POSC (Positron) PB Ratio: (As of Sep. 15, 2026)

Author: Vera Yuan Vera Yuan
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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.
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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.

POSC Positron Corp POSC
22 GF Score
Price $1.79
GF Value $0.22
Valuation Significantly Overvalued
! 6 Warning Signs
View Full Analysis

What is Positron PB Ratio?

The PB Ratio, or Price-to-Book ratio, or Price/Book, is a financial ratio used to compare a company's market price to its Book Value per Share. As of today (2026-09-15), Positron's share price is $1.79. Positron's Book Value per Share for the quarter that ended in Jun. 2026 was $-0.02. Hence, Positron's PB Ratio of today is .

The historical rank and industry rank for Positron's PB Ratio or its related term are showing as below:

During the past 13 years, Positron's highest PB Ratio was 389.00. The lowest was 34.09. And the median was 207.39.

POSC's PB Ratio is not ranked *
in the Medical Devices & Instruments industry.
Industry Median: 2.09
* Ranked among companies with meaningful PB Ratio only.

During the past 13 years, the highest 3-Year average Book Value Per Share Growth Rate of Positron was 73.80% per year. The lowest was -62.20% per year. And the median was 26.10% per year.

Back to Basics: PB Ratio


Positron  (OTCPK:POSC) PB Ratio Explanation

Unlike valuation ratios relative to the earning power such as PE Ratio, PE Ratio without NRI, PS Ratio, Price-to-Operating-Cash-Flow , or Price-to-Free-Cash-Flow, the PB Ratio measures the valuation of the stock relative to the underlying asset of the company.

The PB Ratio works the best for the businesses that earn most of their profit from their assets, e.g. banks and insurance companies.


Be Aware

Some businesses have very light assets, such as software companies or insurance agencies. The PB Ratio does not work well for these companies. Some companies even have negative equity, so the PB Ratio cannot be applied to them.


Positron PB Ratio Related Terms


Positron PB Ratio Historical Data

* Premium members only.

The historical data trend for Positron's PB Ratio 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.

Positron PB Ratio Chart

Positron Annual Data
Trend Dec07 Dec08 Dec09 Dec10 Dec11 Dec12 Dec13 Dec14 Dec24 Dec25
PB Ratio
Get a 7-Day Free Trial Premium Member Only Premium Member Only 0.00 0.00 0.00 0.00 37.95

Positron Quarterly Data
Jun12 Sep12 Dec12 Mar13 Jun13 Sep13 Dec13 Mar14 Jun14 Sep14 Dec14 Mar15 Jun15 Sep15 Dec24 Mar25 Jun25 Dec25 Mar26 Jun26
PB Ratio 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 0.00 0.00 37.95 347.60 0.00

POSC vs XTNT, COCH, SRTS: PB Ratio Comparison

For the Medical Devices subindustry, Positron's PB Ratio, along with its competitors' market caps and PB Ratio 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.


Positron PB Ratio vs Medical Devices & Instruments Industry

For the Medical Devices & Instruments industry and Healthcare sector, Positron's PB Ratio distribution charts can be found below:

* The bar in red indicates where Positron's PB Ratio falls into.


POSC
22GF Score
Positron Corp POSC
PB Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Positron PB Ratio Calculation

The PB Ratio, or Price-to-Book ratio, or Price/Book, is a financial ratio used to compare a company's market price to its Book Value per Share. It is a ratio widely used to value stocks.

Positron's PB Ratio for today is calculated as follows:

PB Ratio=Share Price/Book Value per Share (Q: Jun. 2026)
=1.79/-0.02
=

* 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.

It can also be calculated from the numbers for the whole company:

A closely related ratio is called Price-to-Tangible-Book. The difference between Price-to-Tangible-Book and PB Ratio is that book value other than intangibles are used in the calculation.

Is Positron (POSC) Overvalued in 2026?

Based on GuruFocus' analysis, Positron stock appears to be overvalued. The current stock price of $1.79 is trading 713.6% above its estimated GF Value™ of $0.22. GuruFocus considers Positron to be Significantly Overvalued.

Key valuation signals for POSC:

  • PB Ratio:
  • GF Value™: $0.22 vs. price of $1.79 (713.6% above fair value)
  • GF Score™: 22/100 with 6 warning signs

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


Positron Business Description

Address 3784 Commerce Court, Suite 100, North Tonawanda, NY, USA, 14120
Positron Corp is a medical technology company engaged in the co-development, manufacture, and sale of PET and PET-CT imaging systems, delivering high-performance, cost-effective molecular imaging solutions that empower healthcare providers to improve the diagnosis and treatment of cardiovascular disease and other critical conditions. By combining proprietary PET and PET-CT systems with comprehensive clinical and technical support, flexible financing, & a focus on operational efficiency, Positron makes advance diagnostic imaging more accessible & sustainable for hospitals, outpatient centers, & physician practices. The company focused on advancing positron emission tomography imaging through the development, manufacture, & commercialization of PET & PET-computed tomography imaging systems.
22GF Score

Get the complete analysis for POSC

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

$1.79
Price
$0.22
GF Value