Formosa Optical Technology Co (ROCO:5312) Change In Inventory: NT$-119 Mil (TTM As of Jun. 2026)

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ROCO:5312 Formosa Optical Technology Co Ltd ROCO:5312
85 GF Score
Price NT$90.80
GF Value NT$111.97
Valuation Modestly Undervalued
! 3 Warning Signs
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What is Formosa Optical Technology Co Change In Inventory?

Formosa Optical Technology Co ROCO:5312 -0.98% 85 Change In Inventory is NT$-119 Mil as of Jun. 2026. GuruFocus rates ROCO:5312 with a GF Score™ of 85/100 and a GF Value™ of NT$111.97 (Modestly Undervalued). The stock has 3 warning signs investors should review.

Formosa Optical Technology Co's change in inventory for the quarter that ended in Jun. 2026 was NT$-43 Mil. It means Formosa Optical Technology Co's inventory increased by NT$43 Mil from Mar. 2026 to Jun. 2026 .

Formosa Optical Technology Co's change in inventory for the fiscal year that ended in Dec. 2025 was NT$-124 Mil. It means Formosa Optical Technology Co's inventory increased by NT$124 Mil from Dec. 2024 to Dec. 2025 .

Formosa Optical Technology Co's Total Inventories for the quarter that ended in Jun. 2026 was NT$947 Mil.

Days Inventory indicates the number of days of goods in sales that a company has in the inventory. Formosa Optical Technology Co's Days Inventory for the quarter that ended in Jun. 2026 was 220.63.

Inventory Turnover measures how fast the company turns over its inventory within a year. Formosa Optical Technology Co's Inventory Turnover for the quarter that ended in Jun. 2026 was 0.41.

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. Formosa Optical Technology Co's Inventory-to-Revenue for the quarter that ended in Jun. 2026 was 0.84.

Formosa Optical Technology Co  (ROCO:5312) Change In Inventory Explanation

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

Formosa Optical Technology Co's Days Inventory for the quarter that ended in is calculated as:

Days Inventory=Average Total Inventories/Cost of Goods Sold*Days in Period
=925.7765/382.887*365 / 4
=220.63

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

Formosa Optical Technology Co's Inventory Turnover for the quarter that ended in Jun. 2026 is calculated as

Inventory Turnover=Cost of Goods Sold / Average Total Inventories
=382.887 / 925.7765
=0.41

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.

Formosa Optical Technology Co's Inventory to Revenue for the quarter that ended in Jun. 2026 is calculated as

Inventory-to-Revenue=Average Total Inventories / Revenue
=925.7765 / 1097.556
=0.84

* 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.

Formosa Optical Technology Co Change In Inventory Related Terms

Formosa Optical Technology Co Change In Inventory Historical Data

* Premium members only.

The historical data trend for Formosa Optical Technology Co'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.

Formosa Optical Technology Co Change In Inventory Chart

Formosa Optical Technology Co Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Change In Inventory
Get a 7-Day Free Trial Premium Member Only Premium Member Only 21.70 0.70 -40.11 -112.93 -123.87

Formosa Optical Technology Co Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 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 Premium Member Only Premium Member Only Premium Member Only -58.88 -42.20 9.76 -43.30 -42.89
ROCO:5312
85GF Score
Formosa Optical Technology Co Ltd ROCO:5312
Change In Inventory is just one metric. See GF Score™, valuation, warning signs, and more.
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Formosa Optical Technology Co 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 quarterly data reported by the company within the most recent 12 months, which was NT$-119 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$-119 Mil mean?
Formosa Optical Technology Co (ROCO:5312) has a Change In Inventory of NT$-119 Mil as of Jun. 2026. Change in Inventory is the difference between current-period inventory and past-period inventory. View historical data for Formosa Optical Technology Co and its competitors.
Is Formosa Optical Technology Co's Change In Inventory too high?
Formosa Optical Technology Co's current Change In Inventory is NT$-119 Mil. Overall, Formosa Optical Technology Co has a GF Score™ of 85/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Formosa Optical Technology Co's Change In Inventory compare to ISRG and BDX?
Formosa Optical Technology Co's Change In Inventory of NT$-119 Mil can be compared against companies in the Medical Devices & Instruments 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 Medical Devices & Instruments company?
A good Change In Inventory depends on the Medical Devices & Instruments 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 Formosa Optical Technology Co and its competitors. Formosa Optical Technology Co's current Change In Inventory is NT$-119 Mil. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Formosa Optical Technology Co stock overvalued right now?
Based on GuruFocus' analysis, Formosa Optical Technology Co (ROCO:5312) is currently considered Modestly Undervalued. The stock's GF Value™ is NT$111.97, compared to a current price of NT$90.80 — trading 18.9% below its estimated fair value. The current Change In Inventory is NT$-119 Mil. Formosa Optical Technology Co's overall GF Score™ is 85/100 with 3 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 Formosa Optical Technology Co (ROCO:5312), the current Change In Inventory is NT$-119 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 Formosa Optical Technology Co (ROCO:5312) Overvalued in 2026?

Based on GuruFocus' analysis, Formosa Optical Technology Co stock appears to be undervalued. The current stock price of NT$90.80 is trading 18.9% below its estimated GF Value™ of NT$111.97. GuruFocus considers Formosa Optical Technology Co to be Modestly Undervalued.

Key valuation signals for ROCO:5312:

  • Change In Inventory: NT$-119 Mil
  • GF Value™: NT$111.97 vs. price of NT$90.80 (18.9% below fair value)
  • GF Score™: 85/100 with 3 warning signs

No single metric tells the full story. See the ROCO:5312 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.

Formosa Optical Technology Co Business Description

Address No. 97, Xintai 5th Road, 16th Floor, Section 1, Xizhi District, New Taipei City, TWN
Formosa Optical Technology Co Ltd is mainly engaged in the eyewear business, including optometry services and the retail business selling contact lenses and eye drops. The Group mainly derives revenue from the business divisions of Formosa Optical Technology and Bo Wei Optical, with Formosa Optical Technology generating maximum revenue. The majority of revenue is derived from the sale of glasses. The Group generates the majority of its revenue from Taiwan.
85GF Score

Get the complete analysis for ROCO:5312

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

NT$90.80
Price
NT$111.97
GF Value