AltaGas (TSX:ALA.PR.G.PFD) PB Ratio: (As of Aug. 04, 2026)

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
Director of Data and Quant Analytics at GuruFocus
Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Reviewed by: Charlie Tian Charlie Tian
Charlie Tian
Charlie Tian
Founder & CEO of GuruFocus
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.

TSX:ALA.PR.G.PFD AltaGas Ltd TSX:ALA.PR.G.PFD
73 GF Score
Price C$26.40
! 13 Warning Signs
View Full Analysis

What is AltaGas PB Ratio?

The PB Ratio, or Price-to-Book ratio, or Price/Book, is a financial ratio used to compare a company's market price to its Book Value per Share. As of today (2026-08-04), AltaGas's share price is C$26.40. AltaGas's Book Value per Share for the quarter that ended in Jun. 2026 was C$0.00. Hence, AltaGas's PB Ratio of today is .

Warning Sign:

AltaGas Ltd stock PB Ratio (=1.86) is close to 10-year high of 1.94.

The historical rank and industry rank for AltaGas's PB Ratio or its related term are showing as below:

TSX:ALA.PR.G.PFD' s PB Ratio Range Over the Past 10 Years
Min: 0.48   Med: 1.21   Max: 1.94
Current: 1.84

During the past 13 years, AltaGas's highest PB Ratio was 1.94. The lowest was 0.48. And the median was 1.21.

TSX:ALA.PR.G.PFD's PB Ratio is ranked worse than
62.35% of 927 companies
in the Oil & Gas industry
Industry Median: 1.43 vs TSX:ALA.PR.G.PFD: 1.84

During the past 12 months, AltaGas's average Book Value Per Share Growth Rate was 8.80% per year. During the past 3 years, the average Book Value Per Share Growth Rate was 4.70% per year. During the past 5 years, the average Book Value Per Share Growth Rate was 6.70% per year. During the past 10 years, the average Book Value Per Share Growth Rate was 3.20% per year.

During the past 13 years, the highest 3-Year average Book Value Per Share Growth Rate of AltaGas was 25.90% per year. The lowest was -2.90% per year. And the median was 5.70% per year.

Back to Basics: PB Ratio


AltaGas  (TSX:ALA.PR.G.PFD) PB Ratio Explanation

Unlike valuation ratios relative to the earning power such as PE Ratio, PE Ratio without NRI, PS Ratio, Price-to-Operating-Cash-Flow , or Price-to-Free-Cash-Flow, the PB Ratio measures the valuation of the stock relative to the underlying asset of the company.

The PB Ratio works the best for the businesses that earn most of their profit from their assets, e.g. banks and insurance companies.


Be Aware

Some businesses have very light assets, such as software companies or insurance agencies. The PB Ratio does not work well for these companies. Some companies even have negative equity, so the PB Ratio cannot be applied to them.


AltaGas PB Ratio Related Terms


AltaGas PB Ratio Historical Data

* Premium members only.

The historical data trend for AltaGas's PB Ratio 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.

AltaGas PB Ratio Chart

AltaGas Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
PB Ratio
Get a 7-Day Free Trial Premium Member Only Premium Member Only 0.00 0.00 0.00 0.00 0.00

AltaGas Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
PB Ratio 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 0.00 0.00 0.00 0.00 0.00

TSX:ALA.PR.G.PFD vs WMB, EPD, KMI: PB Ratio Comparison

For the Oil & Gas Midstream subindustry, AltaGas's PB Ratio, along with its competitors' market caps and 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.


AltaGas PB Ratio vs Oil & Gas Industry

For the Oil & Gas industry and Energy sector, AltaGas's PB Ratio distribution charts can be found below:

* The bar in red indicates where AltaGas's PB Ratio falls into.


TSX:ALA.PR.G.PFD
73GF Score
AltaGas Ltd TSX:ALA.PR.G.PFD
PB Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

AltaGas PB Ratio Calculation

The PB Ratio, or Price-to-Book ratio, or Price/Book, is a financial ratio used to compare a company's market price to its Book Value per Share. It is a ratio widely used to value stocks.

AltaGas's PB Ratio for today is calculated as follows:

PB Ratio=Share Price/Book Value per Share (Q: Jun. 2026)
=26.40/0
=

* 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.

It can also be calculated from the numbers for the whole company:

A closely related ratio is called Price-to-Tangible-Book. The difference between Price-to-Tangible-Book and PB Ratio is that book value other than intangibles are used in the calculation.


AltaGas Business Description

Industry EnergyOil & Gas
Address 707 - 5th Street SW, Suite 1300, Calgary, AB, CAN, T2P 1V8
AltaGas Ltd is a North American energy infrastructure company that connects customers and markets to energy sources. AltaGas has three reporting segments: Utilities, Midstream, and Corporate/Other. The majority of its revenue is generated from the Midstream segment, which operates a North American energy platform that moves natural gas and LPGs from the wellhead to markets. It exports propane and butane to Asia through its LPG terminals, and runs natural gas gathering, processing, fractionation, liquids handling, and storage infrastructure. The segment also includes its natural gas and natural gas liquids (NGLs) marketing business, domestic logistics, trucking and rail terminals, and liquid and natural gas storage capability. Geographically, the firm derives its key revenue from the U.S.
73GF Score

Get the complete analysis for TSX:ALA.PR.G.PFD

PB Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

C$26.40
Price