SunPower Inc. (SPWR) P/E Ratio History
Deep ValueTrading at -39.8x · 0th percentile of 5-year range · Significant discount to historical valuation · Data 2025–2025
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P/E Ratio Analysis
As of November 8, 2026, SunPower Inc. (SPWR) trades at a price-to-earnings ratio of -39.8x, with a stock price of $0.27 and trailing twelve-month earnings per share of $-0.01.
The current P/E is 170% below its 5-year average of 56.7x. Over the past five years, SPWR's P/E has ranged from a low of 56.7x to a high of 56.7x, placing the current valuation at the 0th percentile of its historical range.
Compared to the Energy sector median P/E of 12.6x, SPWR trades at a 415% discount to its sector peers. The sector includes 159 companies with P/E ratios ranging from 0.1x to 148.1x.
Relative to the broader market, SPWR trades at a notable discount to the S&P 500 median P/E of 21.8x. 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 SPWR 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.
SPWR Cross-Benchmark Valuation
How does the current P/E compare to sector peers and the broader market?
SPWR P/E vs Peers
Solar Equipment and Installers peers sorted by market cap
| Company | Market Cap | P/E Ratio | PEG Ratio | EPS Growth (1Y) |
|---|---|---|---|---|
| $22B | 11.6Lowest | 0.38Best | +18% | |
| $2B | 18.3 | - | +113%Best | |
| $4B | 42.4 | 6.72 | +72% | |
| $2B | 45.3 | - | +43% | |
| $181B | 15.7 | 0.90 | -2% | |
| $10B | 35.0 | - | -50% |
Lower P/E can signal a discount or weaker growth expectations; PEG adds growth context.
SPWR Historical P/E Data (2025–2025)
Quarterly P/E ratios calculated from closing price and TTM EPS
| Quarter | Period End | Price | TTM EPS | P/E Ratio | vs Avg |
|---|---|---|---|---|---|
| FY2025 Q3 | Sep 28 2025 | $1.77 | $0.03 | 56.7x | +0% |
Average P/E for displayed period: 56.7x
SPWR Chart Terminal
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Intrinsic Valuation
DCF models, multiple analysis, and analyst estimates.
Historical Returns
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Peer Comparison
Compare growth, multiples, and margins vs sector.
SPWR — Frequently Asked Questions
Quick answers to the most common questions about buying SPWR stock.
What is SPWR's P/E ratio?
SunPower Inc. (SPWR) trailing twelve-month P/E ratio is -39.8x, based on TTM diluted EPS of $-0.01. The 5-year average P/E is 56.7x and the historical range spans 56.7x to 56.7x.
Is SPWR stock overvalued or undervalued?
SPWR trades at -39.8x P/E, below its 5-year average of 56.7x. At the 0th percentile of its historical range (56.7x–56.7x), the stock is priced at a discount to its own history.
Is SPWR stock expensive?
No, SPWR is not expensive on a historical basis. The current P/E of -39.8x is below the 5-year average of 56.7x and sits at the 0th percentile of its valuation range.
What is SPWR's historical P/E range?
Over the past 5 years, SPWR's P/E ratio has ranged from 56.7x to 56.7x, with a median of 56.7x and an average of 56.7x. The current P/E of -39.8x places the stock at the 0th percentile of this range. Full historical data spans 2025–2025.
How does SPWR's P/E compare to the S&P 500?
SPWR trades at -39.8x P/E versus the S&P 500 median of 21.8x. The 283% discount to the market suggests lower growth expectations or perceived higher risk.
How does SPWR's valuation compare to Energy peers?
SunPower Inc. P/E of -39.8x compares to the Energy sector median of 12.6x. 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 SPWR's PEG ratio?
SPWR PEG ratio is N/A, based on a P/E of -39.8x and EPS growth of 44.3%. PEG normalises P/E by growth and helps compare stocks with different earnings trajectories.
What is SPWR's earnings yield?
SPWR earnings yield is N/A, the inverse of its -39.8x 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.