Silicon OptronicsTPE:3530 +1.90%71 Days Inventory is 217.74 as of Dec. 2025, which is 36% above its 10-year median of 159.83. GuruFocus rates TPE:3530 with a GF Score™ of 71/100 and a GF Value™ of NT$83.77 (Modestly Undervalued). The stock has 6 warning signs investors should review. Among 980 Semiconductors companies, Silicon Optronics ranks worse than 87.55% on this metric.
The historical rank and industry rank for Silicon Optronics's Days Inventory or its related term are showing as below:
TPE:3530'
s Days Inventory Range Over the Past 10 Years
Min: 86.01 Med: 159.83 Max: 467.14
Current: 275.91
During the past 13 years, Silicon Optronics's highest Days Inventory was 467.14. The lowest was 86.01. And the median was 159.83.
TPE:3530's Days Inventory is ranked worse than 87.55% of 980
companies
in the Semiconductors industry
Industry Median: 111.93
vs TPE:3530: 275.91
Silicon Optronics's Days Inventory
declined
from Dec. 2024 (217.92) to Dec. 2025 (217.74).
Inventory Turnover measures how fast the company turns over its inventory within a year.
Silicon Optronics's Inventory Turnover for the
three
months ended in Dec. 2025 was 0.42.
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.
Silicon Optronics's Inventory-to-Revenue for the
three
months ended in Dec. 2025 was 1.62.
Silicon Optronics (TPE:3530) 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.
Silicon Optronics'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.
Silicon Optronics'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.
Silicon Optronics Days Inventory Related Terms
Silicon Optronics Days Inventory Historical Data
* Premium members only.
The historical data trend for Silicon Optronics'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.
TPE:3530 vs NVDA, AVGO, MU: Days Inventory Comparison
For the Semiconductors subindustry, Silicon Optronics'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.
Silicon Optronics Days Inventory vs Semiconductors Industry
For the Semiconductors industry and Technology sector, Silicon Optronics's Days Inventory distribution charts can be found below:
* The bar in red indicates where Silicon Optronics'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.
Silicon Optronics (TPE:3530) has a Days Inventory of 217.74 as of Dec. 2025. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on Silicon Optronics and its competitors. This is 36% above median its historical median of 159.83. Over the past decade, Silicon Optronics' Days Inventory has ranged from 86.01 to 467.14. According to the industry distribution chart, Silicon Optronics ranks #858 out of 980 companies in the Semiconductors industry, placing it in the top 87.6%.
Is Silicon Optronics' Days Inventory too high?
Silicon Optronics' current Days Inventory of 217.74 is 36% above median its 10-year median of 159.83. Over the past 10 years, this metric has ranged from a low of 86.01 to a high of 467.14. The Semiconductors industry median Days Inventory is 111.93. Silicon Optronics' value of 217.74 is 94.5% above this industry median. Based on the distribution chart, Silicon Optronics ranks #858 out of 980 companies in the Semiconductors industry, which is in the bottom quartile relative to peers. Overall, Silicon Optronics has a GF Score™ of 71/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Silicon Optronics' Days Inventory compare to NVDA and AVGO?
According to the Semiconductors industry distribution chart, Silicon Optronics ranks #858 out of 980 companies for Days Inventory. This places Silicon Optronics in the lower half of its industry. The industry median Days Inventory is 111.93. Silicon Optronics' value of 217.74 is 94.5% above this benchmark. Historically, Silicon Optronics' own Days Inventory has ranged from 86.01 to 467.14 over the past decade. While the company's 10-year median is 159.83 vs. the industry median of 111.93, Silicon Optronics 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 111.93, based on 980 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. Silicon Optronics's current Days Inventory of 217.74 is 94.5% 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 Silicon Optronics and its competitors. For the Semiconductors industry, the median Days Inventory is 111.93 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Silicon Optronics's current Days Inventory is 217.74, which is 36% above median its own 10-year median of 159.83. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Silicon Optronics stock overvalued right now?
Based on GuruFocus' analysis, Silicon Optronics (TPE:3530) is currently considered Modestly Undervalued. The stock's GF Value™ is NT$83.77, compared to a current price of NT$69.70 — trading 16.8% below its estimated fair value. The current Days Inventory is 217.74, which is 36% above median its 10-year median of 159.83 and 94.5% above the Semiconductors industry median of 111.93. Silicon Optronics' overall GF Score™ is 71/100 with 6 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 Silicon Optronics (TPE:3530), the current Days Inventory is 217.74 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 Silicon Optronics (TPE:3530) Overvalued in 2026?
Based on GuruFocus' analysis, Silicon Optronics stock appears to be undervalued.
The current stock price of NT$69.70 is trading 16.8% below its estimated GF Value™ of NT$83.77.
GuruFocus considers Silicon Optronics to be Modestly Undervalued.
Key valuation signals for TPE:3530:
Days Inventory: 217.74 (36% above median its 10-year median of 159.83)
GF Value™: NT$83.77 vs. price of NT$69.70 (16.8% below fair value)
Industry Position: 94.5% above the Semiconductors median (#858 of 980)
No single metric tells the full story. See the TPE:3530 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Silicon Optronics Inc is engaged in the design, development, and sale of complementary metal-oxide semiconductors. Its products include image sensors and shutters. The company derives revenue from complementary metal-oxide semiconductors. Geographically, it operates in Hong Kong, the United States, Taiwan, and other countries, with the majority of revenue deriving from Hong Kong.
71GF Score
Get the complete analysis for TPE:3530
Days Inventory is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
TPE:3530 has been successfully added to your 
