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.
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.
Shares Outstanding (EOP) are shares that have been authorized, issued, and purchased by investors and are held by them.
6-Month Share Buyback Ratio measures the proportion of a company's outstanding shares repurchased over the past six months, calculated as the percentage change in shares outstanding from two quarters ago to the current quarter. A positive ratio may indicates share buybacks over the period, while a zero or negative ratio suggests no buybacks or potential share issuance. Rio Tinto's current 6-Month Share Buyback Ratio was -0.09%.
Rio Tinto (OTCPK:RTPPF) 6-Month Share Buyback Ratio Explanation
A positive ratio may indicates share buybacks over the period, while a zero or negative ratio suggests no buybacks or potential share issuance.
Be Aware
Investors usually like share buybacks. But as pointed by Warren Buffett, only if a company buys back shares at the prices below the stock's intrinsic value, it rewards remaining shareholders. If a company buys its overvalued stocks back, it destroys shareholder value.
Rio Tinto 6-Month Share Buyback Ratio Related Terms
Rio Tinto 6-Month Share Buyback Ratio Competitor Comparison
For the Other Industrial Metals & Mining subindustry, Rio Tinto's 6-Month Share Buyback Ratio, along with its competitors' market caps and 6-Month Share Buyback 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.
Rio Tinto 6-Month Share Buyback Ratio vs Metals & Mining Industry
For the Metals & Mining industry and Basic Materials sector, Rio Tinto's 6-Month Share Buyback Ratio distribution charts can be found below:
* The bar in red indicates where Rio Tinto's 6-Month Share Buyback Ratio 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.
What does a 6-Month Share Buyback Ratio of -0.09 mean?
Rio Tinto (RTPPF) has a 6-Month Share Buyback Ratio of -0.09 as of Jun. 2026. The 6-Month Share Buyback Ratio measures the proportion of a company's outstanding shares repurchased over the past six months, calculated as the percentage change in shares outstanding from two quarters ago to the current quarter. View historical data for Rio Tinto and its competitors.
Is Rio Tinto's 6-Month Share Buyback Ratio too high?
Rio Tinto's current 6-Month Share Buyback Ratio is -0.09. Overall, Rio Tinto has a GF Score™ of 74/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Rio Tinto's 6-Month Share Buyback Ratio compare to competitors?
Rio Tinto's 6-Month Share Buyback Ratio of -0.09 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 6-Month Share Buyback Ratio for a Metals & Mining company?
A good 6-Month Share Buyback Ratio depends on the Metals & Mining industry context. However, 6-Month Share 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 6-Month Share Buyback Ratio mean?
A high 6-Month Share Buyback Ratio can signal that a stock is expensive relative to its fundamentals. The 6-Month Share Buyback Ratio measures the proportion of a company's outstanding shares repurchased over the past six months, calculated as the percentage change in shares outstanding from two quarters ago to the current quarter. View historical data for Rio Tinto and its competitors. Rio Tinto's current 6-Month Share Buyback Ratio is -0.09. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Rio Tinto stock overvalued right now?
Based on GuruFocus' analysis, Rio Tinto (RTPPF) is currently considered Significantly Overvalued. The stock's GF Value™ is $74.52, compared to a current price of $98.24 — trading 31.8% above its estimated fair value. The current 6-Month Share Buyback Ratio is -0.09. Rio Tinto's overall GF Score™ is 74/100 with 7 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is 6-Month Share Buyback Ratio calculated?
6-Month Share Buyback Ratio is calculated from a company's financial statements. For Rio Tinto (RTPPF), the current 6-Month Share Buyback Ratio is -0.09 as of Jun. 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 Rio Tinto (RTPPF) Overvalued in 2026?
Based on GuruFocus' analysis, Rio Tinto stock appears to be overvalued.
The current stock price of $98.24 is trading 31.8% above its estimated GF Value™ of $74.52.
GuruFocus considers Rio Tinto to be Significantly Overvalued.
Key valuation signals for RTPPF:
6-Month Share Buyback Ratio: -0.09
GF Value™: $74.52 vs. price of $98.24 (31.8% above fair value)
No single metric tells the full story. See the RTPPF stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Rio Tinto is a global diversified miner. Iron ore is its major commodity, with lesser contributions from copper and aluminum. Lithium, diamonds, gold, and industrial minerals are more minor contributors. The 1995 merger of RTZ and CRA, via a dual-listed structure, created the present-day company. The two operate as a single business entity, with shareholders in each company having equivalent economic and voting rights. Major assets included the Pilbara iron ore operations, a 30% stake in the Escondida copper mine, 66%-ownership of the Oyu Tolgoi copper mine in Mongolia, the Weipa and Gove bauxite mines in Australia, and six hydro-powered aluminum smelters in Canada.
74GF Score
Get the complete analysis for RTPPF
6-Month Share Buyback Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
Quick Browse
Personalize
Premium Gurus 
Create New Portfolio
RTPPF has been successfully added to your 
