Seiyu kogyo Co (NGO:9170) Days Inventory: 3.29 (As of Mar. 2026) — 71% Above Median

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NGO:9170 Seiyu kogyo Co Ltd NGO:9170
19 GF Score
Price 円1,625.00
GF Value 円869.30
Valuation Significantly Overvalued
! 3 Warning Signs
View Full Analysis

What is Seiyu kogyo Co Days Inventory?

Seiyu kogyo Co NGO:9170 -1.52% 19 Days Inventory is 3.29 as of Mar. 2026, which is 71% above its 10-year median of 1.92. GuruFocus rates NGO:9170 with a GF Score™ of 19/100 and a GF Value™ of 円869.30 (Significantly Overvalued). The stock has 3 warning signs investors should review. Among 1,488 Construction companies, Seiyu kogyo Co ranks better than 88.91% on this metric.

Days Inventory is also known as Days Sales of Inventory (DSI). Seiyu kogyo Co's Average Total Inventories for the six months ended in Mar. 2026 was 円132 Mil. Seiyu kogyo Co's Cost of Goods Sold for the six months ended in Mar. 2026 was 円7,346 Mil. Hence, Seiyu kogyo Co's Days Inventory for the six months ended in Mar. 2026 was 3.29.

The historical rank and industry rank for Seiyu kogyo Co's Days Inventory or its related term are showing as below:

NGO:9170' s Days Inventory Range Over the Past 10 Years
Min: 1.08   Med: 1.92   Max: 3.44
Current: 3.44

During the past 5 years, Seiyu kogyo Co's highest Days Inventory was 3.44. The lowest was 1.08. And the median was 1.92.

NGO:9170's Days Inventory is ranked better than
88.91% of 1488 companies
in the Construction industry
Industry Median: 49.76 vs NGO:9170: 3.44

Seiyu kogyo Co's Days Inventory increased from Mar. 2025 (3.09) to Mar. 2026 (3.29). It might indicate that Seiyu kogyo Co's sales slowed down.

Inventory Turnover measures how fast the company turns over its inventory within a year. Seiyu kogyo Co's Inventory Turnover for the six months ended in Mar. 2026 was 55.51.

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. Seiyu kogyo Co's Inventory-to-Revenue for the six months ended in Mar. 2026 was 0.01.


Seiyu kogyo Co  (NGO:9170) 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.

Seiyu kogyo Co's Inventory Turnover for the six 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.

Seiyu kogyo Co's Inventory to Revenue for the six 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.


Seiyu kogyo Co Days Inventory Related Terms


Seiyu kogyo Co Days Inventory Historical Data

* Premium members only.

The historical data trend for Seiyu kogyo Co'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.

Seiyu kogyo Co Days Inventory Chart

Seiyu kogyo Co Annual Data
Trend Sep21 Sep22 Sep23 Sep24 Sep25
Days Inventory
1.08 1.44 1.92 2.60 3.02

Seiyu kogyo Co Semi-Annual Data
Sep21 Sep22 Sep23 Mar24 Sep24 Mar25 Sep25 Mar26
Days Inventory Get a 7-Day Free Trial 2.43 2.84 3.09 3.29 3.29

NGO:9170 vs PWR, FIX, EME: Days Inventory Comparison

For the Engineering & Construction subindustry, Seiyu kogyo Co'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.


Seiyu kogyo Co Days Inventory vs Construction Industry

For the Construction industry and Industrials sector, Seiyu kogyo Co's Days Inventory distribution charts can be found below:

* The bar in red indicates where Seiyu kogyo Co's Days Inventory falls into.


NGO:9170
19GF Score
Seiyu kogyo Co Ltd NGO:9170
Days Inventory is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Seiyu kogyo Co Days Inventory Calculation

Days Inventory indicates the number of days of goods in sales that a company has in the inventory.

Seiyu kogyo Co's Days Inventory for the fiscal year that ended in Sep. 2025 is calculated as

Days Inventory (A: Sep. 2025 )
=Average Total Inventories / Cost of Goods Sold*Days in Period
=( (Total Inventories (A: Sep. 2024 ) + Total Inventories (A: Sep. 2025 )) / count ) / Cost of Goods Sold (A: Sep. 2025 )*Days in Period
=( (102.288 + 104.497) / 2 ) / 12491.069*365
=103.3925 / 12491.069*365
=3.02

Seiyu kogyo Co's Days Inventory for the quarter that ended in Mar. 2026 is calculated as:

Days Inventory (Q: Mar. 2026 )
=Average Total Inventories / Cost of Goods Sold*Days in Period
=( (Total Inventories (Q: Sep. 2025 ) + Total Inventories (Q: Mar. 2026 )) / count ) / Cost of Goods Sold (Q: Mar. 2026 )*Days in Period
=( (104.497 + 160.194) / 2 ) / 7346.273*365 / 2
=132.3455 / 7346.273*365 / 2
=3.29

* 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.

Frequently Asked Questions Learn more about Days Inventory →
What does a Days Inventory of 3.29 mean?
Seiyu kogyo Co (NGO:9170) has a Days Inventory of 3.29 as of Mar. 2026. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on Seiyu kogyo Co and its competitors. This is 71% above median its historical median of 1.92. Over the past decade, Seiyu kogyo Co's Days Inventory has ranged from 1.08 to 3.44. According to the industry distribution chart, Seiyu kogyo Co ranks #165 out of 1488 companies in the Construction industry, placing it in the top 11.1%.
Is Seiyu kogyo Co's Days Inventory too high?
Seiyu kogyo Co's current Days Inventory of 3.29 is 71% above median its 10-year median of 1.92. Over the past 10 years, this metric has ranged from a low of 1.08 to a high of 3.44. The Construction industry median Days Inventory is 49.76. Seiyu kogyo Co's value of 3.29 is 93.4% below this industry median. Based on the distribution chart, Seiyu kogyo Co ranks #165 out of 1488 companies in the Construction industry, which is in the top quartile — a strong position relative to peers. Overall, Seiyu kogyo Co has a GF Score™ of 19/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Seiyu kogyo Co's Days Inventory compare to PWR and FIX?
According to the Construction industry distribution chart, Seiyu kogyo Co ranks #165 out of 1488 companies for Days Inventory. This places Seiyu kogyo Co in the top 11% of its industry — outperforming the majority of peers. The industry median Days Inventory is 49.76. Seiyu kogyo Co's value of 3.29 is 93.4% below this benchmark. Historically, Seiyu kogyo Co's own Days Inventory has ranged from 1.08 to 3.44 over the past decade. While the company's 10-year median is 1.92 vs. the industry median of 49.76, Seiyu kogyo Co has consistently been below 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 a Construction company?
The median Days Inventory among Construction companies is 49.76, based on 1,488 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. Seiyu kogyo Co's current Days Inventory of 3.29 is 93.4% below 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 Seiyu kogyo Co and its competitors. For the Construction industry, the median Days Inventory is 49.76 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Seiyu kogyo Co's current Days Inventory is 3.29, which is 71% above median its own 10-year median of 1.92. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Seiyu kogyo Co stock overvalued right now?
Based on GuruFocus' analysis, Seiyu kogyo Co (NGO:9170) is currently considered Significantly Overvalued. The stock's GF Value™ is 円869.30, compared to a current price of 円1,625.00 — trading 86.9% above its estimated fair value. The current Days Inventory is 3.29, which is 71% above median its 10-year median of 1.92 and 93.4% below the Construction industry median of 49.76. Seiyu kogyo Co's overall GF Score™ is 19/100 with 3 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 Seiyu kogyo Co (NGO:9170), the current Days Inventory is 3.29 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 Seiyu kogyo Co (NGO:9170) Overvalued in 2026?

Based on GuruFocus' analysis, Seiyu kogyo Co stock appears to be overvalued. The current stock price of 円1,625.00 is trading 86.9% above its estimated GF Value™ of 円869.30. GuruFocus considers Seiyu kogyo Co to be Significantly Overvalued.

Key valuation signals for NGO:9170:

  • Days Inventory: 3.29 (71% above median its 10-year median of 1.92)
  • GF Value™: 円869.30 vs. price of 円1,625.00 (86.9% above fair value)
  • GF Score™: 19/100 with 3 warning signs
  • Industry Position: 93.4% below the Construction median (#165 of 1488)

No single metric tells the full story. See the NGO:9170 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Seiyu kogyo Co Business Description

Address 1141-1 Kusabana, Akiruno City, Tokyo, JPN
Seiyu kogyo Co Ltd is engaged in the business of construction work, Industrial waste treatment, Contaminated soil treatment, Transportation business, and Recycled construction materials production and sales business.
19GF Score

Get the complete analysis for NGO:9170

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

円1,625.00
Price
円869.30
GF Value