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Westport Fuel SystemsWPRT +1.03%32 3-Year Book Growth Rate is -30.40% as of Jun. 2026. GuruFocus rates WPRT with a GF Score™ of 32/100 and a GF Value™ of $0.74 (Significantly Overvalued). The stock has 7 warning signs investors should review. Among 1,281 Vehicles & Parts companies, Westport Fuel Systems ranks worse than 96.25% on this metric.
During the past 12 months, Westport Fuel Systems's average Book Value per Share Growth Rate was -55.00% per year.
During the past 3 years, the average Book Value per Share Growth Rate was -30.40% per year.
During the past 5 years, the average Book Value per Share Growth Rate was -11.40% per year.
During the past 10 years, the average Book Value per Share Growth Rate was -2.40% per year.
Please click Growth Rate Calculation Example (GuruFocus) to see how GuruFocus calculates Wal-Mart Stores Inc (WMT)'s revenue growth rate. You can apply the same method to get the average Book Value per Share growth rate.
During the past 13 years, the highest 3-Year average Book Value per Share Growth Rate of Westport Fuel Systems was 242.70% per year. The lowest was -48.00% per year. And the median was -5.85% per year.
Westport Fuel Systems (NAS:WPRT) 3-Year Book Growth Rate Explanation
Book Value per Share is the ratio of equity available to common shareholders divided by the shares outstanding. Book value per share effectively indicates a firm's net asset value on a per-share basis. It can be used by investors to gauge whether a stock price is undervalued by comparing it to the firm's market value per share. Theoretically, it is what the shareholders will receive if the company is liquidated.
Westport Fuel Systems 3-Year Book Growth Rate Related Terms
WPRT vs ORLY, AZO, GPC: 3-Year Book Growth Rate Comparison
For the Auto Parts subindustry, Westport Fuel Systems's 3-Year Book Growth Rate, along with its competitors' market caps and 3-Year Book Growth Rate data, can be viewed below:
* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.
Westport Fuel Systems 3-Year Book Growth Rate vs Vehicles & Parts Industry
For the Vehicles & Parts industry and Consumer Cyclical sector, Westport Fuel Systems's 3-Year Book Growth Rate distribution charts can be found below:
* The bar in red indicates where Westport Fuel Systems's 3-Year Book Growth Rate falls into.
Westport Fuel Systems 3-Year Book Growth Rate Calculation
This is the 3-year average growth rate of Book Value per Share. The growth rate is calculated using exponential compounding based on the latest four year annual data.
Please click Growth Rate Calculation Example (GuruFocus) to see how GuruFocus calculates Wal-Mart Stores Inc (WMT)'s revenue growth rate. You can apply the same method to get the average Book Value per Share growth rate.
What does a 3-Year Book Growth Rate of -30.40% mean?
Westport Fuel Systems (WPRT) has a 3-Year Book Growth Rate of -30.40% as of Jun. 2026. 3-Year Book Growth Rate is the 3-year average growth rate of Book Value per Share. View historical data for Westport Fuel Systems and its competitors. According to the industry distribution chart, Westport Fuel Systems ranks #1233 out of 1281 companies in the Vehicles & Parts industry, placing it in the top 96.3%.
Is Westport Fuel Systems' 3-Year Book Growth Rate too high?
Westport Fuel Systems' current 3-Year Book Growth Rate is -30.40%. Based on the distribution chart, Westport Fuel Systems ranks #1233 out of 1281 companies in the Vehicles & Parts industry, which is in the bottom quartile relative to peers. Overall, Westport Fuel Systems has a GF Score™ of 32/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Westport Fuel Systems' 3-Year Book Growth Rate compare to ORLY and AZO?
According to the Vehicles & Parts industry distribution chart, Westport Fuel Systems ranks #1233 out of 1281 companies for 3-Year Book Growth Rate. This places Westport Fuel Systems in the lower half of its industry. The industry median 3-Year Book Growth Rate is 6.50. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good 3-Year Book Growth Rate for a Vehicles & Parts company?
The median 3-Year Book Growth Rate among Vehicles & Parts companies is 6.50, based on 1,281 companies in the industry. Companies in the top quartile (top 25%) have a 3-Year Book Growth Rate significantly above this median, while those in the bottom quartile fall well below. However, 3-Year Book Growth Rate should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high 3-Year Book Growth Rate mean?
A high 3-Year Book Growth Rate can signal that a stock is expensive relative to its fundamentals. 3-Year Book Growth Rate is the 3-year average growth rate of Book Value per Share. View historical data for Westport Fuel Systems and its competitors. For the Vehicles & Parts industry, the median 3-Year Book Growth Rate is 6.50 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Westport Fuel Systems's current 3-Year Book Growth Rate is -30.40%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Westport Fuel Systems stock overvalued right now?
Based on GuruFocus' analysis, Westport Fuel Systems (WPRT) is currently considered Significantly Overvalued. The stock's GF Value™ is $0.74, compared to a current price of $1.98 — trading 167.6% above its estimated fair value. The current 3-Year Book Growth Rate is -30.40%. Westport Fuel Systems' overall GF Score™ is 32/100 with 7 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is 3-Year Book Growth Rate calculated?
3-Year Book Growth Rate is calculated from a company's financial statements. For Westport Fuel Systems (WPRT), the current 3-Year Book Growth Rate is -30.40% as of Jun. 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.
Is Westport Fuel Systems (WPRT) Overvalued in 2026?
Based on GuruFocus' analysis, Westport Fuel Systems stock appears to be overvalued.
The current stock price of $1.98 is trading 167.6% above its estimated GF Value™ of $0.74.
GuruFocus considers Westport Fuel Systems to be Significantly Overvalued.
Key valuation signals for WPRT:
3-Year Book Growth Rate: -30.40%
GF Value™: $0.74 vs. price of $1.98 (167.6% above fair value)
No single metric tells the full story. See the WPRT stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Westport Fuel Systems Inc is an organization engaged in the engineering, manufacturing, and supply of alternative fuel systems and components for transportation applications. It has three reportable segments: High-Pressure Controls, Heavy-Duty OEM, and Cespira. It derives maximum revenue from Heavy-Duty OEM segment. Heavy-Duty OEM segment's products include HPDI related fuel system solutions and components. Geographically, the company operates in Europe, America and Asia, of which it generates maximum revenue from Europe. It also develops and supplies advanced LPG, CNG, LNG and H2 systems and components for OEM (original equipment manufacturer) D-OEM (delayed oem) and After Market (retrofit market) world-wide.
32GF Score
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