TransAltaSTU:TZ1 55 Days Inventory is 50.77 as of Mar. 2026, which is 26% below its 10-year median of 68.24. GuruFocus rates STU:TZ1 with a GF Score™ of 55/100 and a GF Value™ of €6.22 (Significantly Overvalued). The stock has 6 warning signs investors should review. Among 332 Utilities - Independent Power Producers companies, TransAlta ranks worse than 66.87% on this metric.
Days Inventory is also known as Days Sales of Inventory (DSI). TransAlta's Average Total Inventories for the
three
months ended in Mar. 2026 was €72 Mil. TransAlta's Cost of Goods Sold for the
three
months ended in Mar. 2026 was €129 Mil.
Hence, TransAlta's Days Inventory for the
three
months ended in Mar. 2026 was 50.77.
The historical rank and industry rank for TransAlta's Days Inventory or its related term are showing as below:
STU:TZ1'
s Days Inventory Range Over the Past 10 Years
Min: 44.09 Med: 68.24 Max: 92.19
Current: 53.8
During the past 13 years, TransAlta's highest Days Inventory was 92.19. The lowest was 44.09. And the median was 68.24.
TransAlta's Days Inventory
increased
from Mar. 2025 (38.12) to Mar. 2026 (50.77).
It might indicate that TransAlta's sales slowed down.
Inventory Turnover measures how fast the company turns over its inventory within a year.
TransAlta's Inventory Turnover for the
three
months ended in Mar. 2026 was 1.80.
Inventory-to-Revenue determines the ability of a company to manage their inventory levels. It measures the percentage of Inventories the company currently has on hand to support the current amount of Revenue.
TransAlta's Inventory-to-Revenue for the
three
months ended in Mar. 2026 was 0.20.
TransAlta (STU:TZ1) Days Inventory Explanation
Days Inventory indicates the liquidity of the inventory. Generally, a lower Days Inventory is preferred as it indicates a shorter duration to clear off the inventory. An increase of the ratio may indicate the company's sales slowed. Similar ratios related to Days Inventory are:
1. Inventory Turnover measures how fast the company turns over its inventory within a year.
TransAlta's Inventory Turnover for the
three
months ended in Mar. 2026 is calculated as
2. Inventory-to-Revenue determines the ability of a company to manage their inventory levels. It measures the percentage of Inventories the company currently has on hand to support the current amount of Revenue.
TransAlta's Inventory to Revenue for the
three
months ended in Mar. 2026 is calculated as
* 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.
Be Aware
A lot of business are seasonable. It makes more sense to compare Days Inventory from the same period in the previous year instead of from the previous quarter.
TransAlta Days Inventory Related Terms
TransAlta Days Inventory Historical Data
* Premium members only.
The historical data trend for TransAlta's Days Inventory 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.
STU:TZ1 vs CEG, VST, NRG: Days Inventory Comparison
For the Utilities - Independent Power Producers subindustry, TransAlta's Days Inventory, along with its competitors' market caps and Days Inventory 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.
TransAlta Days Inventory vs Utilities - Independent Power Producers Industry
For the Utilities - Independent Power Producers industry and Utilities sector, TransAlta's Days Inventory distribution charts can be found below:
* The bar in red indicates where TransAlta's Days Inventory falls into.
* 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.
TransAlta (STU:TZ1) has a Days Inventory of 50.77 as of Mar. 2026. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on TransAlta and its competitors. This is 26% below median its historical median of 68.24. Over the past decade, TransAlta's Days Inventory has ranged from 44.09 to 92.19. According to the industry distribution chart, TransAlta ranks #222 out of 332 companies in the Utilities - Independent Power Producers industry, placing it in the top 66.9%.
Is TransAlta's Days Inventory too high?
TransAlta's current Days Inventory of 50.77 is 26% below median its 10-year median of 68.24. Over the past 10 years, this metric has ranged from a low of 44.09 to a high of 92.19. The Utilities - Independent Power Producers industry median Days Inventory is 28.32. TransAlta's value of 50.77 is 79.3% above this industry median. Based on the distribution chart, TransAlta ranks #222 out of 332 companies in the Utilities - Independent Power Producers industry, which is below the industry midpoint. Overall, TransAlta has a GF Score™ of 55/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does TransAlta's Days Inventory compare to CEG and VST?
According to the Utilities - Independent Power Producers industry distribution chart, TransAlta ranks #222 out of 332 companies for Days Inventory. This places TransAlta in the lower half of its industry. The industry median Days Inventory is 28.32. TransAlta's value of 50.77 is 79.3% above this benchmark. Historically, TransAlta's own Days Inventory has ranged from 44.09 to 92.19 over the past decade. While the company's 10-year median is 68.24 vs. the industry median of 28.32, TransAlta has consistently been above the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Days Inventory for an Utilities - Independent Power Producers company?
The median Days Inventory among Utilities - Independent Power Producers companies is 28.32, based on 332 companies in the industry. Companies in the top quartile (top 25%) have a Days Inventory significantly above this median, while those in the bottom quartile fall well below. However, Days Inventory should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. TransAlta's current Days Inventory of 50.77 is 79.3% above the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Days Inventory mean?
A high Days Inventory can signal that a stock is expensive relative to its fundamentals. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on TransAlta and its competitors. For the Utilities - Independent Power Producers industry, the median Days Inventory is 28.32 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. TransAlta's current Days Inventory is 50.77, which is 26% below median its own 10-year median of 68.24. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is TransAlta stock overvalued right now?
Based on GuruFocus' analysis, TransAlta (STU:TZ1) is currently considered Significantly Overvalued. The stock's GF Value™ is €6.22, compared to a current price of €12.40 — trading 99.4% above its estimated fair value. The current Days Inventory is 50.77, which is 26% below median its 10-year median of 68.24 and 79.3% above the Utilities - Independent Power Producers industry median of 28.32. TransAlta's overall GF Score™ is 55/100 with 6 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Days Inventory calculated?
Days Inventory is calculated from a company's financial statements. For TransAlta (STU:TZ1), the current Days Inventory is 50.77 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 TransAlta (STU:TZ1) Overvalued in 2026?
Based on GuruFocus' analysis, TransAlta stock appears to be overvalued.
The current stock price of €12.40 is trading 99.4% above its estimated GF Value™ of €6.22.
GuruFocus considers TransAlta to be Significantly Overvalued.
Key valuation signals for STU:TZ1:
Days Inventory: 50.77 (26% below median its 10-year median of 68.24)
GF Value™: €6.22 vs. price of €12.40 (99.4% above fair value)
Industry Position: 79.3% above the Utilities - Independent Power Producers median (#222 of 332)
No single metric tells the full story. See the STU:TZ1 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
TransAlta Corp is an independent power producer based in Alberta, Canada. The company operates a diverse electrical power generation assets in Canada, the United States, and Western Australia. The company has reportable segments namely, Hydro, Wind & Solar, Gas, Energy Transition segment and Corporate Segment. The company generates the majority of its revenue from the gas segment.
55GF Score
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