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National GridNGG +0.30%72 3-Year Share Buyback Ratio is -7.50 as of Mar. 2026. GuruFocus rates NGG with a GF Score™ of 72/100 and a GF Value™ of $50.97 (Significantly Overvalued). The stock has 4 warning signs investors should review. Among 230 Utilities - Regulated companies, National Grid ranks worse than 85.65% on this metric.
Shares Outstanding (EOP) are shares that have been authorized, issued, and purchased by investors and are held by them.
3-Year Share Buyback Ratio measures the average annual proportion of a company's outstanding shares repurchased over the past three years. It is calculated as the annualized percentage change in shares outstanding from three years ago to the current year. A positive ratio may indicate share buybacks over the period, while a zero or negative ratio may reflect no repurchases or potential share issuance. National Grid's current 3-Year Share Buyback Ratio was -7.50%.
The historical rank and industry rank for National Grid's 3-Year Share Buyback Ratio or its related term are showing as below:
NGG'
s 3-Year Share Buyback Ratio Range Over the Past 10 Years
Min: -27.8 Med: -0.2 Max: 5.9
Current: -7.5
During the past 13 years, National Grid's highest 3-Year Share Buyback Ratio was 5.90%. The lowest was -27.80%. And the median was -0.20%.
NGG's 3-Year Share Buyback Ratio is ranked worse than 85.65% of 230
companies
in the Utilities - Regulated industry
Industry Median: -1.45
vs NGG: -7.50
National Grid (NYSE:NGG) 3-Year Share Buyback Ratio Explanation
A negative number means the company might be issuing new shares. A positive number indicates that the company is buying back shares.
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.
National Grid 3-Year Share Buyback Ratio Related Terms
NGG vs NEE, SO, DUK: 3-Year Share Buyback Ratio Comparison
For the Utilities - Regulated Electric subindustry, National Grid's 3-Year Share Buyback Ratio, along with its competitors' market caps and 3-Year 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.
National Grid 3-Year Share Buyback Ratio vs Utilities - Regulated Industry
For the Utilities - Regulated industry and Utilities sector, National Grid's 3-Year Share Buyback Ratio distribution charts can be found below:
* The bar in red indicates where National Grid's 3-Year Share Buyback Ratio falls into.
National Grid 3-Year Share Buyback Ratio Calculation
This is the annualized percentage change in shares outstanding from three years ago to the current year. The annualized percentage change is calculated with expontential compound based on the latest four years of annual data on Shares Outstanding (EOP).
Please click Growth Rate Calculation Example (GuruFocus) to see how GuruFocus calculates Wal-Mart Stores Inc (WMT)'s revenue growth rate. You can apply the same method to get the average dividends per share growth rate.
What does a 3-Year Share Buyback Ratio of -7.50 mean?
National Grid (NGG) has a 3-Year Share Buyback Ratio of -7.50 as of Mar. 2026. The 3-Year Share Buyback Ratio measures the average annual proportion of a company's outstanding shares repurchased over the past three years. It is calculated as the annualized percentage change in shares outstanding from three years ago to the current year. View historical data for National Grid and its competitors. According to the industry distribution chart, National Grid ranks #197 out of 230 companies in the Utilities - Regulated industry, placing it in the top 85.7%.
Is National Grid's 3-Year Share Buyback Ratio too high?
National Grid's current 3-Year Share Buyback Ratio is -7.50. Based on the distribution chart, National Grid ranks #197 out of 230 companies in the Utilities - Regulated industry, which is in the bottom quartile relative to peers. Overall, National Grid has a GF Score™ of 72/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does National Grid's 3-Year Share Buyback Ratio compare to NEE and SO?
According to the Utilities - Regulated industry distribution chart, National Grid ranks #197 out of 230 companies for 3-Year Share Buyback Ratio. This places National Grid in the lower half of its industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good 3-Year Share Buyback Ratio for an Utilities - Regulated company?
A good 3-Year Share Buyback Ratio depends on the Utilities - Regulated industry context. However, 3-Year 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 3-Year Share Buyback Ratio mean?
A high 3-Year Share Buyback Ratio can signal that a stock is expensive relative to its fundamentals. The 3-Year Share Buyback Ratio measures the average annual proportion of a company's outstanding shares repurchased over the past three years. It is calculated as the annualized percentage change in shares outstanding from three years ago to the current year. View historical data for National Grid and its competitors. National Grid's current 3-Year Share Buyback Ratio is -7.50. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is National Grid stock overvalued right now?
Based on GuruFocus' analysis, National Grid (NGG) is currently considered Significantly Overvalued. The stock's GF Value™ is $50.97, compared to a current price of $81.29 — trading 59.5% above its estimated fair value. The current 3-Year Share Buyback Ratio is -7.50. National Grid's overall GF Score™ is 72/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is 3-Year Share Buyback Ratio calculated?
3-Year Share Buyback Ratio is calculated from a company's financial statements. For National Grid (NGG), the current 3-Year Share Buyback Ratio is -7.50 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.
Is National Grid (NGG) Overvalued in 2026?
Based on GuruFocus' analysis, National Grid stock appears to be overvalued.
The current stock price of $81.29 is trading 59.5% above its estimated GF Value™ of $50.97.
GuruFocus considers National Grid to be Significantly Overvalued.
Key valuation signals for NGG:
3-Year Share Buyback Ratio: -7.50
GF Value™: $50.97 vs. price of $81.29 (59.5% above fair value)
No single metric tells the full story. See the NGG stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
National Grid owns and operates the electric transmission system in England and Wales. It sold the bulk of its UK gas transmission business in fiscal 2023 to fund the acquisition of PPL's UK power distribution assets. In the Northeastern United States, it serves electricity and gas customers combined in three states. It also owns regulated transmission electricity networks in the United States, metering services and merchant transmission lines in the UK.
72GF Score
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3-Year Share Buyback Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
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