ACLS Axcelis Technologies, Inc.
Axcelis Technologies, Inc. (ACLS) Hedge Fund Activity
This view isolates hedge funds from the broader institutional ownership shown on the Institutional tab. A pension fund tracking an index may have no view on a stock; when a hedge fund builds or exits a position, that decision can carry information. This page measures those changes. Positions as of June 30, 2026.
Based on quarterly 13F long-equity filings. Changes compare reported quarter-end positions; filings can be reported up to 45 days later and do not represent a fund's complete exposure.
Most significant moves
Ranked by conviction, not size — how much of the fund's own book the position represents, how far it moved, and what kind of fund made it.
| Fund | Action | Shares changed | Change | Est. value | Portfolio wt. | Score |
|---|---|---|---|---|---|---|
| Bridgewater Associates Quant Macro | Sold Out | -8.3K | -100.0% | $1.6M | 0.0% | 63 |
| Weiss Asset Management Event Quant | New | +103.3K | — | $19.6M | 0.3% | 60 |
| MARSHALL WACE, LLP Long/Short | New | +22.2K | — | $4.2M | 0.0% | 58 |
| Portolan Capital Management Long/Short | Sold Out | -77.2K | -100.0% | $14.6M | 0.0% | 58 |
| Maverick Capital Long/Short Growth | New | +2.6K | — | $498.3K | 0.0% | 57 |
| Qube Research & Technologies Ltd Quant | New | +23.1K | — | $4.4M | 0.0% | 57 |
| Squarepoint Ops LLC Quant | Sold Out | -33.3K | -100.0% | $6.3M | 0.0% | 57 |
| Polar Asset Management Partners Long/Short | New | +38.7K | — | $7.3M | 0.3% | 56 |
| Woodline Partners LP Long/Short | New | +14.0K | — | $2.6M | 0.0% | 56 |
| Verition Fund Management Event Long/Short | New | +30.0K | — | $5.7M | 0.1% | 56 |
Most significant buyers
By move score, not size.
- Weiss Asset Management
- MARSHALL WACE, LLP
- Maverick Capital
- Qube Research & Technologies Ltd
- Polar Asset Management Partners
Most significant sellers
By move score, not size.
- Bridgewater Associates
- Portolan Capital Management
- Squarepoint Ops LLC
- Voloridge Investment Management
- Quadrature Capital
Hedge fund positions
| Fund | Tier | Shares | Previous | Change | Change % | Portfolio wt. | Action | Score |
|---|---|---|---|---|---|---|---|---|
| Bridgewater Associates | 1 | 0 | 8.3K | -8.3K | -100.0% | 0.0% | Sold Out | 63 |
| Weiss Asset Management | 2 | 103.3K | 0 | +103.3K | — | 0.3% | New | 60 |
| MARSHALL WACE, LLP | 2 | 22.2K | 0 | +22.2K | — | 0.0% | New | 58 |
| Portolan Capital Management | 3 | 0 | 77.2K | -77.2K | -100.0% | 0.0% | Sold Out | 58 |
| Maverick Capital | 2 | 2.6K | 0 | +2.6K | — | 0.0% | New | 57 |
| Qube Research & Technologies Ltd | 2 | 23.1K | 0 | +23.1K | — | 0.0% | New | 57 |
| Squarepoint Ops LLC | 2 | 0 | 33.3K | -33.3K | -100.0% | 0.0% | Sold Out | 57 |
| Polar Asset Management Partners | 3 | 38.7K | 0 | +38.7K | — | 0.3% | New | 56 |
| Woodline Partners LP | 2 | 14.0K | 0 | +14.0K | — | 0.0% | New | 56 |
| Verition Fund Management | 2 | 30.0K | 0 | +30.0K | — | 0.1% | New | 56 |
| Tudor Investment Corporation | 2 | 11.4K | 0 | +11.4K | — | 0.0% | New | 56 |
| Voloridge Investment Management | 2 | 0 | 44.2K | -44.2K | -100.0% | 0.0% | Sold Out | 55 |
| MILLENNIUM MANAGEMENT LLC | 2 | 139.2K | 12.5K | +126.7K | +1011.1% | 0.0% | Increased | 55 |
| Capital Fund Management | 3 | 13.5K | 0 | +13.5K | — | 0.0% | New | 55 |
| Quadrature Capital | 3 | 0 | 6.1K | -6.1K | -100.0% | 0.0% | Sold Out | 55 |
| Man Group | 3 | 11.9K | 0 | +11.9K | — | 0.0% | New | 54 |
| CITADEL ADVISORS LLC | 1 | 46.2K | 4.5K | +41.7K | +926.4% | 0.0% | Increased | 54 |
| Schonfeld Strategic Advisors | 3 | 0 | 17.9K | -17.9K | -100.0% | 0.0% | Sold Out | 53 |
| D. E. Shaw & Co., Inc. | 1 | 133.0K | 544.4K | -411.4K | -75.6% | 0.0% | Reduced | 52 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 2 | 50.8K | 7.5K | +43.3K | +577.0% | 0.0% | Increased | 52 |
| Walleye Capital | 3 | 274 | 0 | +274 | — | 0.0% | New | 51 |
| Balyasny Asset Management L.P. | 2 | 616.2K | 1.4M | -748.3K | -54.8% | 0.2% | Reduced | 49 |
| Edgestream Partners | 4 | 0 | 3.4K | -3.4K | -100.0% | 0.0% | Sold Out | 49 |
| TWO SIGMA INVESTMENTS, LP | 2 | 48.4K | 197.6K | -149.1K | -75.5% | 0.0% | Reduced | 49 |
| Aquatic Capital Management | 4 | 3.8K | 0 | +3.8K | — | 0.0% | New | 48 |
| Holocene Advisors, LP | 2 | 9.6K | 51.6K | -42.0K | -81.4% | 0.0% | Reduced | 47 |
| Point72 Asset Management, L.P. | 1 | 3.0K | 2.3K | +750 | +33.3% | 0.0% | Increased | 37 |
| Winton Group | 4 | 8.6K | 14.2K | -5.5K | -39.1% | 0.1% | Reduced | 29 |
| Brevan Howard Capital Management | 3 | 5.2K | 3.8K | +1.4K | +37.6% | 0.0% | Increased | 28 |
| Gotham Asset Management, LLC | 2 | 10.8K | 11.9K | -1.1K | -9.6% | 0.0% | Reduced | 26 |
| Voleon Capital Management | 3 | 39.1K | 35.2K | +3.9K | +11.1% | 0.1% | Increased | 23 |
| AQR Capital Management | 3 | 35.5K | 40.0K | -4.5K | -11.2% | 0.0% | Reduced | 22 |
Every fund above opens. Subscribers can see any manager's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
Sign in or subscribeHedge funds are identified from their 13F filings, which are due 45 days after quarter end and cover long U.S.-listed equity positions only. A fund's short book never appears, so a reduced position can mean a changed view or a changed hedge — the filing doesn't say which.