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ACLS — AXCELIS TECHNOLOGIES INC

Reported value held$3.33B
Funds holding (latest)47
SectorTechnology
Funds holding (Q2 2026)37
Institutional value$2.87B · 15.53M sh
New / Add / Cut / Exit4 / 14 / 19 / 2
Top-5 / Top-10 concentration73.5% / 85.9%
Institutional holdings change Accumulating +4.3% (+633.28K sh)
Institutional value change Up +111.9%

As of Q2 2026, 37 SEC-registered investment managers reported holding ACLS (AXCELIS TECHNOLOGIES INC) in their latest 13F filings, with a combined reported value of $2.87B across 15.53M shares. That is +4.3% by share count (+633.28K shares) versus the previous quarter, while reported value moved +111.9%. Ownership is concentrated: the five largest holders account for 73.5% of reported value and the top ten for 85.9%.

Compared with the prior quarter, 4 opened new positions, 14 added to existing stakes, 19 trimmed, 2 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.

ACLS is classified in the Technology sector.

All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.

FundQuarterSharesValuePortfolio WeightChange
BlackRock Inc history Q2 2026 5.03M $952.83M 0.01% Add
Fidelity Management & Research (FMR) history Q2 2026 4.13M $781.65M 0.04% Add
Vanguard Group history Q4 2025 4.12M $331.20M 0.01% Reduce
Geode Capital Management history Q2 2026 833.61K $157.96M 0.01% Add
Balyasny Asset Management history Q2 2026 616.20K $116.74M 0.15% Reduce
Invesco Ltd history Q2 2026 527.72K $99.98M 0.01% Add
Whale Rock Capital Management history Q3 2023 517.06K $84.31M 1.75% Add
Charles Schwab Investment Management history Q2 2026 416.23K $78.85M 0.01% Reduce
Manulife Financial history Q2 2026 383.76K $72.70M 0.06% Reduce
Northern Trust Corp history Q2 2026 382.03K $72.38M 0.01% Reduce
Morgan Stanley history Q2 2026 366.08K $69.35M 0.00% Reduce
UBS Group AG history Q2 2026 320.89K $60.79M 0.01% Reduce
Goldman Sachs Group history Q2 2026 235.25K $44.57M 0.00% Reduce
Principal Global Investors history Q2 2026 218.11K $41.32M 0.02% Add
BNY Mellon history Q2 2026 204.96K $38.83M 0.01% Add
Citigroup Inc history Q2 2026 184.12K $34.88M 0.01% Add
Citadel Advisors history Q2 2026 160.94K $30.49M 0.00% Add
Millennium Management history Q2 2026 157.54K $29.85M 0.01% Add
D. E. Shaw & Co history Q2 2026 141.64K $26.83M 0.01% Reduce
PSP Investments history Q2 2026 105.60K $20.01M 0.05% Reduce

View all 47 fund holders →

New Positions (Q2 2026)

Fully Exited (vs previous quarter)

Fund Position History — shares by quarter (top 20 funds)

FundQ3 2021Q4 2021Q1 2022Q2 2022Q3 2022Q4 2022Q1 2023Q2 2023Q3 2023Q4 2023Q1 2024Q2 2024Q3 2024Q4 2024Q1 2025Q2 2025Q3 2025Q4 2025Q1 2026Q2 2026
BlackRock Inc — — — — — — — — — — — — 5.34M 5.45M 5.34M 5.02M 4.86M 4.83M 4.94M 5.03M
Fidelity Management & Research (FMR) 619 699 687 15.88K 13.56K 1.04M 1.04M 1.08M 296.56K 167.01K 21.64K 173.88K 263.33K 22.06K 49.61K 382.57K 551.40K 610.60K 2.43M 4.13M
Geode Capital Management 569.43K 582.15K 594.68K 583.30K 591.36K 612.58K 638.00K 713.52K 750.07K 776.57K 804.87K 846.38K 874.52K 897.75K 925.57K 925.30K 926.74K 917.75K 811.26K 833.61K
Balyasny Asset Management — — — — 5.03K — 25.39K 1.41K 7.13K 1.79K — — — — — 90.75K 2.33K 243.50K 1.36M 616.20K
Invesco Ltd 616.46K 727.23K 649.20K 505.39K 523.48K 523.15K 748.39K 829.04K 970.41K 328.42K 150.43K 326.73K 136.84K 131.12K 138.25K 139.80K 386.74K 478.90K 165.07K 527.72K
Charles Schwab Investment Management 242.24K 241.53K 299.18K 319.69K 329.27K 335.47K 324.74K 311.53K 413.48K 431.11K 439.51K 457.19K 347.02K 369.94K 386.01K 406.41K 427.11K 431.19K 445.77K 416.23K
Manulife Financial 508.06K 434.72K 383.25K 469.02K 413.75K 13.02K 13.24K 13.21K 17.20K 16.98K 18.37K 19.46K 18.70K 18.31K 17.82K 16.74K 15.30K 14.04K 491.75K 383.76K
Northern Trust Corp 402.21K 400.23K 380.78K 369.46K 369.23K 373.76K 378.70K 384.78K 392.38K 375.59K 368.18K 410.96K 410.89K 392.08K 401.93K 441.66K 434.99K 405.15K 416.70K 382.03K
Morgan Stanley 201.39K 236.28K 192.28K 368.97K 353.30K 356.06K 386.13K 401.50K 332.58K 467.82K 652.18K 637.64K 675.92K 495.48K 507.38K 550.16K 454.09K 350.22K 581.64K 366.08K
UBS Group AG 121.14K 136.15K 128.85K 124.39K 161.17K 159.10K 160.48K 125.69K 163.92K 217.76K 196.07K 159.49K 135.74K 248.39K 272.14K 198.02K 127.32K 213.39K 377.24K 320.89K
Goldman Sachs Group 690.53K 201.55K 296.26K 450.52K 463.11K 365.79K 394.45K 543.47K 438.59K 442.59K 481.78K 702.61K 561.88K 591.12K 635.39K 591.18K 494.77K 629.81K 497.62K 235.25K
Principal Global Investors 235.96K 227.44K 225.84K 226.17K 211.88K 214.59K 207.72K 215.42K 191.34K 192.26K 196.67K 211.56K 181.08K 188.56K 194.04K 205.68K 185.27K 200.03K 210.20K 218.11K
BNY Mellon 338.40K 330.68K 332.75K 324.76K 324.08K 296.87K 283.93K 307.97K 300.35K 281.37K 261.89K 295.74K 264.80K 226.36K 212.53K 226.06K 219.42K 203.54K 199.67K 204.96K
Citigroup Inc 22.30K 31.82K 35.30K 20.70K 26.76K 25.88K 47.55K 33.64K 80.23K 75.16K 175.17K 215.27K 88.73K 118.19K 159.62K 362.46K 324.35K 110.47K 24.64K 184.12K
Citadel Advisors 97.71K 183.99K 95.52K 82.81K 103.45K 35.99K 311.91K 128.40K 179.16K 234.30K 384.83K 327.04K 436.04K 467.76K 511.49K 578.29K 203.03K 247.85K 64.70K 160.94K
Millennium Management 305.85K 534.10K 454.36K 223.15K 43.72K — 97.10K 218.33K 128.01K 512.52K 417.73K 214.08K 116.70K 290.27K 184.00K 107.39K 261.78K 130.09K 12.53K 157.54K
D. E. Shaw & Co 8.71K — 13.91K 11.19K 18.78K 14.60K 60.29K 126.51K 209.70K 132.63K 45.12K 31.04K 38.16K 118.78K 71.61K 103.95K 177.04K 470.29K 544.42K 141.64K
PSP Investments 67.84K 67.84K 62.17K 61.12K 60.55K 59.76K 57.64K 58.06K 40.56K 67.95K 66.99K 71.59K 69.19K 81.03K 103.07K 109.58K 122.56K 129.78K 109.79K 105.60K
Bank of America Corp 41.56K 58.42K 58.46K 87.73K 40.70K 72.03K 32.37K 13.60K 107.75K 44.99K 189.18K 211.64K 139.58K 285.28K 919.40K 703.44K 410.31K 118.21K 111.00K 90.15K
First Eagle Investment Management — — — 48.84K 65.25K 64.30K 27.40K 8.20K 7.28K — — — — — — 73.00K 130.36K 136.32K 100.55K 71.92K

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