Canadian Solar Inc. (CSIQ) P/E Ratio History
Deep ValueTrading at -10.5x · 0th percentile of 5-year range · Significant discount to historical valuation · Data 2008–2025
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P/E Ratio Analysis
As of June 21, 2026, Canadian Solar Inc. (CSIQ) trades at a price-to-earnings ratio of -10.5x, with a stock price of $16.27 and trailing twelve-month earnings per share of $-1.51.
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 15.5x, CSIQ trades at a 168% discount to its sector peers. The sector includes 173 companies with P/E ratios ranging from 1.6x to 166.4x.
Relative to the broader market, CSIQ trades at a notable discount to the S&P 500 median P/E of 24.4x. 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 Cross-Benchmark Valuation
How does the current P/E compare to sector peers and the broader market?
CSIQ P/E vs Peers
Solar modules and inverters peers sorted by market cap
| Company | Market Cap | P/E Ratio | PEG Ratio | EPS Growth (1Y) |
|---|---|---|---|---|
| $28B | 18.1 | 0.59Best | +18% | |
| $7B | 40.5 | 6.42 | +72% | |
| $3B | 7.9Lowest | - | +113%Best | |
| $2B | 52.1 | - | +43% |
Lower P/E can signal a discount or weaker growth expectations; PEG adds growth context.
CSIQ Historical P/E Data (2008–2025)
Quarterly P/E ratios calculated from closing price and TTM EPS
| Quarter | Period End | 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 | Sep 30 2024 | $16.76 | $0.02 | 1041.0x | +2168% |
| FY2024 Q2 | Jun 30 2024 | $14.75 | $0.55 | 27.0x | -41% |
| FY2024 Q1 | Mar 31 2024 | $19.76 | $2.86 | 6.9x | -85% |
| FY2023 Q4 | Dec 31 2023 | $26.23 | $3.84 | 6.8x | -85% |
| FY2023 Q3 | Sep 30 2023 | $24.61 | $4.97 | 5.0x | -89% |
| FY2023 Q2 | Jun 30 2023 | $38.69 | $5.75 | 6.7x | -85% |
| FY2023 Q1 | Mar 31 2023 | $39.81 | $4.43 | 9.0x | -80% |
| FY2022 Q4 | Dec 31 2022 | $30.90 | $3.37 | 9.2x | -80% |
| FY2022 Q3 | Sep 30 2022 | $37.25 | $2.65 | 14.1x | -69% |
| FY2022 Q2 | - | $31.14 | $2.07 | 15.0x | -67% |
| FY2022 Q1 | - | $35.36 | $1.20 | 29.5x | -36% |
| FY2021 Q4 | Dec 31 2021 | $31.29 | $1.45 | 21.6x | -53% |
| FY2021 Q3 | - | $34.59 | $1.17 | 29.6x | -36% |
| FY2021 Q2 | Jun 30 2021 | $44.84 | $0.80 | 56.0x | +22% |
| FY2021 Q1 | Mar 31 2021 | $49.63 | $0.96 | 51.7x | +13% |
| FY2020 Q4 | - | $51.24 | $2.44 | 21.0x | -54% |
| FY2020 Q3 | Sep 30 2020 | $35.10 | $3.45 | 10.2x | -78% |
| FY2020 Q2 | - | $19.27 | $4.26 | 4.5x | -90% |
| FY2020 Q1 | - | $15.91 | $4.96 | 3.2x | -93% |
| FY2019 Q4 | - | $22.10 | $2.83 | 7.8x | -83% |
| FY2019 Q3 | Sep 30 2019 | $18.88 | $3.52 | 5.4x | -88% |
| FY2019 Q2 | Jun 30 2019 | $21.83 | $3.65 | 6.0x | -87% |
| FY2019 Q1 | Mar 31 2019 | $18.63 | $2.87 | 6.5x | -86% |
| FY2018 Q4 | Dec 31 2018 | $14.34 | $3.88 | 3.7x | -92% |
| FY2018 Q3 | Sep 30 2018 | $14.50 | $3.08 | 4.7x | -90% |
| FY2018 Q2 | Jun 30 2018 | $12.24 | $2.21 | 5.5x | -88% |
| FY2018 Q1 | Mar 31 2018 | $16.27 | $2.58 | 6.3x | -86% |
| FY2017 Q4 | Dec 31 2017 | $16.86 | $1.63 | 10.3x | -77% |
| FY2017 Q3 | Sep 30 2017 | $16.84 | $0.39 | 43.2x | -6% |
| FY2017 Q2 | Jun 30 2017 | $15.92 | $0.44 | 36.2x | -21% |
| FY2017 Q1 | Mar 31 2017 | $12.27 | $0.49 | 25.0x | -45% |
| FY2016 Q4 | Dec 31 2016 | $12.18 | $1.11 | 11.0x | -76% |
| FY2016 Q3 | Sep 30 2016 | $13.74 | $2.39 | 5.7x | -87% |
| FY2016 Q2 | - | $15.12 | $2.65 | 5.7x | -88% |
| FY2016 Q1 | - | $19.28 | $2.28 | 8.5x | -82% |
| FY2015 Q4 | - | $28.96 | $2.93 | 9.9x | -78% |
| FY2015 Q3 | Sep 30 2015 | $16.62 | $3.16 | 5.3x | -89% |
| FY2015 Q2 | - | $28.60 | $4.38 | 6.5x | -86% |
| FY2015 Q1 | - | $33.39 | $5.02 | 6.7x | -86% |
| FY2014 Q4 | Dec 31 2014 | $24.19 | $4.05 | 6.0x | -87% |
| FY2014 Q3 | - | $35.77 | $3.16 | 11.3x | -75% |
| FY2014 Q2 | Jun 30 2014 | $31.26 | $1.97 | 15.9x | -65% |
| FY2014 Q1 | Mar 31 2014 | $32.04 | $0.73 | 43.9x | -4% |
| FY2013 Q4 | - | $29.82 | $0.56 | 53.3x | +16% |
| FY2008 Q3 | - | $19.53 | $1.50 | 13.0x | -72% |
| FY2008 Q2 | Jun 30 2008 | $40.19 | $1.21 | 33.2x | -28% |
| FY2008 Q1 | Mar 31 2008 | $20.90 | $0.74 | 28.2x | -38% |
Average P/E for displayed period: 45.9x
Intrinsic Valuation
DCF models, multiple analysis, and analyst estimates.
Historical Returns
18+ years return with dividends reinvested.
DCA Calculator
See how regular investing compounds over time.
Peer Comparison
Compare growth, multiples, and margins vs sector.
CSIQ — Frequently Asked Questions
Quick answers to the most common questions about buying CSIQ stock.
What is CSIQ's P/E ratio?
Canadian Solar Inc. (CSIQ) trailing twelve-month P/E ratio is -10.5x, based on TTM diluted EPS of $-1.51. The 5-year average P/E is 91.0x and the historical range spans 4.5x to 1041.0x.
Is CSIQ stock overvalued or undervalued?
CSIQ trades at -10.5x P/E, below its 5-year average of 91.0x. At the 0th percentile of its historical range (4.5x–1041.0x), the stock is priced at a discount to its own history.
Is CSIQ stock expensive?
No, CSIQ is not expensive on a historical basis. The current P/E of -10.5x is below the 5-year average of 91.0x and sits at the 0th percentile of its valuation range.
What is CSIQ's historical P/E range?
Over the past 5 years, CSIQ's P/E ratio has ranged from 4.5x to 1041.0x, with a median of 21.0x and an average of 91.0x. The current P/E of -10.5x places the stock at the 0th percentile of this range. Full historical data spans 2008–2025.
How does CSIQ's P/E compare to the S&P 500?
CSIQ trades at -10.5x P/E versus the S&P 500 median of 24.4x. The 143% discount to the market suggests lower growth expectations or perceived higher risk.
How does CSIQ's valuation compare to Energy peers?
Canadian Solar Inc. P/E of -10.5x compares to the Energy sector median of 15.5x. The discount suggests lower growth expectations, weaker margins, or higher perceived risk relative to peers. See the peer comparison table on this page for ticker-by-ticker P/E and PEG.
What is CSIQ's PEG ratio?
CSIQ PEG ratio is N/A, based on a P/E of -10.5x and EPS growth of -387.0%. PEG normalises P/E by growth and helps compare stocks with different earnings trajectories.
What is CSIQ's earnings yield?
CSIQ earnings yield is N/A, the inverse of its -10.5x P/E ratio. Earnings yield represents the percentage of each dollar invested that the company earns. It can be compared directly to bond yields to assess relative attractiveness of stocks versus fixed income.