Ultra Clean Holdings, Inc.
A supplier of critical parts and services for the semiconductor industry, Ultra Clean Holdings designs gas and fluid delivery systems, precision robotics, and process modules used in chip-making equipment, and runs ultra-high purity parts cleaning and coating services for chipmakers' tools. Its customers include equipment makers like Applied Materials and Lam Research as well as semiconductor device manufacturers, with operations reaching Asia Pacific and EMEA.
| Holder | Schedule | % of class | Shares | Filed |
|---|---|---|---|---|
| Invesco Ltd. | 13GPassive | 7% | 3.15M | Aug 13, 2026 |
| Capital World Investors | 13GPassive | 5.8% | 2.58M | Aug 12, 2026 |
| Vanguard Capital Management | 13GPassive | 5.01% | 2.25M | Jul 31, 2026 |
| FRONTIER CAPITAL MANAGEMENT CO.,LLC | 13G/APassive | 3.93% | 1.79M | May 15, 2026 |
| Vanguard Portfolio Management | 13GPassive | 6.2% | 2.82M | Apr 29, 2026 |
| The Vanguard Group | 13G/APassive | 0% | 0 | Mar 27, 2026 |
| SHAPIRO CAPITAL MANAGEMENT LLC | 13G/APassive | 2.8% | 1.28M | Feb 17, 2026 |
| FRONTIER CAPITAL MANAGEMENT CO.,LLC | 13GPassive | 6.1% | 2.75M | Aug 14, 2025 |
| Dimensional Fund Advisors LP | 13G/APassive | 4.7% | 2.14M | Jul 15, 2025 |
| BlackRock, Inc. | 13G/APassive | 15% | 6.75M | Apr 30, 2025 |