ACLS (Axcelis Technologies) Insider Ownership: 8.89 % (As of Jul. 10, 2026)


ACLS Axcelis Technologies Inc ACLS
89 GF Score
Price $143.35
GF Value $87.54
Valuation Significantly Overvalued
! 4 Warning Signs
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What is Axcelis Technologies Insider Ownership?

Axcelis Technologies ACLS +0.29% 89 Insider Ownership is 8.89 % as of Jul. 10, 2026. GuruFocus rates ACLS with a GF Score™ of 89/100 and a GF Value™ of $87.54 (Significantly Overvalued). The stock has 4 warning signs investors should review.

Insider ownership is the percentage of shares that are owned by company insiders relative to the total shares outstanding. As of today, Axcelis Technologies's insider ownership is 8.89%.

Institutional Ownership is the percentage of shares that are owned by institutions out of the total shares outstanding. As of today, Axcelis Technologies's Institutional Ownership is 119.40%.

Float Percentage Of Total Shares Outstanding is the percentage of float shares relative to the total shares outstanding. As of today, Axcelis Technologies's Float Percentage Of Total Shares Outstanding is 69.24%.

Axcelis Technologies Insider Ownership Historical Data

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The historical data trend for Axcelis Technologies's Insider Ownership 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.

Axcelis Technologies Insider Ownership Chart

Axcelis Technologies Historical Data

The historical data trend for Axcelis Technologies can be seen below:

2025-06-30 2025-07-31 2025-08-31 2025-09-30 2025-10-31 2025-11-30 2026-01-31 2026-02-28 2026-05-31 2026-06-30
Insider Ownership 8.35 8.35 8.35 8.35 8.53 8.65 8.76 8.75 8.90 8.89
ACLS
89GF Score
Axcelis Technologies Inc ACLS
Insider Ownership is just one metric. See GF Score™, valuation, warning signs, and more.
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Axcelis Technologies Insider Ownership Calculation

The percentage of shares that are owned by company insiders relative to the total shares outstanding.

Frequently Asked Questions Learn more about Insider Ownership →
What does a Insider Ownership of 8.89 % mean?
Axcelis Technologies (ACLS) has a Insider Ownership of 8.89 % as of Jul. 10, 2026. Insider ownership equals the percent of shares owned by company insiders relative to total shares. View historical data on Axcelis Technologies and its competitors.
Is Axcelis Technologies' Insider Ownership too high?
Axcelis Technologies' current Insider Ownership is 8.89 %. 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' Insider Ownership compare to UCTT and AXTI?
Axcelis Technologies' Insider Ownership of 8.89 % can be compared against companies in the Semiconductors industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Insider Ownership for a Semiconductors company?
A good Insider Ownership depends on the Semiconductors industry context. However, Insider Ownership 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 Insider Ownership mean?
A high Insider Ownership can signal that a stock is expensive relative to its fundamentals. Insider ownership equals the percent of shares owned by company insiders relative to total shares. View historical data on Axcelis Technologies and its competitors. Axcelis Technologies's current Insider Ownership is 8.89 %. 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 $87.54, compared to a current price of $143.35 — trading 63.8% above its estimated fair value. The current Insider Ownership is 8.89 %. 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 Insider Ownership calculated?
Insider Ownership is calculated from a company's financial statements. For Axcelis Technologies (ACLS), the current Insider Ownership is 8.89 % as of Jul. 10, 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 $143.35 is trading 63.8% above its estimated GF Value™ of $87.54. GuruFocus considers Axcelis Technologies to be Significantly Overvalued.

Key valuation signals for ACLS:

  • Insider Ownership: 8.89 %
  • GF Value™: $87.54 vs. price of $143.35 (63.8% above fair value)
  • GF Score™: 89/100 with 4 warning signs

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 Business Description

Address 108 Cherry Hill Drive, Beverly, MA, USA, 01915
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

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

$143.35
Price
$87.54
GF Value