BillionToOneBLLN +2.04%13 Days Inventory is 57.26 as of Mar. 2026, which is 19% above its 10-year median of 48.28. GuruFocus rates BLLN with a GF Score™ of 13/100. The stock has 5 warning signs investors should review. Among 176 Medical Diagnostics & Research companies, BillionToOne ranks better than 53.98% on this metric.
Days Inventory is also known as Days Sales of Inventory (DSI). BillionToOne's Average Total Inventories for the
three
months ended in Mar. 2026 was $18.4 Mil. BillionToOne's Cost of Goods Sold for the
three
months ended in Mar. 2026 was $29.3 Mil.
Hence, BillionToOne's Days Inventory for the
three
months ended in Mar. 2026 was 57.26.
The historical rank and industry rank for BillionToOne's Days Inventory or its related term are showing as below:
BLLN'
s Days Inventory Range Over the Past 10 Years
Min: 40.57 Med: 48.28 Max: 59.02
Current: 59.02
During the past 3 years, BillionToOne's highest Days Inventory was 59.02. The lowest was 40.57. And the median was 48.28.
BLLN's Days Inventory is ranked better than 53.98% of 176
companies
in the Medical Diagnostics & Research industry
Industry Median: 68.88
vs BLLN: 59.02
BillionToOne's Days Inventory
increased
from Mar. 2025 (37.96) to Mar. 2026 (57.26).
It might indicate that BillionToOne's sales slowed down.
Warning Sign:
If a company builds up inventory, it may mean it is having difficulties selling its goods.
Inventory Turnover measures how fast the company turns over its inventory within a year.
BillionToOne's Inventory Turnover for the
three
months ended in Mar. 2026 was 1.59.
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.
BillionToOne's Inventory-to-Revenue for the
three
months ended in Mar. 2026 was 0.17.
BillionToOne (NAS:BLLN) 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.
BillionToOne'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.
BillionToOne'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.
BillionToOne Days Inventory Related Terms
BillionToOne Days Inventory Historical Data
* Premium members only.
The historical data trend for BillionToOne'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.
BLLN vs SHC, VCYT, RDNT: Days Inventory Comparison
For the Diagnostics & Research subindustry, BillionToOne'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.
BillionToOne Days Inventory vs Medical Diagnostics & Research Industry
For the Medical Diagnostics & Research industry and Healthcare sector, BillionToOne's Days Inventory distribution charts can be found below:
* The bar in red indicates where BillionToOne's Days Inventory falls into.
* 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.
BillionToOne (BLLN) has a Days Inventory of 57.26 as of Mar. 2026. Days inventory represents the average amount of days a company holds inventory before selling it. View historical data on BillionToOne and its competitors. This is 19% above median its historical median of 48.28. Over the past decade, BillionToOne's Days Inventory has ranged from 40.57 to 59.02. According to the industry distribution chart, BillionToOne ranks #81 out of 176 companies in the Medical Diagnostics & Research industry, placing it in the top 46%.
Is BillionToOne's Days Inventory too high?
BillionToOne's current Days Inventory of 57.26 is 19% above median its 10-year median of 48.28. Over the past 10 years, this metric has ranged from a low of 40.57 to a high of 59.02. The Medical Diagnostics & Research industry median Days Inventory is 68.88. BillionToOne's value of 57.26 is 16.9% below this industry median. Based on the distribution chart, BillionToOne ranks #81 out of 176 companies in the Medical Diagnostics & Research industry, which is above the industry midpoint. Overall, BillionToOne has a GF Score™ of 13/100, reflecting its overall financial health beyond just this single metric.
How does BillionToOne's Days Inventory compare to SHC and VCYT?
According to the Medical Diagnostics & Research industry distribution chart, BillionToOne ranks #81 out of 176 companies for Days Inventory. This puts BillionToOne in the upper half of its industry. The industry median Days Inventory is 68.88. BillionToOne's value of 57.26 is 16.9% below this benchmark. Historically, BillionToOne's own Days Inventory has ranged from 40.57 to 59.02 over the past decade. While the company's 10-year median is 48.28 vs. the industry median of 68.88, BillionToOne 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 Medical Diagnostics & Research company?
The median Days Inventory among Medical Diagnostics & Research companies is 68.88, based on 176 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. BillionToOne's current Days Inventory of 57.26 is 16.9% 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 BillionToOne and its competitors. For the Medical Diagnostics & Research industry, the median Days Inventory is 68.88 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. BillionToOne's current Days Inventory is 57.26, which is 19% above median its own 10-year median of 48.28. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is BillionToOne stock overvalued right now?
BillionToOne (BLLN) has a current Days Inventory of 57.26. The current Days Inventory is 57.26, which is 19% above median its 10-year median of 48.28 and 16.9% below the Medical Diagnostics & Research industry median of 68.88. BillionToOne's overall GF Score™ is 13/100 with 5 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 BillionToOne (BLLN), the current Days Inventory is 57.26 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.
BillionToOne Inc is a molecular diagnostics company. It offers a portfolio of ultrasensitive tests covering prenatal genetic testing, cancer therapy selection, and response monitoring, which are based on its Quantitative Counting Templates (QCT) molecular counting platform. The company's product portfolio comprises UNITY, a portfolio of prenatal testing products that can conduct fetal risk analysis without requiring a paternal sample; Northstar Select, a ultrasensitive liquid biopsy test that provides insights into appropriate therapies for stage III or IV cancer patients; and Northstar Response, a tissue-free, pan-cancer, liquid biopsy test that measures several genomic loci uniquely methylated in cancer to provide insight into dynamic changes in therapy response.
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