Tai-Tech Advanced Electronics Co (ROCO:3357) Days Inventory: 79.16 (As of Dec. 2025) — Near Median

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
Director of Data and Quant Analytics at GuruFocus
Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Reviewed by: Charlie Tian Charlie Tian
Charlie Tian
Charlie Tian
Founder & CEO of GuruFocus
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.

ROCO:3357 Tai-Tech Advanced Electronics Co Ltd ROCO:3357
62 GF Score
Price NT$218.00
GF Value NT$154.04
Valuation Significantly Overvalued
! 3 Warning Signs
View Full Analysis

What is Tai-Tech Advanced Electronics Co Days Inventory?

Tai-Tech Advanced Electronics Co ROCO:3357 -7.82% 62 Days Inventory is 79.16 as of Dec. 2025, which is 7% above its 10-year median of 74.26. GuruFocus rates ROCO:3357 with a GF Score™ of 62/100 and a GF Value™ of NT$154.04 (Significantly Overvalued). The stock has 3 warning signs investors should review. Among 2,419 Hardware companies, Tai-Tech Advanced Electronics Co ranks better than 62.01% on this metric.

Days Inventory is also known as Days Sales of Inventory (DSI). Tai-Tech Advanced Electronics Co's Average Total Inventories for the three months ended in Dec. 2025 was NT$1,121 Mil. Tai-Tech Advanced Electronics Co's Cost of Goods Sold for the three months ended in Dec. 2025 was NT$1,293 Mil. Hence, Tai-Tech Advanced Electronics Co's Days Inventory for the three months ended in Dec. 2025 was 79.16.

The historical rank and industry rank for Tai-Tech Advanced Electronics Co's Days Inventory or its related term are showing as below:

ROCO:3357' s Days Inventory Range Over the Past 10 Years
Min: 61.73   Med: 74.26   Max: 94.29
Current: 76.45

During the past 13 years, Tai-Tech Advanced Electronics Co's highest Days Inventory was 94.29. The lowest was 61.73. And the median was 74.26.

ROCO:3357's Days Inventory is ranked better than
62.01% of 2419 companies
in the Hardware industry
Industry Median: 94.24 vs ROCO:3357: 76.45

Tai-Tech Advanced Electronics Co's Days Inventory increased from Dec. 2024 (69.76) to Dec. 2025 (79.16). It might indicate that Tai-Tech Advanced Electronics Co's sales slowed down.

Inventory Turnover measures how fast the company turns over its inventory within a year. Tai-Tech Advanced Electronics Co's Inventory Turnover for the three months ended in Dec. 2025 was 1.15.

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. Tai-Tech Advanced Electronics Co's Inventory-to-Revenue for the three months ended in Dec. 2025 was 0.62.


Tai-Tech Advanced Electronics Co  (ROCO:3357) 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.

Tai-Tech Advanced Electronics Co'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.

Tai-Tech Advanced Electronics Co'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.


Tai-Tech Advanced Electronics Co Days Inventory Related Terms


Tai-Tech Advanced Electronics Co Days Inventory Historical Data

* Premium members only.

The historical data trend for Tai-Tech Advanced Electronics 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.

Tai-Tech Advanced Electronics Co Days Inventory Chart

Tai-Tech Advanced Electronics Co 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 65.05 93.14 94.29 72.78 77.24

Tai-Tech Advanced Electronics Co 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 69.76 74.12 74.03 77.42 79.16

ROCO:3357 vs APH, GLW: Days Inventory Comparison

For the Electronic Components subindustry, Tai-Tech Advanced Electronics 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.


Tai-Tech Advanced Electronics Co Days Inventory vs Hardware Industry

For the Hardware industry and Technology sector, Tai-Tech Advanced Electronics Co's Days Inventory distribution charts can be found below:

* The bar in red indicates where Tai-Tech Advanced Electronics Co's Days Inventory falls into.


ROCO:3357
62GF Score
Tai-Tech Advanced Electronics Co Ltd ROCO:3357
Days Inventory is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Tai-Tech Advanced Electronics Co Days Inventory Calculation

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

Tai-Tech Advanced Electronics Co'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
=( (896.45 + 1167.977) / 2 ) / 4877.989*365
=1032.2135 / 4877.989*365
=77.24

Tai-Tech Advanced Electronics Co'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
=( (1074.619 + 1167.977) / 2 ) / 1292.576*365 / 4
=1121.298 / 1292.576*365 / 4
=79.16

* 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 79.16 mean?
Tai-Tech Advanced Electronics Co (ROCO:3357) has a Days Inventory of 79.16 as of Dec. 2025. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on Tai-Tech Advanced Electronics Co and its competitors. This is near median its historical median of 74.26. Over the past decade, Tai-Tech Advanced Electronics Co's Days Inventory has ranged from 61.73 to 94.29. According to the industry distribution chart, Tai-Tech Advanced Electronics Co ranks #919 out of 2419 companies in the Hardware industry, placing it in the top 38%.
Is Tai-Tech Advanced Electronics Co's Days Inventory too high?
Tai-Tech Advanced Electronics Co's current Days Inventory of 79.16 is near median its 10-year median of 74.26. Over the past 10 years, this metric has ranged from a low of 61.73 to a high of 94.29. The Hardware industry median Days Inventory is 94.24. Tai-Tech Advanced Electronics Co's value of 79.16 is 16% below this industry median. Based on the distribution chart, Tai-Tech Advanced Electronics Co ranks #919 out of 2419 companies in the Hardware industry, which is above the industry midpoint. Overall, Tai-Tech Advanced Electronics Co has a GF Score™ of 62/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Tai-Tech Advanced Electronics Co's Days Inventory compare to APH and GLW?
According to the Hardware industry distribution chart, Tai-Tech Advanced Electronics Co ranks #919 out of 2419 companies for Days Inventory. This puts Tai-Tech Advanced Electronics Co in the upper half of its industry. The industry median Days Inventory is 94.24. Tai-Tech Advanced Electronics Co's value of 79.16 is 16% below this benchmark. Historically, Tai-Tech Advanced Electronics Co's own Days Inventory has ranged from 61.73 to 94.29 over the past decade. While the company's 10-year median is 74.26 vs. the industry median of 94.24, Tai-Tech Advanced Electronics 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 Hardware company?
The median Days Inventory among Hardware companies is 94.24, based on 2,419 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. Tai-Tech Advanced Electronics Co's current Days Inventory of 79.16 is 16% 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 Tai-Tech Advanced Electronics Co and its competitors. For the Hardware industry, the median Days Inventory is 94.24 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Tai-Tech Advanced Electronics Co's current Days Inventory is 79.16, which is near median its own 10-year median of 74.26. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Tai-Tech Advanced Electronics Co stock overvalued right now?
Based on GuruFocus' analysis, Tai-Tech Advanced Electronics Co (ROCO:3357) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$154.04, compared to a current price of NT$218.00 — trading 41.5% above its estimated fair value. The current Days Inventory is 79.16, which is near median its 10-year median of 74.26 and 16% below the Hardware industry median of 94.24. Tai-Tech Advanced Electronics Co's overall GF Score™ is 62/100 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 Tai-Tech Advanced Electronics Co (ROCO:3357), the current Days Inventory is 79.16 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 Tai-Tech Advanced Electronics Co (ROCO:3357) Overvalued in 2026?

Based on GuruFocus' analysis, Tai-Tech Advanced Electronics Co stock appears to be overvalued. The current stock price of NT$218.00 is trading 41.5% above its estimated GF Value™ of NT$154.04. GuruFocus considers Tai-Tech Advanced Electronics Co to be Significantly Overvalued.

Key valuation signals for ROCO:3357:

  • Days Inventory: 79.16 (near median its 10-year median of 74.26)
  • GF Value™: NT$154.04 vs. price of NT$218.00 (41.5% above fair value)
  • GF Score™: 62/100 with 3 warning signs
  • Industry Position: 16% below the Hardware median (#919 of 2419)

No single metric tells the full story. See the ROCO:3357 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Tai-Tech Advanced Electronics Co Business Description

Address No. 1, You 4th Road, Youth Industrial Park, Yangmei District, Taoyuan, TWN, 326013
Tai-Tech Advanced Electronics Co Ltd is engaged in the manufacturing and processing of electronic parts, magnet cores, multilayer wire-wound and other wire-wound products. The company focuses on the development, manufacturing and sales of magnetic materials and inductor components. The Company's revenue is derived from Wire-Wound Products, Multilayer Products, and Others.
62GF Score

Get the complete analysis for ROCO:3357

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

NT$218.00
Price
NT$154.04
GF Value