LandMark Optoelectronics (ROCO:3081) Days Inventory: 130.09 (As of Mar. 2026) — 66% Above Median

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ROCO:3081 LandMark Optoelectronics Corp ROCO:3081
65 GF Score
Price NT$1,630.00
GF Value NT$754.75
Valuation Significantly Overvalued
! 3 Warning Signs
View Full Analysis

What is LandMark Optoelectronics Days Inventory?

LandMark Optoelectronics ROCO:3081 +9.76% 65 Days Inventory is 130.09 as of Mar. 2026, which is 66% above its 10-year median of 78.53. GuruFocus rates ROCO:3081 with a GF Score™ of 65/100 and a GF Value™ of NT$754.75 (Significantly Overvalued). The stock has 3 warning signs investors should review. Among 982 Semiconductors companies, LandMark Optoelectronics ranks worse than 54.07% on this metric.

Days Inventory is also known as Days Sales of Inventory (DSI). LandMark Optoelectronics's Average Total Inventories for the three months ended in Mar. 2026 was NT$583 Mil. LandMark Optoelectronics's Cost of Goods Sold for the three months ended in Mar. 2026 was NT$409 Mil. Hence, LandMark Optoelectronics's Days Inventory for the three months ended in Mar. 2026 was 130.09.

The historical rank and industry rank for LandMark Optoelectronics's Days Inventory or its related term are showing as below:

ROCO:3081' s Days Inventory Range Over the Past 10 Years
Min: 63.87   Med: 78.53   Max: 145.82
Current: 123.56

During the past 13 years, LandMark Optoelectronics's highest Days Inventory was 145.82. The lowest was 63.87. And the median was 78.53.

ROCO:3081's Days Inventory is ranked worse than
54.07% of 982 companies
in the Semiconductors industry
Industry Median: 112.535 vs ROCO:3081: 123.56

LandMark Optoelectronics's Days Inventory increased from Mar. 2025 (105.76) to Mar. 2026 (130.09). It might indicate that LandMark Optoelectronics's sales slowed down.

Inventory Turnover measures how fast the company turns over its inventory within a year. LandMark Optoelectronics's Inventory Turnover for the three months ended in Mar. 2026 was 0.70.

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. LandMark Optoelectronics's Inventory-to-Revenue for the three months ended in Mar. 2026 was 0.64.


LandMark Optoelectronics  (ROCO:3081) 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.

LandMark Optoelectronics's Inventory Turnover for the three months ended in Mar. 2026 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.

LandMark Optoelectronics's Inventory to Revenue for the three months ended in Mar. 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.


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.


LandMark Optoelectronics Days Inventory Related Terms


LandMark Optoelectronics Days Inventory Historical Data

* Premium members only.

The historical data trend for LandMark Optoelectronics'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.

LandMark Optoelectronics Days Inventory Chart

LandMark Optoelectronics 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 82.22 74.90 145.82 132.44 132.65

LandMark Optoelectronics Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
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 105.76 105.72 113.55 136.54 130.09

ROCO:3081 vs AMAT, LRCX, KLAC: Days Inventory Comparison

For the Semiconductor Equipment & Materials subindustry, LandMark Optoelectronics'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.


LandMark Optoelectronics Days Inventory vs Semiconductors Industry

For the Semiconductors industry and Technology sector, LandMark Optoelectronics's Days Inventory distribution charts can be found below:

* The bar in red indicates where LandMark Optoelectronics's Days Inventory falls into.


ROCO:3081
65GF Score
LandMark Optoelectronics Corp ROCO:3081
Days Inventory is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

LandMark Optoelectronics Days Inventory Calculation

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

LandMark Optoelectronics'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
=( (346.327 + 571.168) / 2 ) / 1262.273*365
=458.7475 / 1262.273*365
=132.65

LandMark Optoelectronics's Days Inventory for the quarter that ended in Mar. 2026 is calculated as:

Days Inventory (Q: Mar. 2026 )
=Average Total Inventories / Cost of Goods Sold*Days in Period
=( (Total Inventories (Q: Dec. 2025 ) + Total Inventories (Q: Mar. 2026 )) / count ) / Cost of Goods Sold (Q: Mar. 2026 )*Days in Period
=( (571.168 + 595.471) / 2 ) / 409.156*365 / 4
=583.3195 / 409.156*365 / 4
=130.09

* 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 130.09 mean?
LandMark Optoelectronics (ROCO:3081) has a Days Inventory of 130.09 as of Mar. 2026. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on LandMark Optoelectronics and its competitors. This is 66% above median its historical median of 78.53. Over the past decade, LandMark Optoelectronics' Days Inventory has ranged from 63.87 to 145.82. According to the industry distribution chart, LandMark Optoelectronics ranks #531 out of 982 companies in the Semiconductors industry, placing it in the top 54.1%.
Is LandMark Optoelectronics' Days Inventory too high?
LandMark Optoelectronics' current Days Inventory of 130.09 is 66% above median its 10-year median of 78.53. Over the past 10 years, this metric has ranged from a low of 63.87 to a high of 145.82. The Semiconductors industry median Days Inventory is 112.54. LandMark Optoelectronics' value of 130.09 is 15.6% above this industry median. Based on the distribution chart, LandMark Optoelectronics ranks #531 out of 982 companies in the Semiconductors industry, which is below the industry midpoint. Overall, LandMark Optoelectronics has a GF Score™ of 65/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does LandMark Optoelectronics' Days Inventory compare to AMAT and LRCX?
According to the Semiconductors industry distribution chart, LandMark Optoelectronics ranks #531 out of 982 companies for Days Inventory. This places LandMark Optoelectronics in the lower half of its industry. The industry median Days Inventory is 112.54. LandMark Optoelectronics' value of 130.09 is 15.6% above this benchmark. Historically, LandMark Optoelectronics' own Days Inventory has ranged from 63.87 to 145.82 over the past decade. While the company's 10-year median is 78.53 vs. the industry median of 112.54, LandMark Optoelectronics 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 112.54, based on 982 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. LandMark Optoelectronics's current Days Inventory of 130.09 is 15.6% 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 LandMark Optoelectronics and its competitors. For the Semiconductors industry, the median Days Inventory is 112.54 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. LandMark Optoelectronics's current Days Inventory is 130.09, which is 66% above median its own 10-year median of 78.53. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is LandMark Optoelectronics stock overvalued right now?
Based on GuruFocus' analysis, LandMark Optoelectronics (ROCO:3081) is currently considered Significantly Overvalued. The stock's GF Value™ is NT$754.75, compared to a current price of NT$1,630.00 — trading 116% above its estimated fair value. The current Days Inventory is 130.09, which is 66% above median its 10-year median of 78.53 and 15.6% above the Semiconductors industry median of 112.54. LandMark Optoelectronics' overall GF Score™ is 65/100 with 3 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 LandMark Optoelectronics (ROCO:3081), the current Days Inventory is 130.09 as of Mar. 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 LandMark Optoelectronics (ROCO:3081) Overvalued in 2026?

Based on GuruFocus' analysis, LandMark Optoelectronics stock appears to be overvalued. The current stock price of NT$1,630.00 is trading 116% above its estimated GF Value™ of NT$754.75. GuruFocus considers LandMark Optoelectronics to be Significantly Overvalued.

Key valuation signals for ROCO:3081:

  • Days Inventory: 130.09 (66% above median its 10-year median of 78.53)
  • GF Value™: NT$754.75 vs. price of NT$1,630.00 (116% above fair value)
  • GF Score™: 65/100 with 3 warning signs
  • Industry Position: 15.6% above the Semiconductors median (#531 of 982)

No single metric tells the full story. See the ROCO:3081 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


LandMark Optoelectronics Business Description

Address No. 12, Nanke 9th Road, Southern Science Park, Shanhua District, Tainan, TWN
LandMark Optoelectronics Corp is active in the semiconductor industry as an epi-wafer supplier. It is engaged in the manufacturing, processing, and selling of optical semiconductors, laser diodes, and high brightness InAlGaP/AlGalnAs. The company operates in a single reportable segment, which is single product manufacturing and selling of wafers. Some of its products are DFB Epiwafer, EML Epiwafer, APD Epiwafer, FP Epiwafer, and PIN PD Epiwafer. Its geographical segments are United States, Mainland China, Taiwan, and others.
65GF Score

Get the complete analysis for ROCO:3081

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

NT$1,630.00
Price
NT$754.75
GF Value