Ultra Clean Holdings Inc
Institutional managers reporting a position on Form 13F-HR, as of Mar 31, 2026
1Largest holdersEvery position of a manager summed
- 1BlackRock, Inc.$424.85M14.0%
- 2VANGUARD PORTFOLIO MANAGEMENT LLC$174.24M5.8%
- 3SUSQUEHANNA INTERNATIONAL GROUP, LLP$137.13M4.5%
- 4TORONTO DOMINION BANK$132.43M4.4%
- 5VANGUARD CAPITAL MANAGEMENT LLC$119.17M3.9%
- 6STATE STREET CORP$114.28M3.8%
- 7FRONTIER CAPITAL MANAGEMENT CO LLC$111.14M3.7%
- 8Invesco Ltd.$103.22M3.4%
- 9Boston Partners$91.4M3.0%
- 10D. E. Shaw & Co., Inc.$73.57M2.4%
2HoldersChange from Dec 31, 2025
| Holder | Quantity | Change | Value | Share | Filed |
|---|---|---|---|---|---|
| BlackRock, Inc.Common shares | 6.8M | +113.2K+1.7% | $424.85M | 14.04% | May 13, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLCCommon shares | 2.8M | New | $174.24M | 5.76% | May 8, 2026 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLPCall options — common shares | 2.1M | +2.1M+10434.0% | $131M | 4.33% | May 15, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLCCommon shares · Amendment 1 (restatement) | 1.9M | New | $119.17M | 3.94% | May 15, 2026 |
| TORONTO DOMINION BANKCall options — common shares | 1.9M | New | $118.14M | 3.90% | May 15, 2026 |
| STATE STREET CORPCommon shares | 1.8M | −14,658−0.8% | $114.28M | 3.78% | May 15, 2026 |
| FRONTIER CAPITAL MANAGEMENT CO LLCCommon shares | 1.8M | −1.7M−49.1% | $111.14M | 3.67% | May 15, 2026 |
| Invesco Ltd.Common shares | 1.7M | −1.7M−51.2% | $103.22M | 3.41% | May 12, 2026 |
| Boston PartnersCommon shares | 1.5M | New | $91.4M | 3.02% | May 11, 2026 |
| D. E. Shaw & Co., Inc.Common shares | 1.2M | +231.1K+24.3% | $73.57M | 2.43% | May 15, 2026 |
| GEODE CAPITAL MANAGEMENT, LLCCommon shares | 1.1M | +51,351+4.7% | $70.95M | 2.34% | May 15, 2026 |
| Driehaus Capital Management LLCCommon shares | 1.1M | +608.7K+134.2% | $66.06M | 2.18% | May 15, 2026 |
| DIMENSIONAL FUND ADVISORS LPCommon shares | 1M | −513.1K−33.6% | $62.89M | 2.08% | May 7, 2026 |
| MORGAN STANLEYCommon shares | 911.7K | +17,277+1.9% | $56.69M | 1.87% | May 15, 2026 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INCCommon shares | 840.5K | +19,368+2.4% | $52.26M | 1.73% | May 15, 2026 |
| ROYCE & ASSOCIATES LPCommon shares | 759.5K | −339.2K−30.9% | $47.23M | 1.56% | May 12, 2026 |
| UBS Group AGCall options — common shares | 708K | New | $44.02M | 1.45% | May 5, 2026 |
| MILLENNIUM MANAGEMENT LLCCommon shares | 685.4K | +125.5K+22.4% | $42.62M | 1.41% | May 15, 2026 |
| OBERWEIS ASSET MANAGEMENT INC/Common shares | 640.5K | +11,976+1.9% | $39.82M | 1.32% | May 15, 2026 |
| PARADIGM CAPITAL MANAGEMENT INC/NYCommon shares | 608.2K | No change | $37.82M | 1.25% | May 14, 2026 |
| TWO SIGMA INVESTMENTS, LPCommon shares | 581.1K | New | $36.13M | 1.19% | May 15, 2026 |
| GOLDMAN SACHS GROUP INCCommon shares | 503.3K | −54,848−9.8% | $31.3M | 1.03% | May 15, 2026 |
| FULLER & THALER ASSET MANAGEMENT, INC.Common shares | 475.1K | +448.1K+1658.9% | $29.54M | 0.98% | May 14, 2026 |
| NORTHERN TRUST CORPCommon shares | 458.1K | −5,118−1.1% | $28.49M | 0.94% | May 14, 2026 |
| BANK OF AMERICA CORP /DE/Common shares | 454K | +378.6K+502.4% | $28.23M | 0.93% | May 18, 2026 |
3Report periods
| Report date | Filings | Holdings | Combined value | Latest filed | |
|---|---|---|---|---|---|
| Mar 31, 2026 | 331 | 346 | $3.03B | May 21, 2026 | |
| Dec 31, 2025 | 238 | 246 | $1.07B | May 27, 2026 | |
| Sep 30, 2025 | 243 | 253 | $1.16B | May 27, 2026 | |
| Jun 30, 2025 | 235 | 242 | $942.33M | May 21, 2026 | |
| Mar 31, 2025 | 7 | 7 | $20.28M | Mar 17, 2026 |
Filings for a quarter keep arriving for months after it ends, so the most recent and the earliest periods can be incomplete.
4About this data
Each row is one manager's position as disclosed in one Form 13F-HR filing; managers below the Form 13F reporting threshold do not appear. Values, quantities and manager names are as reported in each filing. A row totals the entries of one filing that share a security class and option type; a value or quantity is shown as not comparable when those entries differ in currency or unit. A restatement replaces the original filing and every earlier amendment for the same period; an amendment adding new holdings is listed alongside the filing it supplements and labelled as such. Positions are matched to this listing through the security identifiers reported in the filing.