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Joy Industrial CoROCO:4559 +3.97%59 Days Inventory is 78.39 as of Dec. 2025, which is 28% above its 10-year median of 61.31. GuruFocus rates ROCO:4559 with a GF Score™ of 59/100 and a GF Value™ of NT$8.15 (Modestly Overvalued). The stock has 8 warning signs investors should review. Among 1,290 Vehicles & Parts companies, Joy Industrial Co ranks better than 50.23% on this metric.
The historical rank and industry rank for Joy Industrial Co's Days Inventory or its related term are showing as below:
ROCO:4559'
s Days Inventory Range Over the Past 10 Years
Min: 45.62 Med: 61.31 Max: 100.53
Current: 80.26
During the past 13 years, Joy Industrial Co's highest Days Inventory was 100.53. The lowest was 45.62. And the median was 61.31.
ROCO:4559's Days Inventory is ranked better than 50.23% of 1290
companies
in the Vehicles & Parts industry
Industry Median: 80.43
vs ROCO:4559: 80.26
Joy Industrial Co's Days Inventory
increased
from Dec. 2024 (62.47) to Dec. 2025 (78.39).
It might indicate that Joy Industrial Co's sales slowed down.
Inventory Turnover measures how fast the company turns over its inventory within a year.
Joy Industrial Co's Inventory Turnover for the
six
months ended in Dec. 2025 was 2.33.
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.
Joy Industrial Co's Inventory-to-Revenue for the
six
months ended in Dec. 2025 was 0.32.
Joy Industrial Co (ROCO:4559) 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.
Joy Industrial 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.
Joy Industrial 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.
Joy Industrial Co Days Inventory Related Terms
Joy Industrial Co Days Inventory Historical Data
* Premium members only.
The historical data trend for Joy Industrial 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.
For the Auto Parts subindustry, Joy Industrial 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.
Joy Industrial Co Days Inventory vs Vehicles & Parts Industry
For the Vehicles & Parts industry and Consumer Cyclical sector, Joy Industrial Co's Days Inventory distribution charts can be found below:
* The bar in red indicates where Joy Industrial 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.
Joy Industrial Co (ROCO:4559) has a Days Inventory of 78.39 as of Dec. 2025. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on Joy Industrial Co and its competitors. This is 28% above median its historical median of 61.31. Over the past decade, Joy Industrial Co's Days Inventory has ranged from 45.62 to 100.53. According to the industry distribution chart, Joy Industrial Co ranks #642 out of 1290 companies in the Vehicles & Parts industry, placing it in the top 49.8%.
Is Joy Industrial Co's Days Inventory too high?
Joy Industrial Co's current Days Inventory of 78.39 is 28% above median its 10-year median of 61.31. Over the past 10 years, this metric has ranged from a low of 45.62 to a high of 100.53. The Vehicles & Parts industry median Days Inventory is 80.43. Joy Industrial Co's value of 78.39 is 2.5% below this industry median. Based on the distribution chart, Joy Industrial Co ranks #642 out of 1290 companies in the Vehicles & Parts industry, which is above the industry midpoint. Overall, Joy Industrial Co has a GF Score™ of 59/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Joy Industrial Co's Days Inventory compare to ORLY and AZO?
According to the Vehicles & Parts industry distribution chart, Joy Industrial Co ranks #642 out of 1290 companies for Days Inventory. This puts Joy Industrial Co in the upper half of its industry. The industry median Days Inventory is 80.43. Joy Industrial Co's value of 78.39 is 2.5% below this benchmark. Historically, Joy Industrial Co's own Days Inventory has ranged from 45.62 to 100.53 over the past decade. While the company's 10-year median is 61.31 vs. the industry median of 80.43, Joy Industrial 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 Vehicles & Parts company?
The median Days Inventory among Vehicles & Parts companies is 80.43, based on 1,290 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. Joy Industrial Co's current Days Inventory of 78.39 is 2.5% 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 Joy Industrial Co and its competitors. For the Vehicles & Parts industry, the median Days Inventory is 80.43 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Joy Industrial Co's current Days Inventory is 78.39, which is 28% above median its own 10-year median of 61.31. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Joy Industrial Co stock overvalued right now?
Based on GuruFocus' analysis, Joy Industrial Co (ROCO:4559) is currently considered Modestly Overvalued. The stock's GF Value™ is NT$8.15, compared to a current price of NT$9.95 — trading 22.1% above its estimated fair value. The current Days Inventory is 78.39, which is 28% above median its 10-year median of 61.31 and 2.5% below the Vehicles & Parts industry median of 80.43. Joy Industrial Co's overall GF Score™ is 59/100 with 8 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 Joy Industrial Co (ROCO:4559), the current Days Inventory is 78.39 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 Joy Industrial Co (ROCO:4559) Overvalued in 2026?
Based on GuruFocus' analysis, Joy Industrial Co stock appears to be overvalued.
The current stock price of NT$9.95 is trading 22.1% above its estimated GF Value™ of NT$8.15.
GuruFocus considers Joy Industrial Co to be Modestly Overvalued.
Key valuation signals for ROCO:4559:
Days Inventory: 78.39 (28% above median its 10-year median of 61.31)
GF Value™: NT$8.15 vs. price of NT$9.95 (22.1% above fair value)
Industry Position: 2.5% below the Vehicles & Parts median (#642 of 1290)
No single metric tells the full story. See the ROCO:4559 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Joy Industrial Co Ltd is engaged in manufacturing, developing, and selling related products for bicycles, and motorcycle parts, as well as operating related businesses. The company's products include hubs and wheelset series. It generates the majority of its revenue in China followed by Taiwan, Europe, and others.
59GF Score
Get the complete analysis for ROCO:4559
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