STACF (Portex Minerals) Shares Buyback Ratio %: -0.70 (As of Jul. 31, 2026)

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.

What is Portex Minerals Shares Buyback Ratio %?

Portex Minerals STACF Shares Buyback Ratio % is -0.70 as of Jul. 31, 2026.

Shares Outstanding (EOP) are shares that have been authorized, issued, and purchased by investors and are held by them.

GuruFocus calculates shares buyback ratio using previous shares outstanding minus the current shares outstanding, and then divides by previous shares outstanding. Portex Minerals's current shares buyback ratio was -0.70%.


Portex Minerals Shares Buyback Ratio % Related Terms


Portex Minerals Shares Buyback Ratio % Historical Data

* Premium members only.

The historical data trend for Portex Minerals's Shares Buyback 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.

Portex Minerals Shares Buyback Ratio % Chart

Portex Minerals Annual Data
Trend Sep07 Sep08 Sep09 Sep10 Sep11 Sep12 Sep13 Sep14 Sep15
Shares Buyback Ratio %
Get a 7-Day Free Trial Premium Member Only -115.67 -55.43 -48.59 -215.44 -0.70

Portex Minerals Quarterly Data
Sep11 Dec11 Mar12 Jun12 Sep12 Dec12 Mar13 Jun13 Sep13 Dec13 Mar14 Jun14 Sep14 Dec14 Mar15 Jun15 Sep15 Dec15 Mar16 Jun16
Shares Buyback 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 -0.70 0.00 0.00 0.00

Portex Minerals Shares Buyback Ratio % Calculation

Portex Minerals's Shares Buyback Ratio for the fiscal year that ended in Sep. 2015 is calculated as

Shares Buyback Ratio=(Shares Outstanding (EOP) (A: Sep. 2014 ) - Shares Outstanding (EOP) (A: Sep. 2015 )) / Shares Outstanding (EOP) (A: Sep. 2014 )
=(204.984 - 206.419) / 204.984
=-0.70%

Portex Minerals's Shares Buyback Ratio for the quarter that ended in Jun. 2016 is calculated as

Shares Buyback Ratio=(Shares Outstanding (EOP) (A: Mar. 2016 ) - Shares Outstanding (EOP) (A: Jun. 2016 )) / Shares Outstanding (EOP) (A: Mar. 2016 )
=(206.419 - 206.419) / 206.419
=0.00%

* 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 Shares Buyback Ratio % →
What does a Shares Buyback Ratio % of -0.70 mean?
Portex Minerals (STACF) has a Shares Buyback Ratio % of -0.70 as of Jul. 31, 2026. Share buyback ratio is the percent change of a company's shares outstanding from two periods. View historical data on Portex Minerals and its competitors.
Is Portex Minerals' Shares Buyback Ratio % too high?
Portex Minerals' current Shares Buyback Ratio % is -0.70.
How does Portex Minerals' Shares Buyback Ratio % compare to competitors?
Portex Minerals' Shares Buyback Ratio % of -0.70 can be compared against companies in the Metals & Mining industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Shares Buyback Ratio % for a Metals & Mining company?
A good Shares Buyback Ratio % depends on the Metals & Mining industry context. However, Shares Buyback Ratio % 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 Shares Buyback Ratio % mean?
A high Shares Buyback Ratio % can signal that a stock is expensive relative to its fundamentals. Share buyback ratio is the percent change of a company's shares outstanding from two periods. View historical data on Portex Minerals and its competitors. Portex Minerals's current Shares Buyback Ratio % is -0.70. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Portex Minerals stock overvalued right now?
Portex Minerals (STACF) has a current Shares Buyback Ratio % of -0.70. The current Shares Buyback Ratio % is -0.70. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Shares Buyback Ratio % calculated?
Shares Buyback Ratio % is calculated from a company's financial statements. For Portex Minerals (STACF), the current Shares Buyback Ratio % is -0.70 as of Jul. 31, 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.

Portex Minerals Business Description

Address 2 Bloor Street West, Suite 2000, Toronto, ON, CAN, M4W 3E2
Portex Minerals Inc is a mineral exploration and development company focused on the acquisition and development of mining projects in Europe and other low-risk jurisdictions.