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Axcelis Technologies

US · ACLS #2213 by market cap Listed 1970
138.40 -2.75 -1.95%
Live - 5344 symbols - heartbeat 187s ago · 2026-10-08 07:47
Pre-market 136.32 -1.50%
After-hours 140.26 +1.34%
Market cap
4.27B
P/B
4.01
EPS
3.80
Reader sentiment Are you bullish or bearish on ACLS?

Anonymous reader poll. Unscientific, not investment advice.

✦ Quant Ownership Signal how this is computed

Mixed / stable
  • The number of reporting institutions decreased by 1 in the most recent period (2026/Q3).
  • Total institutional ownership (as a % of shares) was little changed.

Institutional ownership

Held by institutions
103.81% +0.06pp
Institutions
503 -1
As of
2026/Q3 vs. prior period

Ownership vs. money flow

Diverging

Institutions added shares last reporting period, and the stock has seen net outflows in main-fund flow over the last 20 trading sessions - the two are pointing in different directions.

Institutional ownership changes are reported quarterly with a lag; fund-flow data is daily. Treat this as a directional cross-check, not a precise timing signal.

Holder types

Mutual Fund93.85%
Hedge Fund5.08%
Public Company2.26%
Government Pension Fund1.42%
Private Company0.64%
Individual/Insider0.63%
Family Office/Trust0.25%
Insurance Company0.19%

Top holders as of 2026-06-30

BlackRock 16.29% · 5.03M sh
FMR 13.34% · 4.12M sh
Vanguard Portfolio Management, LLC 8.03% · 2.48M sh
Vanguard Capital Management, LLC 5.20% · 1.61M sh
State Street Global Advisors 3.99% · 1.23M sh
Victory Capital Management Inc. 3.67% · 1.13M sh
Reinhart Partners, LLC 3.01% · 928.66K sh
Geode Capital Management, LLC 2.70% · 833.61K sh
BNPP Asset Management Holding 2.60% · 803.15K sh
Amundi Asset Management US, Inc. 2.39% · 738.60K sh

Bar length is relative to the largest holder shown here, not to 100% of the company.

Insiders

50 filings tracked · 15 buys · 35 sells

NameRoleStake
Russell Low Chief Executive Officer 0.16%
John Kurtzweil Independent Director 0.10%
Gerald Blumenstock Executive Vice President of Engineering 0.06%
Thomas Dennis Independent Director 0.05%
Gregory Redinbo Executive Vice President of Marketing & Applications 0.05%
Tzu-Yin Chiu Independent Director 0.03%
Jeanne Quirk Independent Director 0.03%
Christopher Tatnall Executive Vice President of Global Customer Operations 0.02%
Dipti Vachani Independent Director 0.02%
Todd Sutton VP of Corporate Controller 0.02%

Insider transactions most recent Form 4 filings

DateNameRoleTypeSharesPrice
2026-09-14 Gregory Redinbo Executive Vice President of Marketing & Applications Sale to Issuer -208 $105.04
2026-09-14 Christopher Tatnall Executive Vice President of Global Customer Operations Sale to Issuer -136 $105.04
2026-07-14 David Ryzhik Senior Vice President of Investor Relations and Corporate Strategy Sale to Issuer -221 $145.01
2026-06-15 David Ryzhik Senior Vice President of Investor Relations and Corporate Strategy Sale to Issuer -76 $176.85
2026-06-14 Gerald Blumenstock Executive Vice President of Engineering Sale to Issuer -506 $191.60
2026-06-02 Necip Sayiner Director Open Market Disposition -1,586 $157.44
2026-06-01 Robert Mahoney Officer Open Market Disposition -1,155 $155.24
2026-05-26 Todd Sutton VP of Corporate Controller Open Market Disposition -2,000 $159.99
2026-05-21 Thomas Dennis Independent Director Open Market Disposition -900 $155.37
2026-05-21 Eileen Evans Executive Vice President Open Market Disposition -926 $155.51
2026-05-20 Gerald Blumenstock Executive Vice President of Engineering Open Market Disposition -1,161 $152.70
2026-05-19 Christopher Tatnall Executive Vice President of Global Customer Operations Open Market Disposition -1,166 $149.75
2026-05-18 John Kurtzweil Independent Director Open Market Disposition -3,500 $138.79
2026-05-18 Gregory Graves Director Open Market Disposition -3,225 $141.41–142.51
2026-05-18 Jeanne Quirk Independent Director Open Market Disposition -1,789 $140.22
2026-05-17 Russell Low Chief Executive Officer Sale to Issuer -711 $146.24
2026-05-17 Gregory Redinbo Executive Vice President of Marketing & Applications Sale to Issuer -190 $146.24
2026-05-17 Robert Mahoney Officer Sale to Issuer -312 $146.24
2026-05-17 Todd Sutton VP of Corporate Controller Sale to Issuer -184 $146.24
2026-05-14 John Kurtzweil Independent Director Other Acquisition +1,440 --

Form 4 filings, most recent per company. "Other Derivative Acquisition" rows are mostly RSU/option vesting, not open-market buying - the Type column says which.

Quote time 2026-10-08 07:47:14 · For reference only, not investment advice and not tailored to your situation.