BLLN (BillionToOne) Insider Ownership: 0.71 % (As of Aug. 22, 2026)

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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.

BLLN BillionToOne Inc BLLN
15 GF Score
Price $95.05
! 4 Warning Signs
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What is BillionToOne Insider Ownership?

BillionToOne BLLN -0.25% 15 Insider Ownership is 0.71 % as of Aug. 22, 2026. GuruFocus rates BLLN with a GF Score™ of 15/100. The stock has 4 warning signs investors should review.

Insider ownership is the percentage of shares that are owned by company insiders relative to the total shares outstanding. As of today, BillionToOne's insider ownership is 0.71%.

Institutional Ownership is the percentage of shares that are owned by institutions out of the total shares outstanding. As of today, BillionToOne's Institutional Ownership is 25.12%.

Float Percentage Of Total Shares Outstanding is the percentage of float shares relative to the total shares outstanding. As of today, BillionToOne's Float Percentage Of Total Shares Outstanding is 55.40%.

BillionToOne Insider Ownership Historical Data

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The historical data trend for BillionToOne's Insider Ownership 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.

BillionToOne Insider Ownership Chart

BillionToOne Historical Data

The historical data trend for BillionToOne can be seen below:

2025-11-30 2026-01-31 2026-02-28 2026-05-31 2026-06-30 2026-07-31
Insider Ownership 0.80 0.80 0.80 0.80 0.76 0.71
BLLN
15GF Score
BillionToOne Inc BLLN
Insider Ownership is just one metric. See GF Score™, valuation, warning signs, and more.
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BillionToOne Insider Ownership Calculation

The percentage of shares that are owned by company insiders relative to the total shares outstanding.

Frequently Asked Questions Learn more about Insider Ownership →
What does a Insider Ownership of 0.71 % mean?
BillionToOne (BLLN) has a Insider Ownership of 0.71 % as of Aug. 22, 2026. Insider ownership equals the percent of shares owned by company insiders relative to total shares. View historical data on BillionToOne and its competitors.
Is BillionToOne's Insider Ownership too high?
BillionToOne's current Insider Ownership is 0.71 %. Overall, BillionToOne has a GF Score™ of 15/100, reflecting its overall financial health beyond just this single metric.
How does BillionToOne's Insider Ownership compare to TWST and SHC?
BillionToOne's Insider Ownership of 0.71 % can be compared against companies in the Medical Diagnostics & Research industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Insider Ownership for a Medical Diagnostics & Research company?
A good Insider Ownership depends on the Medical Diagnostics & Research industry context. However, Insider Ownership 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 Insider Ownership mean?
A high Insider Ownership can signal that a stock is expensive relative to its fundamentals. Insider ownership equals the percent of shares owned by company insiders relative to total shares. View historical data on BillionToOne and its competitors. BillionToOne's current Insider Ownership is 0.71 %. 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 Insider Ownership of 0.71 %. The current Insider Ownership is 0.71 %. BillionToOne's overall GF Score™ is 15/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Insider Ownership calculated?
Insider Ownership is calculated from a company's financial statements. For BillionToOne (BLLN), the current Insider Ownership is 0.71 % as of Aug. 22, 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 Business Description

Address 1035 O’Brien Drive, Menlo Park, CA, USA, 94025
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.
15GF Score

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