailing twelve-month earnings per share of $1.57.
The current P/E is 887% above its 5-year average of 64.9x. Over the past five years, CIEN's P/E has ranged from a low of 17.0x to a high of 222.9x, placing the current valuation at the 100th percentile of its historical range.
Compared to the Technology sector median P/E of 26.7x, CIEN trades at a 2297% premium to its sector peers. The sector includes 358 companies with P/E ratios ranging from 0.0x to 197.6x.
Relative to the broader market, CIEN commands a significant premium over the S&P 500 median P/E of 25.1x. Investors should consider the company's growth prospects, competitive position, and earnings quality when evaluating whether the current valuation is justified.
For a comprehensive intrinsic value estimate using discounted cash flow analysis, see our CIEN DCF Valuation Calculator →
Note: P/E ratio is just one valuation metric. It does not account for balance sheet strength, cash flow quality, or growth sustainability. Always conduct comprehensive due diligence before making investment decisions.
CIEN P/E vs Peers
P/E ratio compared to closely matched public peers
| Company | Market Cap | P/E Ratio | PEG Ratio | EPS Growth (1Y) |
|---|---|---|---|---|
| $3B | 176.2 | - | +158% | |
| $12B | 359.8 | 78.83 | +225%Best | |
| $71B | 2688.0 | - | +105% | |
| $77B | 104.0 | - | -52% | |
| $37B | 13.7Lowest | 1.21Best | - | |
| $373B | 37.0 | - | +0% | |
| $214B | 61.9 | 1.52 | +23% |
Peers sorted by market capitalization. P/E below peers may indicate undervaluation or lower growth expectations. Consider PEG ratio for growth-adjusted comparison.
CIEN Historical P/E Data (1997–2026)
Quarterly P/E ratios calculated from closing price and TTM EPS
| Quarter | Date | Price | TTM EPS | P/E Ratio | vs Avg |
|---|---|---|---|---|---|
| FY2026 Q1 | Sat Jan 31 2026 00:00:00 GM | $251.81 | $1.57 | 160.2x | -85% |
| FY2025 Q4 | Sat Nov 01 2025 00:00:00 GM | $189.92 | $0.85 | 222.9x | -79% |
| FY2025 Q3 | Sat Aug 02 2025 00:00:00 GM | $88.63 | $0.97 | 91.2x | -91% |
| FY2025 Q2 | Sat May 03 2025 00:00:00 GM | $72.85 | $0.72 | 101.2x | -90% |
| FY2025 Q1 | Sat Feb 01 2025 00:00:00 GM | $87.14 | $0.54 | 162.0x | -85% |
| FY2024 Q4 | Sat Nov 02 2024 00:00:00 GM | $63.97 | $0.57 | 112.6x | -89% |
| FY2024 Q3 | Sat Jul 27 2024 00:00:00 GM | $50.16 | $0.94 | 53.5x | -95% |
| FY2024 Q2 | Sat Apr 27 2024 00:00:00 GM | $46.61 | $1.04 | 44.8x | -96% |
| FY2024 Q1 | Sat Jan 27 2024 00:00:00 GM | $51.42 | $1.54 | 33.4x | -97% |
| FY2023 Q4 | $42.20 | $1.71 | 24.7x | -98% | |
| FY2023 Q3 | Sat Jul 29 2023 00:00:00 GM | $41.58 | $1.48 | 28.1x | -97% |
| FY2023 Q2 | Sat Apr 29 2023 00:00:00 GM | $46.04 | $1.35 | 34.1x | -97% |
Average P/E for displayed period: 1053.3x
Full CIEN Stock Analysis
Analyst consensus, bull case, AI-generated risk factors, and peer comparison — all in one place.
See CIEN's True Return
Price is only half the story. See total return with reinvested dividends.
Launch CalculatorIs CIEN Undervalued?
DCF intrinsic value, peer multiples, and analyst estimates — see what the stock is really worth.
View ValuationCompare CIEN vs NVDA
Side-by-side business, growth, and profitability comparison vs NVIDIA Corporation.
Start ComparisonCIEN — Frequently Asked Questions
Quick answers to the most common questions about buying CIEN stock.
Is CIEN stock overvalued or undervalued?
CIEN trades at 640.9x P/E, above its 5-year average of 64.9x. The 100th percentile ranking indicates a premium to historical valuation.
How does CIEN's valuation compare to peers?
Ciena Corporation P/E of 640.9x compares to sector median of 26.7x. The premium reflects expected growth above peers.
What is CIEN's PEG ratio?
CIEN PEG ratio is N/A. Above 2.0 indicates premium valuation relative to growth rate. Historical P/E data spans 1997-2026.