Canadian Solar Inc. (CSIQ) P/E Ratio History
Historical price-to-earnings valuation from 2008 to 2025
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CSIQ Valuation Context
How does the current P/E compare to historical and market benchmarks?
P/E Ratio Analysis
As of May 6, 2026, Canadian Solar Inc. (CSIQ) trades at a price-to-earnings ratio of -10.8x, with a stock price of $16.80 and trailing twelve-month earnings per share of $-1.54.
The current P/E is 112% below its 5-year average of 91.0x. Over the past five years, CSIQ's P/E has ranged from a low of 4.5x to a high of 1041.0x, placing the current valuation at the 0th percentile of its historical range.
Compared to the Energy sector median P/E of 17.1x, CSIQ trades at a 163% discount to its sector peers. The sector includes 172 companies with P/E ratios ranging from 3.2x to 149.1x.
Relative to the broader market, CSIQ trades at a notable discount to 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 CSIQ 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.
CSIQ P/E vs Peers
P/E ratio compared to closely matched public peers
| Company | Market Cap | P/E Ratio | PEG Ratio | EPS Growth (1Y) |
|---|---|---|---|---|
| $24B | 15.4 | 0.50Best | +18% | |
| $5B | 27.9 | 4.43 | +72% | |
| $3B | 7.9Lowest | - | +113%Best | |
| $1B | 40.6 | - | +43% |
Peers sorted by market capitalization. P/E below peers may indicate undervaluation or lower growth expectations. Consider PEG ratio for growth-adjusted comparison.
CSIQ Historical P/E Data (2008–2025)
Quarterly P/E ratios calculated from closing price and TTM EPS
| Quarter | Date | Price | TTM EPS | P/E Ratio | vs Avg |
|---|---|---|---|---|---|
| FY2025 Q3 | $13.04 | $0.03 | 434.7x | +847% | |
| FY2024 Q4 | $11.12 | $0.52 | 21.5x | -53% | |
| FY2024 Q3 | Mon Sep 30 2024 00:00:00 GM | $16.76 | $0.02 | 1041.0x | +2168% |
| FY2024 Q2 | Sun Jun 30 2024 00:00:00 GM | $14.75 | $0.55 | 27.0x | -41% |
| FY2024 Q1 | Sun Mar 31 2024 00:00:00 GM | $19.76 | $2.86 | 6.9x | -85% |
| FY2023 Q4 | Sun Dec 31 2023 00:00:00 GM | $26.23 | $3.84 | 6.8x | -85% |
| FY2023 Q3 | Sat Sep 30 2023 00:00:00 GM | $24.61 | $4.97 | 5.0x | -89% |
| FY2023 Q2 | Fri Jun 30 2023 00:00:00 GM | $38.69 | $5.75 | 6.7x | -85% |
| FY2023 Q1 | Fri Mar 31 2023 00:00:00 GM | $39.81 | $4.43 | 9.0x | -80% |
| FY2022 Q4 | Sat Dec 31 2022 00:00:00 GM | $30.90 | $3.37 | 9.2x | -80% |
| FY2022 Q3 | Fri Sep 30 2022 00:00:00 GM | $37.25 | $2.65 | 14.1x | -69% |
| FY2022 Q2 | $31.14 | $2.07 | 15.0x | -67% |
Average P/E for displayed period: 45.9x
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Start ComparisonCSIQ — Frequently Asked Questions
Quick answers to the most common questions about buying CSIQ stock.
Is CSIQ stock overvalued or undervalued?
CSIQ trades at -10.8x P/E, below its 5-year average of 91.0x. At the N/A percentile of historical range, the stock is priced at a discount to its own history.
How does CSIQ's valuation compare to peers?
Canadian Solar Inc. P/E of -10.8x compares to sector median of 17.1x. The discount suggests lower growth expectations or higher risk.
What is CSIQ's PEG ratio?
CSIQ PEG ratio is N/A. Above 2.0 indicates premium valuation relative to growth rate. Historical P/E data spans 2008-2025.