Shanghai Serum Bio Technology Co (SHSE:688163) Days Inventory: 548.53 (As of Mar. 2026) — 15% 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:688163 Shanghai Serum Bio Technology Co Ltd SHSE:688163
72 GF Score
Price ¥32.68
GF Value ¥24.94
Valuation Significantly Overvalued
! 3 Warning Signs
View Full Analysis

What is Shanghai Serum Bio Technology Co Days Inventory?

Shanghai Serum Bio Technology Co SHSE:688163 +4.91% 72 Days Inventory is 548.53 as of Mar. 2026, which is 15% below its 10-year median of 644.10. GuruFocus rates SHSE:688163 with a GF Score™ of 72/100 and a GF Value™ of ¥24.94 (Significantly Overvalued). The stock has 3 warning signs investors should review. Among 637 Biotechnology companies, Shanghai Serum Bio Technology Co ranks worse than 74.25% on this metric.

Days Inventory is also known as Days Sales of Inventory (DSI). Shanghai Serum Bio Technology Co's Average Total Inventories for the three months ended in Mar. 2026 was ¥44.5 Mil. Shanghai Serum Bio Technology Co's Cost of Goods Sold for the three months ended in Mar. 2026 was ¥7.4 Mil. Hence, Shanghai Serum Bio Technology Co's Days Inventory for the three months ended in Mar. 2026 was 548.53.

The historical rank and industry rank for Shanghai Serum Bio Technology Co's Days Inventory or its related term are showing as below:

SHSE:688163' s Days Inventory Range Over the Past 10 Years
Min: 362.13   Med: 644.1   Max: 1029.68
Current: 362.13

During the past 13 years, Shanghai Serum Bio Technology Co's highest Days Inventory was 1029.68. The lowest was 362.13. And the median was 644.10.

SHSE:688163's Days Inventory is ranked worse than
74.25% of 637 companies
in the Biotechnology industry
Industry Median: 181.41 vs SHSE:688163: 362.13

Shanghai Serum Bio Technology Co's Days Inventory declined from Mar. 2025 (641.93) to Mar. 2026 (548.53).

Inventory Turnover measures how fast the company turns over its inventory within a year. Shanghai Serum Bio Technology Co's Inventory Turnover for the three months ended in Mar. 2026 was 0.17.

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. Shanghai Serum Bio Technology Co's Inventory-to-Revenue for the three months ended in Mar. 2026 was 1.64.


Shanghai Serum Bio Technology Co  (SHSE:688163) 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.

Shanghai Serum Bio Technology 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.

Shanghai Serum Bio Technology 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.


Shanghai Serum Bio Technology Co Days Inventory Related Terms


Shanghai Serum Bio Technology Co Days Inventory Historical Data

* Premium members only.

The historical data trend for Shanghai Serum Bio Technology 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.

Shanghai Serum Bio Technology Co Days Inventory Chart

Shanghai Serum Bio Technology 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 530.00 669.38 392.30 375.59 366.90

Shanghai Serum Bio Technology 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 641.93 250.14 247.88 725.16 548.53

SHSE:688163 vs VRTX, REGN, RVMD: Days Inventory Comparison

For the Biotechnology subindustry, Shanghai Serum Bio Technology 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.


Shanghai Serum Bio Technology Co Days Inventory vs Biotechnology Industry

For the Biotechnology industry and Healthcare sector, Shanghai Serum Bio Technology Co's Days Inventory distribution charts can be found below:

* The bar in red indicates where Shanghai Serum Bio Technology Co's Days Inventory falls into.


SHSE:688163
72GF Score
Shanghai Serum Bio Technology Co Ltd SHSE:688163
Days Inventory is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Shanghai Serum Bio Technology Co Days Inventory Calculation

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

Shanghai Serum Bio Technology 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
=( (43.275 + 43.031) / 2 ) / 42.929*365
=43.153 / 42.929*365
=366.90

Shanghai Serum Bio Technology 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
=( (43.031 + 46.045) / 2 ) / 7.409*365 / 4
=44.538 / 7.409*365 / 4
=548.53

* 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 548.53 mean?
Shanghai Serum Bio Technology Co (SHSE:688163) has a Days Inventory of 548.53 as of Mar. 2026. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on Shanghai Serum Bio Technology Co and its competitors. This is 15% below median its historical median of 644.10. Over the past decade, Shanghai Serum Bio Technology Co's Days Inventory has ranged from 362.13 to 1,029.68. According to the industry distribution chart, Shanghai Serum Bio Technology Co ranks #473 out of 637 companies in the Biotechnology industry, placing it in the top 74.3%.
Is Shanghai Serum Bio Technology Co's Days Inventory too high?
Shanghai Serum Bio Technology Co's current Days Inventory of 548.53 is 15% below median its 10-year median of 644.10. Over the past 10 years, this metric has ranged from a low of 362.13 to a high of 1,029.68. The Biotechnology industry median Days Inventory is 181.41. Shanghai Serum Bio Technology Co's value of 548.53 is 202.4% above this industry median. Based on the distribution chart, Shanghai Serum Bio Technology Co ranks #473 out of 637 companies in the Biotechnology industry, which is below the industry midpoint. Overall, Shanghai Serum Bio Technology Co has a GF Score™ of 72/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Shanghai Serum Bio Technology Co's Days Inventory compare to VRTX and REGN?
According to the Biotechnology industry distribution chart, Shanghai Serum Bio Technology Co ranks #473 out of 637 companies for Days Inventory. This places Shanghai Serum Bio Technology Co in the lower half of its industry. The industry median Days Inventory is 181.41. Shanghai Serum Bio Technology Co's value of 548.53 is 202.4% above this benchmark. Historically, Shanghai Serum Bio Technology Co's own Days Inventory has ranged from 362.13 to 1,029.68 over the past decade. While the company's 10-year median is 644.10 vs. the industry median of 181.41, Shanghai Serum Bio Technology Co 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 Biotechnology company?
The median Days Inventory among Biotechnology companies is 181.41, based on 637 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. Shanghai Serum Bio Technology Co's current Days Inventory of 548.53 is 202.4% 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 Shanghai Serum Bio Technology Co and its competitors. For the Biotechnology industry, the median Days Inventory is 181.41 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Shanghai Serum Bio Technology Co's current Days Inventory is 548.53, which is 15% below median its own 10-year median of 644.10. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Shanghai Serum Bio Technology Co stock overvalued right now?
Based on GuruFocus' analysis, Shanghai Serum Bio Technology Co (SHSE:688163) is currently considered Significantly Overvalued. The stock's GF Value™ is ¥24.94, compared to a current price of ¥32.68 — trading 31% above its estimated fair value. The current Days Inventory is 548.53, which is 15% below median its 10-year median of 644.10 and 202.4% above the Biotechnology industry median of 181.41. Shanghai Serum Bio Technology Co's overall GF Score™ is 72/100 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 Shanghai Serum Bio Technology Co (SHSE:688163), the current Days Inventory is 548.53 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 Shanghai Serum Bio Technology Co (SHSE:688163) Overvalued in 2026?

Based on GuruFocus' analysis, Shanghai Serum Bio Technology Co stock appears to be overvalued. The current stock price of ¥32.68 is trading 31% above its estimated GF Value™ of ¥24.94. GuruFocus considers Shanghai Serum Bio Technology Co to be Significantly Overvalued.

Key valuation signals for SHSE:688163:

  • Days Inventory: 548.53 (15% below median its 10-year median of 644.10)
  • GF Value™: ¥24.94 vs. price of ¥32.68 (31% above fair value)
  • GF Score™: 72/100 with 3 warning signs
  • Industry Position: 202.4% above the Biotechnology median (#473 of 637)

No single metric tells the full story. See the SHSE:688163 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Shanghai Serum Bio Technology Co Business Description

Address No. 1288, Huaqing Road, Qingpu District, Shanghai, CHN, 201707
Shanghai Serum Bio Technology Co Ltd is engaged in the research, development, production and sales of preventive and therapeutic drugs in the field of biotoxins and biosafety.
72GF Score

Get the complete analysis for SHSE:688163

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

¥32.68
Price
¥24.94
GF Value