Oriental System Technology (ROCO:6819) Change In Inventory: NT$15.0 Mil (TTM As of Jun. 2026)

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:6819 Oriental System Technology Inc ROCO:6819
62 GF Score
Price NT$69.80
GF Value NT$27.73
Valuation Significantly Overvalued
! 2 Warning Signs
View Full Analysis

What is Oriental System Technology Change In Inventory?

Oriental System Technology ROCO:6819 +8.89% 62 Change In Inventory is NT$15.0 Mil as of Jun. 2026. GuruFocus rates ROCO:6819 with a GF Score™ of 62/100 and a GF Value™ of NT$27.73 (Significantly Overvalued). The stock has 2 warning signs investors should review.

Oriental System Technology's change in inventory for the quarter that ended in Jun. 2026 was NT$6.6 Mil. It means Oriental System Technology's inventory declined by NT$6.6 Mil from Dec. 2025 to Jun. 2026 .

Oriental System Technology's change in inventory for the fiscal year that ended in Dec. 2025 was NT$2.5 Mil. It means Oriental System Technology's inventory declined by NT$2.5 Mil from Dec. 2024 to Dec. 2025 .

Oriental System Technology's Total Inventories for the quarter that ended in Jun. 2026 was NT$42.7 Mil.

Days Inventory indicates the number of days of goods in sales that a company has in the inventory. Oriental System Technology's Days Inventory for the quarter that ended in Jun. 2026 was 132.11.

Inventory Turnover measures how fast the company turns over its inventory within a year. Oriental System Technology's Inventory Turnover for the quarter that ended in Jun. 2026 was 1.38.

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. Oriental System Technology's Inventory-to-Revenue for the quarter that ended in Jun. 2026 was 0.34.


Oriental System Technology  (ROCO:6819) Change In Inventory Explanation

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

Oriental System Technology's Days Inventory for the quarter that ended in is calculated as:

Days Inventory=Average Total Inventories/Cost of Goods Sold*Days in Period
=46.0195/63.573*365 / 2
=132.11

2. Inventory Turnover measures how fast the company turns over its inventory within a year.

Oriental System Technology's Inventory Turnover for the quarter that ended in Jun. 2026 is calculated as

3. 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.

Oriental System Technology's Inventory to Revenue for the quarter that ended in Jun. 2026 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.


Oriental System Technology Change In Inventory Related Terms


Oriental System Technology Change In Inventory Historical Data

* Premium members only.

The historical data trend for Oriental System Technology's Change In 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.

Oriental System Technology Change In Inventory Chart

Oriental System Technology Annual Data
Trend Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Change In Inventory
Get a 7-Day Free Trial Premium Member Only -14.40 116.90 53.15 1.61 2.53

Oriental System Technology Semi-Annual Data
Dec17 Dec18 Jun19 Dec19 Jun20 Dec20 Jun21 Dec21 Jun22 Dec22 Jun23 Dec23 Jun24 Dec24 Jun25 Dec25 Jun26
Change In 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 2.37 -0.76 -5.93 8.46 6.59
ROCO:6819
62GF Score
Oriental System Technology Inc ROCO:6819
Change In Inventory is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Oriental System Technology Change In Inventory Calculation

Change In Inventory is the difference between last period's ending inventory and the current period's ending inventory.

Change In Inventory for the trailing twelve months (TTM) ended in Jun. 2026 adds up the semi-annually data reported by the company within the most recent 12 months, which was NT$15.0 Mil.

* 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 Change In Inventory →
What does a Change In Inventory of NT$15.0 Mil mean?
Oriental System Technology (ROCO:6819) has a Change In Inventory of NT$15.0 Mil as of Jun. 2026. Change in Inventory is the difference between current-period inventory and past-period inventory. View historical data for Oriental System Technology and its competitors.
Is Oriental System Technology's Change In Inventory too high?
Oriental System Technology's current Change In Inventory is NT$15.0 Mil. Overall, Oriental System Technology has a GF Score™ of 62/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Oriental System Technology's Change In Inventory compare to NVDA and AVGO?
Oriental System Technology's Change In Inventory of NT$15.0 Mil can be compared against companies in the Semiconductors industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Change In Inventory for a Semiconductors company?
A good Change In Inventory depends on the Semiconductors industry context. However, Change In Inventory should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Change In Inventory mean?
A high Change In Inventory can signal that a stock is expensive relative to its fundamentals. Change in Inventory is the difference between current-period inventory and past-period inventory. View historical data for Oriental System Technology and its competitors. Oriental System Technology's current Change In Inventory is NT$15.0 Mil. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Oriental System Technology stock overvalued right now?
Based on GuruFocus' analysis, Oriental System Technology (ROCO:6819) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$27.73, compared to a current price of NT$69.80 — trading 151.7% above its estimated fair value. The current Change In Inventory is NT$15.0 Mil. Oriental System Technology's overall GF Score™ is 62/100 with 2 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Change In Inventory calculated?
Change In Inventory is calculated from a company's financial statements. For Oriental System Technology (ROCO:6819), the current Change In Inventory is NT$15.0 Mil as of Jun. 2026. 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 Oriental System Technology (ROCO:6819) Overvalued in 2026?

Based on GuruFocus' analysis, Oriental System Technology stock appears to be overvalued. The current stock price of NT$69.80 is trading 151.7% above its estimated GF Value™ of NT$27.73. GuruFocus considers Oriental System Technology to be Significantly Overvalued.

Key valuation signals for ROCO:6819:

  • Change In Inventory: NT$15.0 Mil
  • GF Value™: NT$27.73 vs. price of NT$69.80 (151.7% above fair value)
  • GF Score™: 62/100 with 2 warning signs

No single metric tells the full story. See the ROCO:6819 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Oriental System Technology Business Description

Address No. 25, Industry East 9th Road, 2nd Floor, Hsinchu Science Park, Hsinchu, TWN, 30075
Oriental System Technology Inc. is engaged in the manufacturing of sensors. The product portfolio includes thermopile sensors, NDIR gas sensors, and optoelectronic components.
62GF Score

Get the complete analysis for ROCO:6819

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

NT$69.80
Price
NT$27.73
GF Value