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Shares Outstanding (EOP) are shares that have been authorized, issued, and purchased by investors and are held by them.
10-Year Share Buyback Ratio measures the average annual proportion of a company's outstanding shares repurchased over the past ten years. It is calculated as the annualized percentage change in shares outstanding from ten 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. Axcelis Technologies's current 10-Year Share Buyback Ratio was -0.70%.
ACLS's 10-Year Share Buyback Ratio is ranked better than 69.56% of 634
companies
in the Semiconductors industry
Industry Median: -2.5
vs ACLS: -0.70
Axcelis Technologies (NAS:ACLS) 10-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.
Axcelis Technologies 10-Year Share Buyback Ratio Related Terms
ACLS vs UCTT, AXTI, IPGP: 10-Year Share Buyback Ratio Comparison
For the Semiconductor Equipment & Materials subindustry, Axcelis Technologies's 10-Year Share Buyback Ratio, along with its competitors' market caps and 10-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.
Axcelis Technologies 10-Year Share Buyback Ratio vs Semiconductors Industry
For the Semiconductors industry and Technology sector, Axcelis Technologies's 10-Year Share Buyback Ratio distribution charts can be found below:
* The bar in red indicates where Axcelis Technologies's 10-Year Share Buyback Ratio falls into.
Axcelis Technologies 10-Year Share Buyback Ratio Calculation
This is the annualized percentage change in shares outstanding from ten years ago to the current year. The annualized percentage change is calculated with least-square regression based on the eleven 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 10-Year Share Buyback Ratio of -0.70 mean?
Axcelis Technologies (ACLS) has a 10-Year Share Buyback Ratio of -0.70 as of Mar. 2026. The 10-Year Share Buyback Ratio measures the average annual proportion of a company's outstanding shares repurchased over the past ten years. It is calculated as the annualized percentage change in shares outstanding from ten years ago to the current year. View historical data for Axcelis Technologies and its competitors. According to the industry distribution chart, Axcelis Technologies ranks #193 out of 634 companies in the Semiconductors industry, placing it in the top 30.4%.
Is Axcelis Technologies' 10-Year Share Buyback Ratio too high?
Axcelis Technologies' current 10-Year Share Buyback Ratio is -0.70. Based on the distribution chart, Axcelis Technologies ranks #193 out of 634 companies in the Semiconductors industry, which is above the industry midpoint. Overall, Axcelis Technologies has a GF Score™ of 89/100 and is considered Significantly Overvalued, reflecting its overall financial health beyond just this single metric.
How does Axcelis Technologies' 10-Year Share Buyback Ratio compare to UCTT and AXTI?
According to the Semiconductors industry distribution chart, Axcelis Technologies ranks #193 out of 634 companies for 10-Year Share Buyback Ratio. This puts Axcelis Technologies in the upper 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 10-Year Share Buyback Ratio for a Semiconductors company?
A good 10-Year Share Buyback Ratio depends on the Semiconductors industry context. However, 10-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 10-Year Share Buyback Ratio mean?
A high 10-Year Share Buyback Ratio can signal that a stock is expensive relative to its fundamentals. The 10-Year Share Buyback Ratio measures the average annual proportion of a company's outstanding shares repurchased over the past ten years. It is calculated as the annualized percentage change in shares outstanding from ten years ago to the current year. View historical data for Axcelis Technologies and its competitors. Axcelis Technologies's current 10-Year Share 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 Axcelis Technologies stock overvalued right now?
Based on GuruFocus' analysis, Axcelis Technologies (ACLS) is currently considered Significantly Overvalued. The stock's GF Value™ is $87.57, compared to a current price of $131.70 — trading 50.4% above its estimated fair value. The current 10-Year Share Buyback Ratio is -0.70. Axcelis Technologies' overall GF Score™ is 89/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is 10-Year Share Buyback Ratio calculated?
10-Year Share Buyback Ratio is calculated from a company's financial statements. For Axcelis Technologies (ACLS), the current 10-Year Share Buyback Ratio is -0.70 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 Axcelis Technologies (ACLS) Overvalued in 2026?
Based on GuruFocus' analysis, Axcelis Technologies stock appears to be overvalued.
The current stock price of $131.70 is trading 50.4% above its estimated GF Value™ of $87.57.
GuruFocus considers Axcelis Technologies to be Significantly Overvalued.
Key valuation signals for ACLS:
10-Year Share Buyback Ratio: -0.70
GF Value™: $87.57 vs. price of $131.70 (50.4% above fair value)
No single metric tells the full story. See the ACLS stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Axcelis Technologies Inc designs, manufactures, and services ion implantation and other processing equipment used in the fabrication of semiconductor chips. In addition to equipment, the company provides aftermarket lifecycle products and services, including used tools, spare parts, equipment upgrades, maintenance services, and customer training. Geographically, the group has a business presence in North America, Asia Pacific, and Europe, of which key revenue is derived from the Asia Pacific.
89GF Score
Get the complete analysis for ACLS
10-Year Share Buyback Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.
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