UCTT Ultra Clean Holdings, Inc.
Ultra Clean Holdings, Inc. (UCTT) 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 |
|---|---|---|---|---|---|---|
| RENAISSANCE TECHNOLOGIES LLC Quant | New | +91.9K | — | $13.1M | 0.0% | 62 |
| Point72 Asset Management, L.P. | New | +62.4K | — | $8.9M | 0.0% | 61 |
| Divisadero Street Capital Management Long/Short | Sold Out | -100.0K | -100.0% | $14.3M | 0.0% | 60 |
| Balyasny Asset Management L.P. | New | +905 | — | $129.0K | 0.0% | 57 |
| Weiss Asset Management Event Quant | New | +22.9K | — | $3.3M | 0.1% | 56 |
| Holocene Advisors, LP | New | +2.9K | — | $415.1K | 0.0% | 56 |
| Voloridge Investment Management Quant | Sold Out | -11.8K | -100.0% | $1.7M | 0.0% | 55 |
| Sona Asset Management Event | New | +8.5K | — | $1.2M | 0.1% | 54 |
| Man Group Event Long/Short | Sold Out | -22.6K | -100.0% | $3.2M | 0.0% | 54 |
| Jain Global Long/Short Quant | New | +9.0K | — | $1.3M | 0.0% | 54 |
Most significant buyers
By move score, not size.
- RENAISSANCE TECHNOLOGIES LLC
- Point72 Asset Management, L.P.
- Balyasny Asset Management L.P.
- Weiss Asset Management
- Holocene Advisors, LP
Most significant sellers
By move score, not size.
- Divisadero Street Capital Management
- Voloridge Investment Management
- Man Group
- Capstone Investment Advisors
- Maverick Capital
Hedge fund positions
| Fund | Tier | Shares | Previous | Change | Change % | Portfolio wt. | Action | Score |
|---|---|---|---|---|---|---|---|---|
| RENAISSANCE TECHNOLOGIES LLC | 1 | 91.9K | 0 | +91.9K | — | 0.0% | New | 62 |
| Point72 Asset Management, L.P. | 1 | 62.4K | 0 | +62.4K | — | 0.0% | New | 61 |
| Divisadero Street Capital Management | 2 | 0 | 100.0K | -100.0K | -100.0% | 0.0% | Sold Out | 60 |
| Balyasny Asset Management L.P. | 2 | 905 | 0 | +905 | — | 0.0% | New | 57 |
| Weiss Asset Management | 2 | 22.9K | 0 | +22.9K | — | 0.1% | New | 56 |
| Holocene Advisors, LP | 2 | 2.9K | 0 | +2.9K | — | 0.0% | New | 56 |
| Voloridge Investment Management | 2 | 0 | 11.8K | -11.8K | -100.0% | 0.0% | Sold Out | 55 |
| Sona Asset Management | 3 | 8.5K | 0 | +8.5K | — | 0.1% | New | 54 |
| Man Group | 3 | 0 | 22.6K | -22.6K | -100.0% | 0.0% | Sold Out | 54 |
| Jain Global | 3 | 9.0K | 0 | +9.0K | — | 0.0% | New | 54 |
| Capstone Investment Advisors | 3 | 0 | 4.1K | -4.1K | -100.0% | 0.0% | Sold Out | 53 |
| Moore Capital Management | 3 | 1.5K | 0 | +1.5K | — | 0.0% | New | 52 |
| Y-Intercept | 4 | 2.3K | 0 | +2.3K | — | 0.0% | New | 48 |
| Maverick Capital | 2 | 5.0K | 20.3K | -15.3K | -75.2% | 0.0% | Reduced | 47 |
| Brevan Howard Capital Management | 3 | 68.7K | 7.8K | +60.9K | +784.1% | 0.2% | Increased | 46 |
| Quadrature Capital | 3 | 1.5K | 15.9K | -14.5K | -90.9% | 0.0% | Reduced | 46 |
| D. E. Shaw & Co., Inc. | 1 | 619.8K | 1.2M | -563.5K | -47.6% | 0.1% | Reduced | 45 |
| MILLENNIUM MANAGEMENT LLC | 2 | 388.2K | 685.4K | -297.2K | -43.4% | 0.0% | Reduced | 41 |
| MARSHALL WACE, LLP | 2 | 144.2K | 259.9K | -115.7K | -44.5% | 0.0% | Reduced | 40 |
| CITADEL ADVISORS LLC | 1 | 82.5K | 139.2K | -56.7K | -40.7% | 0.0% | Reduced | 39 |
| Trexquant Investment | 3 | 20.1K | 33.5K | -13.5K | -40.1% | 0.0% | Reduced | 32 |
| Boothbay Fund Management | 4 | 24.4K | 44.6K | -20.2K | -45.3% | 0.1% | Reduced | 31 |
| Portolan Capital Management | 3 | 24.8K | 33.7K | -8.9K | -26.3% | 0.1% | Reduced | 30 |
| TWO SIGMA INVESTMENTS, LP | 2 | 609.9K | 581.1K | +28.7K | +4.9% | 0.1% | Increased | 29 |
| ExodusPoint Capital Management | 3 | 41.8K | 52.1K | -10.3K | -19.8% | 0.1% | Reduced | 28 |
| Tudor Investment Corporation | 2 | 44.2K | 37.6K | +6.7K | +17.8% | 0.0% | Increased | 27 |
| AQR Capital Management | 3 | 210.1K | 178.8K | +31.4K | +17.5% | 0.0% | Increased | 26 |
| Engineers Gate | 4 | 11.6K | 8.9K | +2.7K | +29.8% | 0.0% | Increased | 24 |
| Caxton Associates | 3 | 25.9K | 24.0K | +2.0K | +8.2% | 0.1% | Increased | 24 |
| CastleKnight Management | 3 | 18.7K | 16.2K | +2.5K | +15.4% | 0.1% | Increased | 23 |
| Winton Group | 4 | 97.3K | 104.2K | -6.9K | -6.6% | 0.5% | Reduced | 21 |
| Walleye Capital | 3 | 85.1K | 87.5K | -2.4K | -2.7% | 0.1% | Reduced | 21 |
| Quantbot Technologies | 4 | 8.2K | 8.6K | -406 | -4.7% | 0.0% | Reduced | 16 |
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.