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Of the 13 tracked institutions holding ACLS, 8 have a 3-year clone track record — 6 of them beat the S&P. Average holder's clone alpha: +3.3pt. It's a gauge of who owns the name, not just how many.
Among the 13 tracked institutional investors we monitor, ACLS (AXCELIS TECHNOLOGIES INC) is held with a combined value of $1.20B across 13,463,501 shares. The largest holder is BlackRock, Inc. with a position worth $459.51M. 3 funds opened new positions in the most recent quarter. 5 funds increased their holdings. 5 funds reduced their position.
Total Institutional Value
$1.20B
Total Shares Held
13,463,501
Institutional Holders
13
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | BlackRock, Inc. | $459.51M | 0.01% | +2.3% |
| 2 | VANGUARD GROUP INC | $331.20M | 0.00% | -1.5% |
| 3 | FMR LLC | $226.29M | 0.01% | +298.2% |
| 4 | STATE STREET CORP | $110.68M | 0.00% | +0.2% |
| 5 | PRICE T ROWE ASSOCIATES INC /MD/ | $33.72M | 0.00% | -5.4% |
| 6 | Grantham, Mayo, Van Otterloo & Co. LLC | $31.16M | 0.08% | +3.7% |
| 7 | AQR CAPITAL MANAGEMENT LLC | $3.72M | 0.00% | +6.5% |
| 8 | MILLENNIUM MANAGEMENT LLC | $1.17M | 0.00% | -90.4% |
| 9 | Gotham Asset Management, LLC | $1.11M | 0.00% | -2.2% |
| 10 | Bridgewater Associates, LP | $772.66K | 0.00% | New |
As of the latest SEC 13F filings, BlackRock, Inc. is the largest institutional holder of ACLS with a position worth $459.51M, representing 0.01% of their portfolio. In total, 13 institutional investors hold ACLS with a combined value of $1.20B.
In the most recent quarter, 3 funds opened a new position in ACLS. Additionally, 5 increased their holdings and 5 reduced their positions.
Institutional investors hold $1.20B worth of ACLS stock across 13 positions. The largest institutional holder is BlackRock, Inc. with $459.51M in holdings.
A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For ACLS, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their ACLS positions.
Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →
Last Close
$134.10
2026-07-24
YTD
+55.7%
54% of 52-week range
