RDC Semiconductor Co (ROCO:3228) Days Inventory: 423.75 (As of Dec. 2025) — 23% Below 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:3228 RDC Semiconductor Co Ltd ROCO:3228
51 GF Score
Price NT$159.50
GF Value NT$135.83
Valuation Modestly Overvalued
! 4 Warning Signs
View Full Analysis

What is RDC Semiconductor Co Days Inventory?

RDC Semiconductor Co ROCO:3228 -5.06% 51 Days Inventory is 423.75 as of Dec. 2025, which is 23% below its 10-year median of 553.72. GuruFocus rates ROCO:3228 with a GF Score™ of 51/100 and a GF Value™ of NT$135.83 (Modestly Overvalued). The stock has 4 warning signs investors should review. Among 983 Semiconductors companies, RDC Semiconductor Co ranks worse than 94.1% on this metric.

Days Inventory is also known as Days Sales of Inventory (DSI). RDC Semiconductor Co's Average Total Inventories for the three months ended in Dec. 2025 was NT$140.5 Mil. RDC Semiconductor Co's Cost of Goods Sold for the three months ended in Dec. 2025 was NT$30.3 Mil. Hence, RDC Semiconductor Co's Days Inventory for the three months ended in Dec. 2025 was 423.75.

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

ROCO:3228' s Days Inventory Range Over the Past 10 Years
Min: 439.69   Med: 553.72   Max: 736.35
Current: 466.62

During the past 13 years, RDC Semiconductor Co's highest Days Inventory was 736.35. The lowest was 439.69. And the median was 553.72.

ROCO:3228's Days Inventory is ranked worse than
94.1% of 983 companies
in the Semiconductors industry
Industry Median: 112.18 vs ROCO:3228: 466.62

RDC Semiconductor Co's Days Inventory declined from Dec. 2024 (605.94) to Dec. 2025 (423.75).

Inventory Turnover measures how fast the company turns over its inventory within a year. RDC Semiconductor Co's Inventory Turnover for the three months ended in Dec. 2025 was 0.22.

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. RDC Semiconductor Co's Inventory-to-Revenue for the three months ended in Dec. 2025 was 1.93.


RDC Semiconductor Co  (ROCO:3228) 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.

RDC Semiconductor 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.

RDC Semiconductor 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.


RDC Semiconductor Co Days Inventory Related Terms


RDC Semiconductor Co Days Inventory Historical Data

* Premium members only.

The historical data trend for RDC Semiconductor 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.

RDC Semiconductor Co Days Inventory Chart

RDC Semiconductor 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 439.69 525.06 550.03 489.92 464.24

RDC Semiconductor 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 605.94 561.30 469.56 429.46 423.75

ROCO:3228 vs NVDA, AVGO, MU: Days Inventory Comparison

For the Semiconductors subindustry, RDC Semiconductor 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.


RDC Semiconductor Co Days Inventory vs Semiconductors Industry

For the Semiconductors industry and Technology sector, RDC Semiconductor Co's Days Inventory distribution charts can be found below:

* The bar in red indicates where RDC Semiconductor Co's Days Inventory falls into.


ROCO:3228
51GF Score
RDC Semiconductor Co Ltd ROCO:3228
Days Inventory is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

RDC Semiconductor Co Days Inventory Calculation

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

RDC Semiconductor 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
=( (158.477 + 138.047) / 2 ) / 116.569*365
=148.262 / 116.569*365
=464.24

RDC Semiconductor 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
=( (142.922 + 138.047) / 2 ) / 30.252*365 / 4
=140.4845 / 30.252*365 / 4
=423.75

* 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 423.75 mean?
RDC Semiconductor Co (ROCO:3228) has a Days Inventory of 423.75 as of Dec. 2025. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on RDC Semiconductor Co and its competitors. This is 23% below median its historical median of 553.72. Over the past decade, RDC Semiconductor Co's Days Inventory has ranged from 439.69 to 736.35. According to the industry distribution chart, RDC Semiconductor Co ranks #925 out of 983 companies in the Semiconductors industry, placing it in the top 94.1%.
Is RDC Semiconductor Co's Days Inventory too high?
RDC Semiconductor Co's current Days Inventory of 423.75 is 23% below median its 10-year median of 553.72. Over the past 10 years, this metric has ranged from a low of 439.69 to a high of 736.35. The Semiconductors industry median Days Inventory is 112.18. RDC Semiconductor Co's value of 423.75 is 277.7% above this industry median. Based on the distribution chart, RDC Semiconductor Co ranks #925 out of 983 companies in the Semiconductors industry, which is in the bottom quartile relative to peers. Overall, RDC Semiconductor Co has a GF Score™ of 51/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does RDC Semiconductor Co's Days Inventory compare to NVDA and AVGO?
According to the Semiconductors industry distribution chart, RDC Semiconductor Co ranks #925 out of 983 companies for Days Inventory. This places RDC Semiconductor Co in the lower half of its industry. The industry median Days Inventory is 112.18. RDC Semiconductor Co's value of 423.75 is 277.7% above this benchmark. Historically, RDC Semiconductor Co's own Days Inventory has ranged from 439.69 to 736.35 over the past decade. While the company's 10-year median is 553.72 vs. the industry median of 112.18, RDC Semiconductor 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. RDC Semiconductor Co's current Days Inventory of 423.75 is 277.7% 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 RDC Semiconductor 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. RDC Semiconductor Co's current Days Inventory is 423.75, which is 23% below median its own 10-year median of 553.72. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is RDC Semiconductor Co stock overvalued right now?
Based on GuruFocus' analysis, RDC Semiconductor Co (ROCO:3228) is currently considered Modestly Overvalued. The stock's GF Value™ is NT$135.83, compared to a current price of NT$159.50 — trading 17.4% above its estimated fair value. The current Days Inventory is 423.75, which is 23% below median its 10-year median of 553.72 and 277.7% above the Semiconductors industry median of 112.18. RDC Semiconductor Co's overall GF Score™ is 51/100 with 4 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 RDC Semiconductor Co (ROCO:3228), the current Days Inventory is 423.75 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 RDC Semiconductor Co (ROCO:3228) Overvalued in 2026?

Based on GuruFocus' analysis, RDC Semiconductor Co stock appears to be overvalued. The current stock price of NT$159.50 is trading 17.4% above its estimated GF Value™ of NT$135.83. GuruFocus considers RDC Semiconductor Co to be Modestly Overvalued.

Key valuation signals for ROCO:3228:

  • Days Inventory: 423.75 (23% below median its 10-year median of 553.72)
  • GF Value™: NT$135.83 vs. price of NT$159.50 (17.4% above fair value)
  • GF Score™: 51/100 with 4 warning signs
  • Industry Position: 277.7% above the Semiconductors median (#925 of 983)

No single metric tells the full story. See the ROCO:3228 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


RDC Semiconductor Co Business Description

Address Lixing Road, 6th Floor-1, No.2-1, Hsinchu Science Park, Hsinchu, TWN, 30078
RDC Semiconductor Co Ltd mainly researches, develops, manufactures, and sells 16-bit and 32-bit microcontrollers, microelectromechanical integrated applications and products, 32-bit and 64-bit microprocessors, IA automated system-on-a-chip (SoC) products, digital system applications products, server and cloud storage system chip products. The products of the company include Processor Platform, MCU & NPU, Low Power SoCs, RDC ASIC Service, and others.
51GF Score

Get the complete analysis for ROCO:3228

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

NT$159.50
Price
NT$135.83
GF Value