Westport Fuel Systems (TSX:WPRT) Cyclically Adjusted Book per Share: C$13.52 (As of Mar. 2026)


TSX:WPRT Westport Fuel Systems Inc TSX:WPRT
43 GF Score
Price C$3.17
GF Value C$1.54
Valuation Significantly Overvalued
! 9 Warning Signs
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What is Westport Fuel Systems Cyclically Adjusted Book per Share?

Westport Fuel Systems TSX:WPRT -4.37% 43 Cyclically Adjusted Book per Share is C$13.52 as of Mar. 2026. GuruFocus rates TSX:WPRT with a GF Score™ of 43/100 and a GF Value™ of C$1.54 (Significantly Overvalued). The stock has 9 warning signs investors should review.

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted Book per Share and the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years.

Westport Fuel Systems's adjusted book value per share for the three months ended in Mar. 2026 was C$4.960. Add all the adjusted book value per share for the past 10 years together and divide the count will get our Cyclically Adjusted Book per Share, which is C$13.52 for the trailing ten years ended in Mar. 2026.

During the past 12 months, Westport Fuel Systems's average Cyclically Adjusted Book Growth Rate was -8.40% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was -17.10% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was -16.10% per year. During the past 10 years, the average Cyclically Adjusted Book Growth Rate was -7.50% 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 Cyclically Adjusted Book Growth Rate using Cyclically Adjusted Book per Share data.

During the past 13 years, the highest 3-Year average Cyclically Adjusted Book Growth Rate of Westport Fuel Systems was 8.60% per year. The lowest was -19.20% per year. And the median was -1.10% per year.

As of today (2026-07-02), Westport Fuel Systems's current stock price is C$3.17. Westport Fuel Systems's Cyclically Adjusted Book per Share for the quarter that ended in Mar. 2026 was C$13.52. Westport Fuel Systems's Cyclically Adjusted PB Ratio of today is 0.23.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Westport Fuel Systems was 5.01. The lowest was 0.16. And the median was 0.60.


Westport Fuel Systems  (TSX:WPRT) Cyclically Adjusted Book per Share Explanation

If a company grows much fast than inflation, Cyclically Adjusted Book per Share may underestimate the company's equity. Cyclically Adjusted PB Ratio can seem to be too high even the actual PB Ratio is low.

For the Cyclically Adjusted PB Ratio, the book value of the past 10 years are inflation-adjusted and averaged. The result is used for P/B calculation. Since it looks at the average over the last 10 years, the Cyclically Adjusted PB Ratio is also called CAPB Ratio.

The Shiller PE Ratio was first used by professor Robert Shiller. He uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings per share of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted book value per share of a company over the past 10 years.

Westport Fuel Systems's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=3.17/13.52
=0.23

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of Westport Fuel Systems was 5.01. The lowest was 0.16. And the median was 0.60.


Be Aware

Cyclically Adjusted PB Ratio works better for cyclical companies. It gives you a better idea on the company's real book value.


Westport Fuel Systems Cyclically Adjusted Book per Share Related Terms


Westport Fuel Systems Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for Westport Fuel Systems's Cyclically Adjusted Book per Share can be seen below:

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

Westport Fuel Systems Cyclically Adjusted Book per Share Chart

Westport Fuel Systems Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Cyclically Adjusted Book per Share
Get a 7-Day Free Trial Premium Member Only Premium Member Only 28.76 23.75 19.11 15.17 13.53

Westport Fuel Systems Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
Cyclically Adjusted Book per Share Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 14.76 14.26 13.88 13.53 13.52

TSX:WPRT vs ORLY, AZO, GPC: Cyclically Adjusted Book per Share Comparison

For the Auto Parts subindustry, Westport Fuel Systems's Cyclically Adjusted PB Ratio, along with its competitors' market caps and Cyclically Adjusted PB Ratio 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 Cyclically Adjusted PB Ratio vs Vehicles & Parts Industry

For the Vehicles & Parts industry and Consumer Cyclical sector, Westport Fuel Systems's Cyclically Adjusted PB Ratio distribution charts can be found below:

* The bar in red indicates where Westport Fuel Systems's Cyclically Adjusted PB Ratio falls into.


TSX:WPRT
43GF Score
Westport Fuel Systems Inc TSX:WPRT
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Westport Fuel Systems Cyclically Adjusted Book per Share Calculation

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted Book per Share and the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years.

What is Cyclically Adjusted Book per Share? How do we calculate Cyclically Adjusted Book per Share?

Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years. Let's use an example to explain.

If we want to calculate the Cyclically Adjusted Book per Share of Wal-Mart (WMT) for Dec. 31, 2010, we need to have the inflation data and the book value per share from 2001 through 2010.

We adjusted the 2001 book value per share data with the total inflation from 2001 through 2010 to the equivalent book value in 2010. If the total inflation from 2001 to 2010 is 40%, and Wal-Mart's book value is $1 a share in 2001, then the 2001's equivalent book value in 2010 is $1.4 a share. If Wal-Mart's book value is $1 again in 2002, and the total inflation from 2002 through 2010 is 35%, then the equivalent 2002 book value in 2010 is $1.35. So on and so forth, you get the equivalent book value per share of past 10 years. Then you add them together and divided the sum by the count to get Cyclically Adjusted Book per Share.

Please note that we use the CPI data of the country/region where the company is headquartered. If the CPI data for that country/region is not available, then we will use the CPI data of the United States as default.

For example, Westport Fuel Systems's adjusted Book Value per Share data for the three months ended in Mar. 2026 was:

Adj_Book= Book Value per Share /CPI of Mar. 2026 (Change)*Current CPI (Mar. 2026)
=4.96/132.2623*132.2623
=4.960

Current CPI (Mar. 2026) = 132.2623.

Westport Fuel Systems Quarterly Data

Book Value per Share CPI Adj_Book
201606 18.838 102.002 24.427
201609 14.800 101.765 19.235
201612 10.350 101.449 13.494
201703 8.994 102.634 11.590
201706 12.819 103.029 16.456
201709 12.737 103.345 16.301
201712 11.480 103.345 14.692
201803 10.450 105.004 13.163
201806 9.918 105.557 12.427
201809 9.725 105.636 12.176
201812 9.134 105.399 11.462
201903 8.763 106.979 10.834
201906 8.606 107.690 10.570
201909 8.670 107.611 10.656
201912 8.626 107.769 10.586
202003 7.655 107.927 9.381
202006 7.707 108.401 9.403
202009 7.800 108.164 9.538
202012 9.252 108.559 11.272
202103 9.708 110.298 11.641
202106 17.245 111.720 20.416
202109 17.186 112.905 20.133
202112 17.718 113.774 20.597
202203 18.066 117.646 20.311
202206 17.136 120.806 18.761
202209 16.542 120.648 18.134
202212 16.176 120.964 17.687
202303 15.613 122.702 16.829
202306 14.455 124.203 15.393
202309 13.486 125.230 14.243
202312 12.533 125.072 13.253
202403 11.530 126.258 12.078
202406 12.033 127.522 12.480
202409 11.713 127.285 12.171
202412 11.295 127.364 11.729
202503 11.400 129.181 11.672
202506 8.578 129.892 8.735
202509 6.396 130.287 6.493
202512 5.463 130.366 5.542
202603 4.960 132.262 4.960

Add all the adjusted book value per share together and divide the count will get our Cyclically Adjusted Book per Share.

What does a Cyclically Adjusted Book per Share of C$13.52 mean?
Westport Fuel Systems (TSX:WPRT) has a Cyclically Adjusted Book per Share of C$13.52 as of Mar. 2026. Cyclically adjusted book value per share represents the company's inflation-adjusted book value per share over a 10-year period. View historical data on Westport Fuel Systems and its competitors.
Is Westport Fuel Systems' Cyclically Adjusted Book per Share too high?
Westport Fuel Systems' current Cyclically Adjusted Book per Share is C$13.52. Overall, Westport Fuel Systems has a GF Score™ of 43/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Westport Fuel Systems' Cyclically Adjusted Book per Share compare to ORLY and AZO?
Westport Fuel Systems' Cyclically Adjusted Book per Share of C$13.52 can be compared against companies in the Vehicles & Parts industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Cyclically Adjusted Book per Share for a Vehicles & Parts company?
A good Cyclically Adjusted Book per Share depends on the Vehicles & Parts industry context. However, Cyclically Adjusted Book per Share 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 Cyclically Adjusted Book per Share mean?
A high Cyclically Adjusted Book per Share can signal that a stock is expensive relative to its fundamentals. Cyclically adjusted book value per share represents the company's inflation-adjusted book value per share over a 10-year period. View historical data on Westport Fuel Systems and its competitors. Westport Fuel Systems's current Cyclically Adjusted Book per Share is C$13.52. 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 (TSX:WPRT) is currently considered Significantly Overvalued. The stock's GF Value™ is C$1.54, compared to a current price of C$3.17 — trading 105.8% above its estimated fair value. The current Cyclically Adjusted Book per Share is C$13.52. Westport Fuel Systems' overall GF Score™ is 43/100 with 9 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Cyclically Adjusted Book per Share calculated?
Cyclically Adjusted Book per Share is calculated from a company's financial statements. For Westport Fuel Systems (TSX:WPRT), the current Cyclically Adjusted Book per Share is C$13.52 as of Mar. 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 (TSX:WPRT) Overvalued in 2026?

Based on GuruFocus' analysis, Westport Fuel Systems stock appears to be overvalued. The current stock price of C$3.17 is trading 105.8% above its estimated GF Value™ of C$1.54. GuruFocus considers Westport Fuel Systems to be Significantly Overvalued.

Key valuation signals for TSX:WPRT:

  • Cyclically Adjusted Book per Share: C$13.52
  • GF Value™: C$1.54 vs. price of C$3.17 (105.8% above fair value)
  • GF Score™: 43/100 with 9 warning signs

No single metric tells the full story. See the TSX:WPRT stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Westport Fuel Systems Business Description

Other Exchanges WPRT:USAWPI:Germany
Address 1691 West 75th Avenue, Suite 101, Vancouver, BC, CAN, V6P 6P2
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.
43GF Score

Get the complete analysis for TSX:WPRT

Cyclically Adjusted Book per Share is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

C$3.17
Price
C$1.54
GF Value