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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.
JET CoTSE:6228 -5.93%69 Days Inventory is 506.26 as of Dec. 2025, which is 72% above its 10-year median of 293.60. GuruFocus rates TSE:6228 with a GF Score™ of 69/100 and a GF Value™ of 円602.43 (Modestly Undervalued). The stock has 5 warning signs investors should review. Among 983 Semiconductors companies, JET Co ranks worse than 94.71% on this metric.
Days Inventory is also known as Days Sales of Inventory (DSI). JET Co's Average Total Inventories for the
six
months ended in Dec. 2025 was 円16,101 Mil. JET Co's Cost of Goods Sold for the
six
months ended in Dec. 2025 was 円5,804 Mil.
Hence, JET Co's Days Inventory for the
six
months ended in Dec. 2025 was 506.26.
The historical rank and industry rank for JET Co's Days Inventory or its related term are showing as below:
TSE:6228'
s Days Inventory Range Over the Past 10 Years
Min: 212.15 Med: 293.6 Max: 510.82
Current: 481.17
During the past 8 years, JET Co's highest Days Inventory was 510.82. The lowest was 212.15. And the median was 293.60.
TSE:6228's Days Inventory is ranked worse than 94.71% of 983
companies
in the Semiconductors industry
Industry Median: 112.18
vs TSE:6228: 481.17
JET Co's Days Inventory
declined
from Dec. 2024 (518.88) to Dec. 2025 (506.26).
Inventory Turnover measures how fast the company turns over its inventory within a year.
JET Co's Inventory Turnover for the
six
months ended in Dec. 2025 was 0.36.
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.
JET Co's Inventory-to-Revenue for the
six
months ended in Dec. 2025 was 2.18.
JET Co (TSE:6228) 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.
JET Co's Inventory Turnover for the
six
months ended in Dec. 2025 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.
JET Co's Inventory to Revenue for the
six
months ended in Dec. 2025 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.
JET Co Days Inventory Related Terms
JET Co Days Inventory Historical Data
* Premium members only.
The historical data trend for JET 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.
TSE:6228 vs AMAT, LRCX, KLAC: Days Inventory Comparison
For the Semiconductor Equipment & Materials subindustry, JET 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.
JET Co Days Inventory vs Semiconductors Industry
For the Semiconductors industry and Technology sector, JET Co's Days Inventory distribution charts can be found below:
* The bar in red indicates where JET Co'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.
JET Co (TSE:6228) has a Days Inventory of 506.26 as of Dec. 2025. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on JET Co and its competitors. This is 72% above median its historical median of 293.60. Over the past decade, JET Co's Days Inventory has ranged from 212.15 to 510.82. According to the industry distribution chart, JET Co ranks #931 out of 983 companies in the Semiconductors industry, placing it in the top 94.7%.
Is JET Co's Days Inventory too high?
JET Co's current Days Inventory of 506.26 is 72% above median its 10-year median of 293.60. Over the past 10 years, this metric has ranged from a low of 212.15 to a high of 510.82. The Semiconductors industry median Days Inventory is 112.18. JET Co's value of 506.26 is 351.3% above this industry median. Based on the distribution chart, JET Co ranks #931 out of 983 companies in the Semiconductors industry, which is in the bottom quartile relative to peers. Overall, JET Co has a GF Score™ of 69/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does JET Co's Days Inventory compare to AMAT and LRCX?
According to the Semiconductors industry distribution chart, JET Co ranks #931 out of 983 companies for Days Inventory. This places JET Co in the lower half of its industry. The industry median Days Inventory is 112.18. JET Co's value of 506.26 is 351.3% above this benchmark. Historically, JET Co's own Days Inventory has ranged from 212.15 to 510.82 over the past decade. While the company's 10-year median is 293.60 vs. the industry median of 112.18, JET Co 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 a Semiconductors company?
The median Days Inventory among Semiconductors companies is 112.18, based on 983 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. JET Co's current Days Inventory of 506.26 is 351.3% 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 JET Co and its competitors. For the Semiconductors industry, the median Days Inventory is 112.18 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. JET Co's current Days Inventory is 506.26, which is 72% above median its own 10-year median of 293.60. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is JET Co stock overvalued right now?
Based on GuruFocus' analysis, JET Co (TSE:6228) is currently considered Modestly Undervalued. The stock's GF Value™ is 円602.43, compared to a current price of 円476.00 — trading 21% below its estimated fair value. The current Days Inventory is 506.26, which is 72% above median its 10-year median of 293.60 and 351.3% above the Semiconductors industry median of 112.18. JET Co's overall GF Score™ is 69/100 with 5 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 JET Co (TSE:6228), the current Days Inventory is 506.26 as of Dec. 2025. 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 JET Co (TSE:6228) Overvalued in 2026?
Based on GuruFocus' analysis, JET Co stock appears to be undervalued.
The current stock price of 円476.00 is trading 21% below its estimated GF Value™ of 円602.43.
GuruFocus considers JET Co to be Modestly Undervalued.
Key valuation signals for TSE:6228:
Days Inventory: 506.26 (72% above median its 10-year median of 293.60)
GF Value™: 円602.43 vs. price of 円476.00 (21% below fair value)
Industry Position: 351.3% above the Semiconductors median (#931 of 983)
No single metric tells the full story. See the TSE:6228 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
JET Co Ltd is a key manufacturer of semiconductor cleaning equipment based in Okayama, Japan. The company specializes in the development, design, manufacturing, sales, and maintenance of batch-type cleaning systems used in the semiconductor manufacturing process also cater to the needs of their clients by enhancing operational efficiency. Additionally, their technology extends to new energy sectors, including lithium-ion battery testing equipment, supporting a more comfortable and convenient lifestyle.
69GF Score
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