AXCELIS TECHNOLOGIES INC (ACLS)
Institutional ownership reported to the SEC as of Q2 2026, across 31 quarters.
414
Reporting holders
$6.0B
Reported value
99.7%
Of shares outstanding
2.9%
Held as options
+62
Holder change
Institutions report 30,786,760 shares against 30,881,489 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end. A figure this high can overstate: where an adviser and a sub-adviser both report the same shares, both are counted.
Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | $952.8M | 5,029,462 | 0.01% | 8q | +1.9%+$17.6M |
| FMR LLC | $781.7M | 4,125,902 | 0.03% | 24q | +69.7%+$321.1M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $469.6M | 2,478,878 | 0.02% | 2q | HELD |
| VANGUARD CAPITAL MANAGEMENT LLC | $262.7M | 1,386,518 | 0.01% | 2q | HELD |
| STATE STREET CORP | $233.2M | 1,231,109 | 0.01% | 31q | +3.5%+$8.0M |
| VICTORY CAPITAL MANAGEMENT INC | $214.8M | 1,134,007 | 0.12% | 31q | -11.3%-$27.5M |
| REINHART PARTNERS, LLC. | $175.9M | 928,660 | 4.02% | 10q | -44.0%-$138.1M |
| GEODE CAPITAL MANAGEMENT, LLC | $158.0M | 833,607 | 0.01% | 31q | +2.8%+$4.2M |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | $152.2M | 803,151 | 0.15% | 19q | -20.2%-$38.4M |
| DIMENSIONAL FUND ADVISORS LP | $134.3M | 709,266 | 0.02% | 31q | -16.0%-$25.5M |
| Balyasny Asset Management L.P. | $116.7M | 616,196 | 0.15% | 5q | -54.8%-$141.8M |
| PRIMECAP MANAGEMENT CO/CA/ | $115.6M | 610,451 | 0.07% | 31q | -7.3%-$9.1M |
| Invesco Ltd. | $100.0M | 527,724 | 0.01% | 31q | +219.7%+$68.7M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $78.9M | 416,230 | 0.01% | 31q | -6.6%-$5.6M |
| Sixth Street Partners Management Company, L.P. | $78.9M | 416,230 | 0.01% | new | NEW |
| BARROW HANLEY MEWHINNEY & STRAUSS LLC | $74.3M | 392,240 | 0.23% | 2q | +688040.4%+$74.3M |
| JANE STREET GROUP, LLC | $73.7M | 1,392 | 0.01% | 25q | HELD |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | $72.7M | 383,760 | 0.06% | 31q | -22.0%-$20.5M |
| NORTHERN TRUST CORP | $72.4M | 382,027 | 0.01% | 31q | -8.3%-$6.6M |
| AMERICAN CENTURY COMPANIES INC | $70.1M | 369,879 | 0.03% | 18q | -61.1%-$110.3M |
| MORGAN STANLEY | $69.4M | 366,077 | 0.00% | 35q | -37.1%-$40.8M |
| Boston Trust Walden Corp | $68.1M | 359,256 | 0.52% | 8q | -5.1%-$3.7M |
| EMERALD ADVISERS, LLC | $62.6M | 330,469 | 1.47% | 2q | +243.4%+$44.4M |
| UBS Group AG | $60.8M | 320,891 | 0.01% | 31q | -14.9%-$10.7M |
| Boston Partners | $55.7M | 303,929 | 0.05% | 10q | -10.7%-$6.7M |
| GOLDMAN SACHS GROUP INC | $44.6M | 235,253 | 0.00% | 31q | -52.7%-$49.7M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $43.3M | 26,829 | 0.00% | 31q | +110.0%+$22.7M |
| VANGUARD FIDUCIARY TRUST CO | $41.8M | 220,809 | 0.01% | 2q | +10.1%+$3.9M |
| EMERALD MUTUAL FUND ADVISERS TRUST | $41.6M | 219,443 | 1.46% | 2q | +362.8%+$32.6M |
| PRINCIPAL FINANCIAL GROUP INC | $41.3M | 218,113 | 0.02% | 31q | +3.8%+$1.5M |
| Public Sector Pension Investment Board | $40.0M | 211,202 | 0.05% | 31q | +92.4%+$19.2M |
| Allspring Global Investments Holdings, LLC | $39.1M | 219,357 | 0.06% | 19q | -15.2%-$7.0M |
| Bank of New York Mellon Corp | $38.8M | 204,964 | 0.01% | 31q | +2.7%+$1.0M |
| CITIGROUP INC | $34.9M | 184,124 | 0.01% | 31q | +647.1%+$30.2M |
| CITADEL ADVISORS LLC | $30.5M | 46,239 | 0.00% | 30q | +926.4%+$27.5M |
| MILLENNIUM MANAGEMENT LLC | $29.8M | 139,242 | 0.01% | 14q | +1011.1%+$27.2M |
| IMC-Chicago, LLC | $27.6M | options only | 0.01% | 10q | OPTIONS |
| D. E. Shaw & Co., Inc. | $26.8M | 133,044 | 0.01% | 18q | -75.6%-$83.0M |
| Grantham, Mayo, Van Otterloo & Co. LLC | $25.7M | 135,580 | 0.06% | 18q | -59.5%-$37.7M |
| ALPINE ASSOCIATES MANAGEMENT INC. | $25.6M | 134,905 | 1.60% | new | NEW |
| Sagefield Capital LP | $25.3M | 133,770 | 1.88% | 2q | +62.7%+$9.8M |
| FEDERATED HERMES, INC. | $25.1M | 132,331 | 0.04% | 7q | -36.7%-$14.6M |
| FIRST TRUST ADVISORS LP | $23.4M | 123,278 | 0.01% | 17q | -10.5%-$2.7M |
| Alberta Investment Management Corp | $20.3M | 107,250 | 0.11% | 2q | +200.0%+$13.5M |
| Weiss Asset Management LP | $19.6M | 103,258 | 0.21% | new | NEW |
| KENNEDY CAPITAL MANAGEMENT LLC | $18.0M | 95,038 | 0.32% | 28q | -46.6%-$15.7M |
| Old West Investment Management, LLC | $17.1M | 90,334 | 1.81% | 4q | +112.6%+$9.1M |
| BANK OF AMERICA CORP /DE/ | $17.1M | 90,147 | 0.00% | 31q | -18.8%-$4.0M |
| BNP PARIBAS FINANCIAL MARKETS | $16.6M | 87,705 | 0.01% | 31q | -39.4%-$10.8M |
| Creative Planning | $15.8M | 83,477 | 0.01% | 14q | +7.4%+$1.1M |
| Nuveen, LLC | $15.4M | 81,142 | 0.00% | 6q | +13.7%+$1.8M |
| RHUMBLINE ADVISERS | $14.5M | 76,372 | 0.01% | 31q | -12.5%-$2.1M |
| First Eagle Investment Management, LLC | $13.6M | 71,925 | 0.02% | 5q | -28.5%-$5.4M |
| Legal & General Group Plc | $13.3M | 70,350 | 0.00% | 31q | -2.2%-$295.4K |
| WELLINGTON MANAGEMENT GROUP LLP | $13.1M | 68,987 | 0.00% | new | NEW |
| DEUTSCHE BANK AG\ | $12.9M | 67,840 | 0.00% | 34q | +135.1%+$7.4M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $12.5M | 66,069 | 0.00% | 14q | +2.4%+$287.8K |
| ROYCE & ASSOCIATES LP | $12.4M | 65,700 | 0.10% | 31q | -47.6%-$11.3M |
| MERCER GLOBAL ADVISORS INC /ADV | $12.0M | 63,326 | 0.01% | 4q | +32.0%+$2.9M |
| Swiss National Bank | $11.7M | 61,600 | 0.01% | 31q | +0.7%+$75.8K |
| Verition Fund Management LLC | $11.4M | 60,084 | 0.03% | new | NEW |
| TWO SIGMA INVESTMENTS, LP | $10.7M | 48,437 | 0.01% | 8q | -75.5%-$33.1M |
| AMERIPRISE FINANCIAL INC | $10.0M | 52,552 | 0.00% | 31q | -66.6%-$19.9M |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | $9.6M | 50,777 | 0.01% | 2q | +577.0%+$8.2M |
| JPMORGAN CHASE & CO | $8.0M | 44,011 | 0.00% | 31q | -80.2%-$32.5M |
| Emerald Investment Advisers, LLC | $7.9M | 41,615 | 0.52% | 2q | +4.7%+$350.7K |
| WELLS FARGO & COMPANY/MN | $7.7M | 40,607 | 0.00% | 31q | -60.7%-$11.9M |
| GLOBEFLEX CAPITAL L P | $7.4M | 39,162 | 0.95% | 31q | -11.9%-$1.0M |
| Voleon Capital Management LP | $7.4M | 39,127 | 0.14% | 2q | +11.1%+$740.0K |
| LPL Financial LLC | $7.4M | 38,900 | 0.00% | 21q | +72.9%+$3.1M |
| Polar Asset Management Partners Inc. | $7.3M | 38,728 | 0.12% | new | NEW |
| RAYMOND JAMES FINANCIAL INC | $7.2M | 37,959 | 0.00% | 7q | +1388.6%+$6.7M |
| ENVESTNET ASSET MANAGEMENT INC | $6.8M | 35,707 | 0.00% | 22q | +12.4%+$743.8K |
| AQR CAPITAL MANAGEMENT LLC | $6.7M | 35,538 | 0.00% | 31q | -11.2%-$848.2K |
| NEEDHAM INVESTMENT MANAGEMENT LLC | $6.7M | 35,500 | 0.20% | 3q | -16.5%-$1.3M |
| Informed Momentum Co LLC | $6.6M | 35,066 | 0.59% | new | NEW |
| Connor, Clark & Lunn Investment Management Ltd. | $6.4M | 34,043 | 0.01% | 2q | +117.1%+$3.5M |
| SEI INVESTMENTS CO | $6.4M | 33,749 | 0.01% | 26q | -25.1%-$2.1M |
| Amundi | $6.4M | 33,609 | 0.00% | 17q | -17.3%-$1.3M |
| Squarepoint Ops LLC | $6.1M | options only | 0.01% | 6q | OPTIONS |
| PRUDENTIAL FINANCIAL INC | $6.0M | 31,862 | 0.01% | 31q | +1.5%+$91.9K |
| Jupiter Topco LLC | $6.0M | 31,821 | 0.00% | new | FIRST |
| GREAT LAKES ADVISORS, LLC | $6.0M | 31,556 | 0.05% | 2q | -33.7%-$3.0M |
| VANGUARD ASSET MANAGEMENT, Ltd | $5.6M | 29,754 | 0.00% | 2q | +9.4%+$484.0K |
| Russell Investments Group, Ltd. | $5.4M | 28,274 | 0.00% | 31q | +263.0%+$3.9M |
| STATE OF WISCONSIN INVESTMENT BOARD | $5.0M | 26,472 | 0.01% | 24q | -35.8%-$2.8M |
| PARADIGM CAPITAL MANAGEMENT INC/NY | $4.5M | 24,000 | 0.12% | 22q | HELD |
| ISTHMUS PARTNERS, LLC | $4.5M | 23,594 | 0.43% | 10q | -40.1%-$3.0M |
| Qube Research & Technologies Ltd | $4.4M | 23,094 | 0.00% | new | NEW |
| MARSHALL WACE, LLP | $4.2M | 22,248 | 0.00% | new | NEW |
| BRIDGES INVESTMENT MANAGEMENT INC | $4.1M | 21,558 | 0.05% | 9q | -44.2%-$3.2M |
| ALLIANCEBERNSTEIN L.P. | $4.1M | 43,657 | 0.00% | 31q | +26.6%+$853.4K |
| Louisiana State Employees Retirement System | $3.8M | 27,100 | 0.03% | 25q | +99.3%+$1.9M |
| ABN AMRO INVESTMENT SOLUTIONS | $3.8M | 20,103 | 0.03% | 11q | -18.4%-$861.4K |
| Allianz Asset Management GmbH | $3.7M | 40,133 | 0.00% | 2q | HELD |
| MetLife Investment Management, LLC | $3.5M | 18,260 | 0.02% | 4q | +5.9%+$194.2K |
| STIFEL FINANCIAL CORP | $3.4M | 18,080 | 0.00% | 19q | -19.9%-$853.3K |
| LOS ANGELES CAPITAL MANAGEMENT LLC | $3.4M | 17,962 | 0.01% | 3q | +7709.6%+$3.4M |
| Integrated Quantitative Investments LLC | $3.3M | 17,649 | 0.55% | new | NEW |
| FRANKLIN RESOURCES INC | $3.2M | 16,865 | 0.00% | 20q | -36.9%-$1.9M |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-08-06 | 13G/A | FMR LLCwith 1 co-filers | 13.4% |
| 2026-07-14 | 13G/A | REINHART PARTNERS, LLC. | 3.0% |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 414 | $6.0B | 30,786,760 | 105 | 103 | 128 | 2.9% |
| Q1 2026 | 352 | $3.0B | 31,636,496 | 63 | 95 | 115 | 1.0% |
| Q4 2025 | 340 | $2.4B | 29,134,437 | 51 | 113 | 103 | 0.8% |
| Q3 2025 | 327 | $2.8B | 28,516,572 | 66 | 95 | 101 | 2.4% |
| Q2 2025 | 303 | $2.2B | 29,910,167 | 61 | 95 | 90 | 3.1% |
| Q1 2025 | 279 | $1.5B | 29,145,792 | 43 | 109 | 81 | 3.6% |
| Q4 2024 | 299 | $2.1B | 29,473,352 | 40 | 108 | 82 | 4.1% |
| Q3 2024 | 331 | $3.1B | 28,802,186 | 43 | 113 | 109 | 2.6% |
| Q2 2024 | 350 | $4.3B | 29,470,044 | 55 | 122 | 109 | 2.7% |
| Q1 2024 | 338 | $3.5B | 30,534,039 | 47 | 107 | 136 | 3.2% |
| Q4 2023 | 374 | $3.9B | 28,877,264 | 49 | 142 | 109 | 4.0% |
| Q3 2023 | 368 | $4.8B | 28,224,417 | 51 | 124 | 120 | 3.3% |
| Q2 2023 | 354 | $5.2B | 27,789,779 | 66 | 95 | 130 | 2.6% |
| Q1 2023 | 324 | $3.7B | 27,633,905 | 71 | 91 | 113 | 1.7% |
| Q4 2022 | 257 | $1.9B | 24,234,363 | 53 | 65 | 87 | 1.0% |
| Q3 2022 | 288 | $1.8B | 28,467,069 | 47 | 90 | 96 | 2.2% |
| Q2 2022 | 276 | $1.6B | 27,743,849 | 38 | 89 | 94 | 2.0% |
| Q1 2022 | 286 | $2.1B | 27,140,431 | 67 | 85 | 95 | 2.2% |
| Q4 2021 | 251 | $2.1B | 27,652,246 | 56 | 67 | 75 | 1.3% |
| Q3 2021 | 204 | $1.4B | 29,085,276 | 39 | 47 | 79 | 0.7% |
| Q2 2021 | 186 | $1.2B | 28,919,528 | 19 | 53 | 76 | 0.5% |
| Q1 2021 | 192 | $1.2B | 29,166,584 | 45 | 48 | 65 | 0.8% |
| Q4 2020 | 171 | $838.2M | 28,637,260 | 21 | 52 | 62 | 0.5% |
| Q3 2020 | 176 | $626.8M | 28,276,396 | 34 | 52 | 51 | 0.7% |
| Q2 2020 | 175 | $792.0M | 28,290,061 | 44 | 51 | 46 | 0.5% |
| Q1 2020 | 137 | $528.7M | 28,794,885 | 20 | 41 | 39 | 0.3% |
| Q4 2019 | 136 | $690.0M | 28,581,859 | 20 | 42 | 39 | 0.2% |
| Q3 2019 | 142 | $457.9M | 26,628,937 | 24 | 42 | 42 | 0.6% |
| Q2 2019 | 133 | $407.4M | 26,914,007 | 14 | 54 | 30 | 0.6% |
| Q1 2019 | 147 | $548.3M | 27,114,203 | 24 | 44 | 31 | 0.5% |
| Q4 2018 | 138 | $499.8M | 28,048,990 | 4 | 2 | 1 | 0.1% |