# ULTRA CLEAN HLDGS INC COM

ULTRA CLEAN HLDGS INC COM is a security (CUSIP 90385V107) tracked across SEC portfolio filings. 392 institutional managers reported $3.8B on Form 13F as of 2026-06-30; 36 registered fund positions totaling $278.7M via N-PORT as of 2026-05-31.

## Summary

- Issuer: ULTRA CLEAN HLDGS INC
- Class: COM
- CUSIP: 90385V107
- Asset category: EC
- 13F holders: 392
- 13F value: $3.8B
- 13F period: 2026-06-30
- N-PORT fund positions: 36
- N-PORT value: $278.7M
- N-PORT report: 2026-05-31

## Top institutional holders (Form 13F)

_Showing 15 of 392 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| BlackRock, Inc. | New York, NY | $986.7M | 6,919,992 |
| STATE STREET CORP | BOSTON, MA | $257.0M | 1,802,261 |
| Boston Partners | BOSTON, MA | $191.9M | 1,360,211 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | BALA CYNWYD, PA | $137.1M | 35,645 |
| TORONTO DOMINION BANK | Toronto, Ontario, A6 | $132.4M | 129,863 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $126.4M | 4,990,724 |
| [FRONTIER CAPITAL MANAGEMENT CO LLC](https://search.stillhousedata.com/firm/106274) | Boston, MA | $111.1M | 1,787,451 |
| D. E. Shaw & Co., Inc. | New York, NY | $73.6M | 1,183,257 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $70.9M | 1,140,780 |
| Driehaus Capital Management LLC | Chicago, IL | $66.1M | 1,062,376 |
| UBS Group AG | Zurich, V8 | $65.9M | 351,296 |
| DIMENSIONAL FUND ADVISORS LP | AUSTIN, TX | $62.9M | 1,011,778 |
| PINNACLE ASSOCIATES LTD | NEW YORK, NY | $57.0M | 399,934 |
| MORGAN STANLEY | NEW YORK, NY | $56.7M | 911,700 |
| [CHARLES SCHWAB INVESTMENT MANAGEMENT INC](https://search.stillhousedata.com/firm/106753) | SAN FRANCISCO, CA | $52.3M | 840,456 |

## Top fund holders (N-PORT)

_Showing 15 of 36 fund positions by value._

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [Invesco Small Cap Value Fund](https://search.stillhousedata.com/fund/S000027837) | AIM Sector Funds (Invesco Sector Funds) | $112.1M | 104.21% |
| [Oberweis Micro-Cap Fund](https://search.stillhousedata.com/fund/S000010231) | OBERWEIS FUNDS | $38.1M | 363.12% |
| [Nomura Small Cap Core Fund](https://search.stillhousedata.com/fund/S000002400) | Delaware Group Equity Funds V | $34.1M | 61.76% |
| [VANGUARD EXPLORER FUND](https://search.stillhousedata.com/fund/S000002578) | VANGUARD EXPLORER FUND | $16.8M | 7.72% |
| [VANGUARD S&P SMALL-CAP 600 INDEX FUND](https://search.stillhousedata.com/fund/S000030017) | VANGUARD ADMIRAL FUNDS | $13.4M | 22.80% |
| [U.S. MICRO CAP PORTFOLIO](https://search.stillhousedata.com/fund/S000000948) | DFA INVESTMENT DIMENSIONS GROUP INC | $13.0M | 17.39% |
| ROYCE MICRO-CAP TRUST, INC. | ROYCE MICRO-CAP TRUST, INC. | $10.5M | 152.87% |
| [VANGUARD STRATEGIC SMALL-CAP EQUITY FUND](https://search.stillhousedata.com/fund/S000012432) | VANGUARD HORIZON FUNDS | $8.9M | 36.22% |
| [Driehaus Small Cap Growth Fund](https://search.stillhousedata.com/fund/S000058261) | Driehaus Mutual Funds | $7.8M | 67.70% |
| ROYCE SMALL-CAP TRUST, INC. | ROYCE SMALL-CAP TRUST, INC. | $6.5M | 29.25% |
| [Master Small Cap Index Series](https://search.stillhousedata.com/fund/S000002716) | Quantitative Master Series LLC | $4.6M | 9.44% |
| [Small Cap Portfolio](https://search.stillhousedata.com/fund/S000001917) | BNY MELLON VARIABLE INVESTMENT FUND | $3.3M | 106.87% |
| [BNY Mellon Smallcap Stock Index Fund](https://search.stillhousedata.com/fund/S000000132) | BNY MELLON INDEX FUNDS, INC. | $1.8M | 20.86% |
| [Royce Capital Fund - Micro-Cap Portfolio](https://search.stillhousedata.com/fund/S000009496) | ROYCE CAPITAL FUND | $1.6M | 151.92% |
| [PGIM Quant Solutions Small-Cap Value Fund](https://search.stillhousedata.com/fund/S000004689) | Target Portfolio Trust | $969K | 23.51% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/90385V107.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.