East Tender Optoelectronics (ROCO:6588) Days Inventory: 202.50 (As of Dec. 2025) — 13% Above Median

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ROCO:6588 East Tender Optoelectronics Corp ROCO:6588
55 GF Score
Price NT$81.50
GF Value NT$35.22
Valuation Significantly Overvalued
! 3 Warning Signs
View Full Analysis

What is East Tender Optoelectronics Days Inventory?

East Tender Optoelectronics ROCO:6588 +9.99% 55 Days Inventory is 202.50 as of Dec. 2025, which is 13% above its 10-year median of 179.87. GuruFocus rates ROCO:6588 with a GF Score™ of 55/100 and a GF Value™ of NT$35.22 (Significantly Overvalued). The stock has 3 warning signs investors should review. Among 983 Semiconductors companies, East Tender Optoelectronics ranks worse than 54.02% on this metric.

Days Inventory is also known as Days Sales of Inventory (DSI). East Tender Optoelectronics's Average Total Inventories for the three months ended in Dec. 2025 was NT$62.1 Mil. East Tender Optoelectronics's Cost of Goods Sold for the three months ended in Dec. 2025 was NT$28.0 Mil. Hence, East Tender Optoelectronics's Days Inventory for the three months ended in Dec. 2025 was 202.50.

The historical rank and industry rank for East Tender Optoelectronics's Days Inventory or its related term are showing as below:

ROCO:6588' s Days Inventory Range Over the Past 10 Years
Min: 122   Med: 179.87   Max: 300.34
Current: 123.37

During the past 13 years, East Tender Optoelectronics's highest Days Inventory was 300.34. The lowest was 122.00. And the median was 179.87.

ROCO:6588's Days Inventory is ranked worse than
54.02% of 983 companies
in the Semiconductors industry
Industry Median: 112.18 vs ROCO:6588: 123.37

East Tender Optoelectronics's Days Inventory increased from Dec. 2024 (86.85) to Dec. 2025 (202.50). It might indicate that East Tender Optoelectronics's sales slowed down.

Inventory Turnover measures how fast the company turns over its inventory within a year. East Tender Optoelectronics's Inventory Turnover for the three months ended in Dec. 2025 was 0.45.

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. East Tender Optoelectronics's Inventory-to-Revenue for the three months ended in Dec. 2025 was 1.12.


East Tender Optoelectronics  (ROCO:6588) 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.

East Tender Optoelectronics's Inventory Turnover for the three 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.

East Tender Optoelectronics's Inventory to Revenue for the three 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.


East Tender Optoelectronics Days Inventory Related Terms


East Tender Optoelectronics Days Inventory Historical Data

* Premium members only.

The historical data trend for East Tender Optoelectronics'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.

East Tender Optoelectronics Days Inventory Chart

East Tender Optoelectronics Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Days Inventory
Get a 7-Day Free Trial Premium Member Only Premium Member Only 180.89 192.78 198.41 127.00 153.11

East Tender Optoelectronics Quarterly Data
Mar21 Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25
Days Inventory 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 86.85 100.94 91.55 101.97 202.50

ROCO:6588 vs NVDA, AVGO, MU: Days Inventory Comparison

For the Semiconductors subindustry, East Tender Optoelectronics'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.


East Tender Optoelectronics Days Inventory vs Semiconductors Industry

For the Semiconductors industry and Technology sector, East Tender Optoelectronics's Days Inventory distribution charts can be found below:

* The bar in red indicates where East Tender Optoelectronics's Days Inventory falls into.


ROCO:6588
55GF Score
East Tender Optoelectronics Corp ROCO:6588
Days Inventory is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

East Tender Optoelectronics Days Inventory Calculation

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

East Tender Optoelectronics's Days Inventory for the fiscal year that ended in Dec. 2025 is calculated as

Days Inventory (A: Dec. 2025 )
=Average Total Inventories / Cost of Goods Sold*Days in Period
=( (Total Inventories (A: Dec. 2024 ) + Total Inventories (A: Dec. 2025 )) / count ) / Cost of Goods Sold (A: Dec. 2025 )*Days in Period
=( (56.601 + 80.108) / 2 ) / 162.955*365
=68.3545 / 162.955*365
=153.11

East Tender Optoelectronics's Days Inventory for the quarter that ended in Dec. 2025 is calculated as:

Days Inventory (Q: Dec. 2025 )
=Average Total Inventories / Cost of Goods Sold*Days in Period
=( (Total Inventories (Q: Sep. 2025 ) + Total Inventories (Q: Dec. 2025 )) / count ) / Cost of Goods Sold (Q: Dec. 2025 )*Days in Period
=( (44.115 + 80.108) / 2 ) / 27.989*365 / 4
=62.1115 / 27.989*365 / 4
=202.50

* 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 202.50 mean?
East Tender Optoelectronics (ROCO:6588) has a Days Inventory of 202.50 as of Dec. 2025. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on East Tender Optoelectronics and its competitors. This is 13% above median its historical median of 179.87. Over the past decade, East Tender Optoelectronics' Days Inventory has ranged from 122.00 to 300.34. According to the industry distribution chart, East Tender Optoelectronics ranks #531 out of 983 companies in the Semiconductors industry, placing it in the top 54%.
Is East Tender Optoelectronics' Days Inventory too high?
East Tender Optoelectronics' current Days Inventory of 202.50 is 13% above median its 10-year median of 179.87. Over the past 10 years, this metric has ranged from a low of 122.00 to a high of 300.34. The Semiconductors industry median Days Inventory is 112.18. East Tender Optoelectronics' value of 202.50 is 80.5% above this industry median. Based on the distribution chart, East Tender Optoelectronics ranks #531 out of 983 companies in the Semiconductors industry, which is below the industry midpoint. Overall, East Tender Optoelectronics has a GF Score™ of 55/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does East Tender Optoelectronics' Days Inventory compare to NVDA and AVGO?
According to the Semiconductors industry distribution chart, East Tender Optoelectronics ranks #531 out of 983 companies for Days Inventory. This places East Tender Optoelectronics in the lower half of its industry. The industry median Days Inventory is 112.18. East Tender Optoelectronics' value of 202.50 is 80.5% above this benchmark. Historically, East Tender Optoelectronics' own Days Inventory has ranged from 122.00 to 300.34 over the past decade. While the company's 10-year median is 179.87 vs. the industry median of 112.18, East Tender Optoelectronics 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. East Tender Optoelectronics's current Days Inventory of 202.50 is 80.5% 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 East Tender Optoelectronics 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. East Tender Optoelectronics's current Days Inventory is 202.50, which is 13% above median its own 10-year median of 179.87. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is East Tender Optoelectronics stock overvalued right now?
Based on GuruFocus' analysis, East Tender Optoelectronics (ROCO:6588) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$35.22, compared to a current price of NT$81.50 — trading 131.4% above its estimated fair value. The current Days Inventory is 202.50, which is 13% above median its 10-year median of 179.87 and 80.5% above the Semiconductors industry median of 112.18. East Tender Optoelectronics' overall GF Score™ is 55/100 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 East Tender Optoelectronics (ROCO:6588), the current Days Inventory is 202.50 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 East Tender Optoelectronics (ROCO:6588) Overvalued in 2026?

Based on GuruFocus' analysis, East Tender Optoelectronics stock appears to be overvalued. The current stock price of NT$81.50 is trading 131.4% above its estimated GF Value™ of NT$35.22. GuruFocus considers East Tender Optoelectronics to be Significantly Overvalued.

Key valuation signals for ROCO:6588:

  • Days Inventory: 202.50 (13% above median its 10-year median of 179.87)
  • GF Value™: NT$35.22 vs. price of NT$81.50 (131.4% above fair value)
  • GF Score™: 55/100 with 3 warning signs
  • Industry Position: 80.5% above the Semiconductors median (#531 of 983)

No single metric tells the full story. See the ROCO:6588 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


East Tender Optoelectronics Business Description

Address No. 70, Section 2, Ligong 1st Road, Wujie Township, Yilan, TWN
East Tender Optoelectronics Corp is a Taiwan-based company engaged in developing and providing optical coating products and services. It offers narrow-band and broad-band filter chips.
55GF Score

Get the complete analysis for ROCO:6588

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

NT$81.50
Price
NT$35.22
GF Value