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Axcelis Technologies Inc

Held by 12 tracked managers as of Q2 2026 · CUSIP ⓘCUSIP: A 9-character ID for one specific security - one share class of one company, or one bond. Tickers can change and can mean different things in different countries; a CUSIP always identifies exactly the same security, which is why filings use it. Guide 054540208 · Sector ⓘGICS sectors: The 11-sector system most investors know (Global Industry Classification Standard): Technology, Health Care, Financials and so on. This site assigns each company a GICS-style sector from its SIC code, with a few hand corrections, so sector pages match the names investors expect. Guide

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In plain English: 12 of the investors we track own this stock. In the latest quarter, 4 of them bought more of it and 8 sold some or all of theirs. That tells you what they did last quarter — not what the stock will do next.

Educational and informational only, not personalized investment advice. Based on public filings that may be delayed or contain errors; verify with the original filings. Disclaimer

Managers holding
12
-1 vs last quarter (like-for-like)
Total value held
$257.39M
Across tracked managers
Average weight ⓘOn average, how big this stock is in the portfolios that own it (its share of each manager's reported portfolio value).
0.0%
Of each manager's book
QoQ value ⓘLike-for-like: only managers that filed both quarters are compared, so a manager filing late (or confidentially) does not look like buying or selling. Includes price changes.
+$60.88M
+31.1% vs last quarter
Net shares bought
-736.1K
Est. net flow -$138.41M
Quarter activity
4 bought · 8 sold
0 new · 1 sold out

Tracked capital in this stock

Total value held (area) and number of managers (line). Dips can mean a large holder filed that quarter confidentially (e.g. Norges Bank in Q1/Q3).

Chart: Tracked capital in this stock

Aggregate buying and selling

Net share change reported each quarter

Chart: Aggregate buying and selling

Who owns ACLS?

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Who owns ACLS? — Q2 2026

Holders ranked by position size, with each one's quarter-over-quarter change.

CSV Excel
Column filters

Numbers accept 1.5M, 2B, 250K. Percent columns take percent (5 = 5%).

# Manager Fund Shares Value ↓ % of their portfolio QoQ Δ shares Δ shares % Est. Δ value ⓘChange in shares × this quarter's price
1 Barrow Hanley Barrow Hanley Mewhinney & Strauss 392.24K $74.31M 0.2% Added +392.2K +688040.4% +$74.30M
2 Boston Partners Boston Partners Global Investors 303.93K $55.65M 0.0% Reduced -36.3K -10.7% -$6.66M
3 Israel Englander Millennium Management 139.24K $26.38M 0.0% Added +126.7K +1011.1% +$24.01M
4 Jeremy Grantham GMO 135.58K $25.69M 0.1% Reduced -199.2K -59.5% -$37.74M
5 David Shaw D.E. Shaw & Co. 133.04K $25.21M 0.0% Reduced -411.4K -75.6% -$77.94M
6 Matthew McLennan First Eagle Investment Management 71.92K $13.63M 0.0% Reduced -28.6K -28.5% -$5.42M
7 Chuck Royce Royce & Associates 65.70K $12.45M 0.1% Reduced -59.6K -47.6% -$11.29M
8 Two Sigma Two Sigma Investments 48.44K $9.18M 0.0% Reduced -149.1K -75.5% -$28.25M
9 Ken Griffin Citadel Advisors 46.24K $8.76M 0.0% Added +41.7K +926.4% +$7.91M
10 LSV Asset Management LSV Asset Management 24.60K $4.66M 0.0% Reduced -404.9K -94.3% -$76.70M
11 Norges Bank Norges Bank Investment Management 4.83K $915.80K 0.0% — — — —
12 Steve Cohen Point72 Asset Management 3.00K $568.35K 0.0% Added +750 +33.3% +$142.09K

Sold out completely this quarter

CSV Excel
Column filters

Numbers accept 1.5M, 2B, 250K. Percent columns take percent (5 = 5%).

Manager Fund Shares sold Value last quarter ↓
Ray Dalio Bridgewater Associates -8.3K $772.66K

Politician trades

Politician trades in ACLS

CSV Excel
Column filters

Numbers accept 1.5M, 2B, 250K. Percent columns take percent (5 = 5%).

No politician trades match these filters.