Aurora Optoelectronics Co (SHSE:600666) Days Inventory: 48.78 (As of Mar. 2026) — 86% Below Median

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.

SHSE:600666 Aurora Optoelectronics Co Ltd SHSE:600666
46 GF Score
Price ¥3.11
GF Value ¥3.10
Valuation Fairly Valued
! 3 Warning Signs
View Full Analysis

What is Aurora Optoelectronics Co Days Inventory?

Aurora Optoelectronics Co SHSE:600666 -6.33% 46 Days Inventory is 48.78 as of Mar. 2026, which is 86% below its 10-year median of 337.13. GuruFocus rates SHSE:600666 with a GF Score™ of 46/100 and a GF Value™ of ¥3.10 (Fairly Valued). The stock has 3 warning signs investors should review. Among 923 Drug Manufacturers companies, Aurora Optoelectronics Co ranks better than 92.52% on this metric.

Days Inventory is also known as Days Sales of Inventory (DSI). Aurora Optoelectronics Co's Average Total Inventories for the three months ended in Mar. 2026 was ¥56.9 Mil. Aurora Optoelectronics Co's Cost of Goods Sold for the three months ended in Mar. 2026 was ¥106.4 Mil. Hence, Aurora Optoelectronics Co's Days Inventory for the three months ended in Mar. 2026 was 48.78.

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

SHSE:600666' s Days Inventory Range Over the Past 10 Years
Min: 49.4   Med: 337.13   Max: 458.87
Current: 57.57

During the past 13 years, Aurora Optoelectronics Co's highest Days Inventory was 458.87. The lowest was 49.40. And the median was 337.13.

SHSE:600666's Days Inventory is ranked better than
92.52% of 923 companies
in the Drug Manufacturers industry
Industry Median: 164.38 vs SHSE:600666: 57.57

Aurora Optoelectronics Co's Days Inventory declined from Mar. 2025 (71.74) to Mar. 2026 (48.78).

Inventory Turnover measures how fast the company turns over its inventory within a year. Aurora Optoelectronics Co's Inventory Turnover for the three months ended in Mar. 2026 was 1.87.

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. Aurora Optoelectronics Co's Inventory-to-Revenue for the three months ended in Mar. 2026 was 0.47.


Aurora Optoelectronics Co  (SHSE:600666) 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.

Aurora Optoelectronics Co'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.

Aurora Optoelectronics Co'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.


Aurora Optoelectronics Co Days Inventory Related Terms


Aurora Optoelectronics Co Days Inventory Historical Data

* Premium members only.

The historical data trend for Aurora Optoelectronics Co'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.

Aurora Optoelectronics Co Days Inventory Chart

Aurora Optoelectronics Co 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 309.80 322.71 234.69 79.71 49.40

Aurora Optoelectronics Co 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 71.74 61.16 63.71 48.72 48.78

SHSE:600666 vs LLY, JNJ, ABBV: Days Inventory Comparison

For the Drug Manufacturers - General subindustry, Aurora Optoelectronics Co'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.


Aurora Optoelectronics Co Days Inventory vs Drug Manufacturers Industry

For the Drug Manufacturers industry and Healthcare sector, Aurora Optoelectronics Co's Days Inventory distribution charts can be found below:

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


SHSE:600666
46GF Score
Aurora Optoelectronics Co Ltd SHSE:600666
Days Inventory is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Aurora Optoelectronics Co Days Inventory Calculation

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

Aurora Optoelectronics Co'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
=( (67.471 + 40.422) / 2 ) / 398.578*365
=53.9465 / 398.578*365
=49.40

Aurora Optoelectronics Co'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
=( (40.422 + 73.32) / 2 ) / 106.386*365 / 4
=56.871 / 106.386*365 / 4
=48.78

* 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 48.78 mean?
Aurora Optoelectronics Co (SHSE:600666) has a Days Inventory of 48.78 as of Mar. 2026. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on Aurora Optoelectronics Co and its competitors. This is 86% below median its historical median of 337.13. Over the past decade, Aurora Optoelectronics Co's Days Inventory has ranged from 49.40 to 458.87. According to the industry distribution chart, Aurora Optoelectronics Co ranks #69 out of 923 companies in the Drug Manufacturers industry, placing it in the top 7.5%.
Is Aurora Optoelectronics Co's Days Inventory too high?
Aurora Optoelectronics Co's current Days Inventory of 48.78 is 86% below median its 10-year median of 337.13. Over the past 10 years, this metric has ranged from a low of 49.40 to a high of 458.87. The Drug Manufacturers industry median Days Inventory is 164.38. Aurora Optoelectronics Co's value of 48.78 is 70.3% below this industry median. Based on the distribution chart, Aurora Optoelectronics Co ranks #69 out of 923 companies in the Drug Manufacturers industry, which is in the top quartile — a strong position relative to peers. Overall, Aurora Optoelectronics Co has a GF Score™ of 46/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Aurora Optoelectronics Co's Days Inventory compare to LLY and JNJ?
According to the Drug Manufacturers industry distribution chart, Aurora Optoelectronics Co ranks #69 out of 923 companies for Days Inventory. This places Aurora Optoelectronics Co in the top 8% of its industry — outperforming the majority of peers. The industry median Days Inventory is 164.38. Aurora Optoelectronics Co's value of 48.78 is 70.3% below this benchmark. Historically, Aurora Optoelectronics Co's own Days Inventory has ranged from 49.40 to 458.87 over the past decade. While the company's 10-year median is 337.13 vs. the industry median of 164.38, Aurora Optoelectronics Co has consistently been below 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 Drug Manufacturers company?
The median Days Inventory among Drug Manufacturers companies is 164.38, based on 923 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. Aurora Optoelectronics Co's current Days Inventory of 48.78 is 70.3% below 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 Aurora Optoelectronics Co and its competitors. For the Drug Manufacturers industry, the median Days Inventory is 164.38 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Aurora Optoelectronics Co's current Days Inventory is 48.78, which is 86% below median its own 10-year median of 337.13. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Aurora Optoelectronics Co stock overvalued right now?
Based on GuruFocus' analysis, Aurora Optoelectronics Co (SHSE:600666) is currently considered Fairly Valued. The stock's GF Value™ is ¥3.10, compared to a current price of ¥3.11 — trading 0.3% above its estimated fair value. The current Days Inventory is 48.78, which is 86% below median its 10-year median of 337.13 and 70.3% below the Drug Manufacturers industry median of 164.38. Aurora Optoelectronics Co's overall GF Score™ is 46/100 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 Aurora Optoelectronics Co (SHSE:600666), the current Days Inventory is 48.78 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 Aurora Optoelectronics Co (SHSE:600666) Overvalued in 2026?

Based on GuruFocus' analysis, Aurora Optoelectronics Co stock appears to be overvalued. The current stock price of ¥3.11 is trading 0.3% above its estimated GF Value™ of ¥3.10. GuruFocus considers Aurora Optoelectronics Co to be Fairly Valued.

Key valuation signals for SHSE:600666:

  • Days Inventory: 48.78 (86% below median its 10-year median of 337.13)
  • GF Value™: ¥3.10 vs. price of ¥3.11 (0.3% above fair value)
  • GF Score™: 46/100 with 3 warning signs
  • Industry Position: 70.3% below the Drug Manufacturers median (#69 of 923)

No single metric tells the full story. See the SHSE:600666 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Aurora Optoelectronics Co Business Description

Address No. 5 Haibin Road, Binxi Economic and Technological Development Zone, Heilongjiang Province, Harbin, CHN, 150431
Aurora Optoelectronics Co Ltd is engaged in the manufacturing, processing, and sales of sapphire crystal materials and equipment. Its produces sapphire, 3D glass hot bending machine, Hard and brittle material processing and polishing machine, flat grinding machine, edge grinding machine, milling and carving machine.
46GF Score

Get the complete analysis for SHSE:600666

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

¥3.11
Price
¥3.10
GF Value