What is the 13F Pro Quality Score for ACLS?

13F Pro ranks AXCELIS TECHNOLOGIES INC (ACLS) on the 13F Pro Quality Score, a 0–100 composite of 32 fundamental signals including return on invested capital, free cash flow consistency, balance-sheet strength, earnings quality, growth durability, and valuation discipline. The score refreshes after each 10-K and 10-Q filing on SEC EDGAR. View ACLS's current score at https://13fpro.ai/company/ACLS (free sign-up required for the full ranking).

Which hedge funds own the most ACLS stock?

Based on the most recent Form 13F-HR filings on SEC EDGAR, the largest reported institutional holders of ACLS include BlackRock,, FMR, VANGUARD PORTFOLIO MANAGEMENT. Holdings are reported quarterly within 45 days of quarter-end and updated on https://13fpro.ai/company/ACLS as soon as new 13F filings post.

Where does 13F Pro source ACLS data?

All AXCELIS TECHNOLOGIES INC fundamentals and ownership data come directly from SEC EDGAR. AXCELIS TECHNOLOGIES INC files with the SEC under CIK 1113232. 13F Pro ingests XBRL financial facts from 10-K and 10-Q filings, Form 13F-HR institutional holdings, and Form 4 insider transactions, with no third-party rewrites or estimates.

What sector is ACLS in?

AXCELIS TECHNOLOGIES INC (ACLS) is classified in the Industrials sector. 13F Pro publishes sector-level fund flow analysis and quality leaders at https://13fpro.ai/research/sector/industrials.

How often is ACLS research updated on 13F Pro?

ACLS's fundamentals refresh within hours of each new 10-K or 10-Q filing on SEC EDGAR. Institutional ownership updates after each quarterly 13F filing window. Insider transactions update after each Form 4 filing. The 13F Pro Quality Score recalculates after every fundamentals refresh.

AXCELIS TECHNOLOGIES INC(ACLS)Stock Analysis

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SEC EDGAR: CIK 1113232 ACLS stock profile & AI dashboard →

13F Pro Quality Score

37.7/100

Rank #2,226 of 2,961 stocks

View Industrials peers →

Rankings refresh quarterly once 80% of peers have filed (~45 days after quarter-end). Next update: ~Nov 14, 2026.

Revenue Growth

7.9/100

Profitability

51.6/100

Balance Sheet

76.7/100

Earnings Quality

31.8/100

Free Cash Flow

49.2/100

Institutional Flow

10.8/100

Revenue Scale

47.6/100

Dilution Risk

36.4/100

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Why ACLS Scores 38/100

exact factor attribution · 2026-09-11

ACLS's composite is driven by capital efficiency, held back by revenue growth and institutional flow. Bars show each factor's exact push vs. a median company, using the same weights the ranking engine applies.

Capital efficiency

+2.7 pts

77th pct

Profitability

+0.2 pts

52th pct

Free cash flow

-0.1 pts

49th pct

Scale

-0.4 pts

48th pct

Shareholder dilution

-0.7 pts

36th pct

Earnings quality

-1.8 pts

32th pct

Earnings growth

-1.9 pts

13th pct

Institutional flow

-2.0 pts

11th pct

Revenue growth

-8.4 pts

8th pct

Factor percentiles are cross-sectional ranks across the ~2,800-stock scored universe, computed from SEC EDGAR filings. Not investment advice.

ACLS Stock Analysis & AI Quality Score

Data updated 2026-09-11

AI stock analysis and institutional research for AXCELIS TECHNOLOGIES INC (ACLS), a Industrials sector company. 13F Pro's AI-powered ranking engine scores ACLS at 37.7/100 on a 32-signal composite quality model, placing it at rank #2,226 of 2,961 stocks — the bottom half of the AI-ranked universe. ACLS scores in the top quartile across balance sheet strength (76.7). Areas of concern include revenue growth (7.9) and institutional flow (10.8), which score below median versus the broader universe. Shareholder dilution risk is elevated at 36.4/100, reflecting ongoing share issuance or stock-based compensation. Based on the latest XBRL financial filings (Q2 2026), AXCELIS TECHNOLOGIES INC reports quarterly revenue of $215.2M, net income of $23.3M, an operating margin of 9.4%. Top institutional holders of ACLS by reported 13-F value include BlackRock, FMR, VANGUARD PORTFOLIO MANAGEMENT, based on the most recent SEC filings. ACLS trades on the Nasdaq exchange and files with the SEC under CIK 1113232. 13F Pro's AI research platform runs 10 specialized AI analysts — value, growth, momentum, macro, and activist specialists — that debate ACLS daily and publish AI-generated analysis with cited SEC sources. The platform aggregates historical XBRL financial facts, 10-Q and 10-K filings, insider Form 4 transactions, and institutional 13-F holdings for AXCELIS TECHNOLOGIES INC directly from SEC EDGAR. AXCELIS TECHNOLOGIES INC's 13F Pro composite quality score has ranged between 38 and 77 since 2021, currently 37.7 — a declining long-term trajectory across 67 quarterly and live scoring snapshots.

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Fun facts about AXCELIS TECHNOLOGIES INC

Quirks, history, and lore behind ACLS — the kind of stuff that makes a stock memorable.

1
The Basics
U.S. semiconductor equipment company · small-cap · listed on Nasdaq · headquartered on the Massachusetts North Shore.
2
The Numbers
Annual revenue in the range of roughly $1 billion, with customer concentration so high that a handful of chipmakers account for the lion's share of sales.
3
The History
The company traces its roots to Eaton Corporation's semiconductor equipment division, which was spun off in the late 1990s to stand on its own.
4
The Secret
It occupies a near-monopoly niche: making the machines that fire beams of charged atoms into silicon wafers — a process called ion implantation — which every modern chip needs.
5
The Lore
When the electric vehicle and power electronics boom hit, demand for its tools surged because silicon carbide chips — used in EV powertrains — require especially intense ion implantation.
6
The Giveaway
Its ticker is ACLS and its name literally means 'without a key' in Greek — fitting for a company that quietly unlocks the performance of every chip on the planet.

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Revenue

Q2 2026

$215.2M

Net Income

Q2 2026

$23.3M

Free Cash Flow

Q2 2026

$14.8M

Operating Margin

Q2 2026

9.4%

ROIC

Q2 2026

7.6%

Period

Revenue & Net Income

Earnings Per Share

Key Financials Over Time

Export Financial Table · Pro

Revenue

-17.6% YoY

$839.0MFY 2025

FY22 $920.0MFY23 $1.13BFY24 $1.02BFY25 $839.0M

Net Income

-40.2% YoY

$120.2MFY 2025

FY22 —FY23 $246.3MFY24 $201.0MFY25 $120.2M

Operating Income

-43.4% YoY

$119.3MFY 2025

FY22 $212.4MFY23 $265.8MFY24 $210.8MFY25 $119.3M

EPS (Diluted)

-38.2% YoY

$3.80FY 2025

FY22 $5.46FY23 $7.43FY24 $6.15FY25 $3.80

Total Assets

+0.9% YoY

$1.36BFY 2025

FY22 $1.01BFY23 $1.28BFY24 $1.35BFY25 $1.36B

Op. Cash Flow

-16.0% YoY

$118.3MFY 2025

FY22 $215.6MFY23 $156.9MFY24 $140.8MFY25 $118.3M

Free Cash Flow

-16.8% YoY

$107.0MFY 2025

FY22 $204.9MFY23 $136.2MFY24 $128.6MFY25 $107.0M

Metric	FY 2025	FY 2024	FY 2023	FY 2022	FY 2021	FY 2020
Revenue	$839.0M -17.6%	$1.02B -10.0%	$1.13B +22.9%	$920.0M +38.9%	$662.4M +39.6%	$474.6M
Net Income	$120.2M -40.2%	$201.0M -18.4%	$246.3M	—	—	—
Operating Income	$119.3M -43.4%	$210.8M -20.7%	$265.8M +25.2%	$212.4M +66.8%	$127.3M +119.4%	$58.0M
EPS (Diluted)	$3.80 -38.2%	$6.15 -17.2%	$7.43 +36.1%	$5.46 +89.6%	$2.88 +97.3%	$1.46
Total Assets	$1.36B +0.9%	$1.35B +5.2%	$1.28B +26.5%	$1.01B +34.6%	$753.2M +20.6%	$624.6M
Operating Cash Flow	$118.3M -16.0%	$140.8M -10.2%	$156.9M -27.2%	$215.6M +43.6%	$150.2M +115.5%	$69.7M
Free Cash Flow	$107.0M -16.8%	$128.6M -5.6%	$136.2M -33.5%	$204.9M +44.9%	$141.5M +127.2%	$62.3M

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Available Research

13F Pro tracks comprehensive data for AXCELIS TECHNOLOGIES INC including:

SEC EDGAR filings (10-K, 10-Q, 8-K)

XBRL financial facts (revenue, EPS, margins)

Insider transactions (Form 4)

Institutional 13F holdings

Quality rankings (32 signals)

AI analyst debates & daily meetings

Historical financial trends

Peer comparison & sector analysis

Top Institutional Holders of ACLS

BlackRock, Inc.
$952.8M5,029,462 sh
FMR LLC
$781.7M4,125,902 sh
VANGUARD PORTFOLIO MANAGEMENT LLC
$469.6M2,478,878 sh
VANGUARD CAPITAL MANAGEMENT LLC
$262.7M1,386,518 sh
STATE STREET CORP
$233.2M1,231,109 sh
VICTORY CAPITAL MANAGEMENT INC
$214.8M1,134,007 sh
REINHART PARTNERS, LLC.
$175.9M928,660 sh
GEODE CAPITAL MANAGEMENT, LLC
$158.0M833,607 sh
BNP Paribas Asset Management Holding S.A.
$152.2M803,151 sh
DIMENSIONAL FUND ADVISORS LP
$134.3M709,266 sh

Fund	Value	Shares
BlackRock, Inc.	$952.8M	5,029,462
FMR LLC	$781.7M	4,125,902
VANGUARD PORTFOLIO MANAGEMENT LLC	$469.6M	2,478,878
VANGUARD CAPITAL MANAGEMENT LLC	$262.7M	1,386,518
STATE STREET CORP	$233.2M	1,231,109
VICTORY CAPITAL MANAGEMENT INC	$214.8M	1,134,007
REINHART PARTNERS, LLC.	$175.9M	928,660
GEODE CAPITAL MANAGEMENT, LLC	$158.0M	833,607
BNP Paribas Asset Management Holding S.A.	$152.2M	803,151
DIMENSIONAL FUND ADVISORS LP	$134.3M	709,266

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Is ACLS a good stock to buy?

13F Pro's AI-powered analysis of AXCELIS TECHNOLOGIES INC (ACLS) draws on SEC EDGAR-sourced fundamentals, institutional 13F holdings, and insider Form 4 transactions in the Industrials sector (listed on Nasdaq). The 32-signal AI Quality Score, current rank, and full bull/bear verdict for ACLS are available on the ACLS stock profile dashboard — with the same data, AI insights, ratios, and institutional activity refreshed after every 10-K, 10-Q, 13F, and Form 4 filing. ACLS is classified as a mid company.

Which hedge funds own ACLS?

Institutional investors are required to disclose their holdings quarterly via SEC Form 13F. 13F Pro aggregates these filings to show which hedge funds, mutual funds, and asset managers are buying or selling ACLS. Combined with insider transaction data from Form 4 filings and AI-powered analysis from 10 specialized research agents, 13F Pro provides a comprehensive view of AXCELIS TECHNOLOGIES INC's investment landscape.