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Zilltek TechnologyROCO:6679 -8.37%83 Days Inventory is 279.85 as of Dec. 2025, which is 97% above its 10-year median of 142.28. GuruFocus rates ROCO:6679 with a GF Score™ of 83/100 and a GF Value™ of NT$319.70 (Possible Value Trap). The stock has 4 warning signs investors should review. Among 983 Semiconductors companies, Zilltek Technology ranks worse than 87.69% on this metric.
The historical rank and industry rank for Zilltek Technology's Days Inventory or its related term are showing as below:
ROCO:6679'
s Days Inventory Range Over the Past 10 Years
Min: 110.55 Med: 142.28 Max: 307.76
Current: 276.36
During the past 11 years, Zilltek Technology's highest Days Inventory was 307.76. The lowest was 110.55. And the median was 142.28.
ROCO:6679's Days Inventory is ranked worse than 87.69% of 983
companies
in the Semiconductors industry
Industry Median: 112.18
vs ROCO:6679: 276.36
Zilltek Technology's Days Inventory
declined
from Dec. 2024 (295.45) to Dec. 2025 (279.85).
Inventory Turnover measures how fast the company turns over its inventory within a year.
Zilltek Technology's Inventory Turnover for the
three
months ended in Dec. 2025 was 0.33.
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.
Zilltek Technology's Inventory-to-Revenue for the
three
months ended in Dec. 2025 was 1.63.
Zilltek Technology (ROCO:6679) 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.
Zilltek Technology'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.
Zilltek Technology'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.
Zilltek Technology Days Inventory Related Terms
Zilltek Technology Days Inventory Historical Data
* Premium members only.
The historical data trend for Zilltek Technology'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.
ROCO:6679 vs NVDA, AVGO, MU: Days Inventory Comparison
For the Semiconductors subindustry, Zilltek Technology'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.
Zilltek Technology Days Inventory vs Semiconductors Industry
For the Semiconductors industry and Technology sector, Zilltek Technology's Days Inventory distribution charts can be found below:
* The bar in red indicates where Zilltek Technology'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.
Zilltek Technology (ROCO:6679) has a Days Inventory of 279.85 as of Dec. 2025. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on Zilltek Technology and its competitors. This is 97% above median its historical median of 142.28. Over the past decade, Zilltek Technology's Days Inventory has ranged from 110.55 to 307.76. According to the industry distribution chart, Zilltek Technology ranks #862 out of 983 companies in the Semiconductors industry, placing it in the top 87.7%.
Is Zilltek Technology's Days Inventory too high?
Zilltek Technology's current Days Inventory of 279.85 is 97% above median its 10-year median of 142.28. Over the past 10 years, this metric has ranged from a low of 110.55 to a high of 307.76. The Semiconductors industry median Days Inventory is 112.18. Zilltek Technology's value of 279.85 is 149.5% above this industry median. Based on the distribution chart, Zilltek Technology ranks #862 out of 983 companies in the Semiconductors industry, which is in the bottom quartile relative to peers. Overall, Zilltek Technology has a GF Score™ of 83/100 and is considered Possible Value Trap, reflecting its overall financial health beyond just this single metric.
How does Zilltek Technology's Days Inventory compare to NVDA and AVGO?
According to the Semiconductors industry distribution chart, Zilltek Technology ranks #862 out of 983 companies for Days Inventory. This places Zilltek Technology in the lower half of its industry. The industry median Days Inventory is 112.18. Zilltek Technology's value of 279.85 is 149.5% above this benchmark. Historically, Zilltek Technology's own Days Inventory has ranged from 110.55 to 307.76 over the past decade. While the company's 10-year median is 142.28 vs. the industry median of 112.18, Zilltek Technology 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. Zilltek Technology's current Days Inventory of 279.85 is 149.5% 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 Zilltek Technology 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. Zilltek Technology's current Days Inventory is 279.85, which is 97% above median its own 10-year median of 142.28. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Zilltek Technology stock overvalued right now?
Based on GuruFocus' analysis, Zilltek Technology (ROCO:6679) is currently considered Possible Value Trap. The stock's GF Value™ is NT$319.70, compared to a current price of NT$219.00 — trading 31.5% below its estimated fair value. The current Days Inventory is 279.85, which is 97% above median its 10-year median of 142.28 and 149.5% above the Semiconductors industry median of 112.18. Zilltek Technology's overall GF Score™ is 83/100 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 Zilltek Technology (ROCO:6679), the current Days Inventory is 279.85 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 Zilltek Technology (ROCO:6679) Overvalued in 2026?
Based on GuruFocus' analysis, Zilltek Technology stock appears to be undervalued.
The current stock price of NT$219.00 is trading 31.5% below its estimated GF Value™ of NT$319.70.
GuruFocus considers Zilltek Technology to be Possible Value Trap.
Key valuation signals for ROCO:6679:
Days Inventory: 279.85 (97% above median its 10-year median of 142.28)
GF Value™: NT$319.70 vs. price of NT$219.00 (31.5% below fair value)
Industry Position: 149.5% above the Semiconductors median (#862 of 983)
No single metric tells the full story. See the ROCO:6679 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Zilltek Technology Corp engaged in the manufacturing of electronic components, buying/selling services, research and development, manufacturing, and sales of sensor and application chipsets. Company focuses on developing compact, energy-saving, and high-performance MEMS technologies to meet a variety of acoustic applications, including but not limited to laptops, TVs, tablets, smartphones, smart watches, smart speakers, drones, hearing aids, IoT devices, TWS headphones, sports equipment, and mobile infotainment systems. It operates in Taiwan, China and Other countries. Majority of revenue is from Taiwan.
83GF Score
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