Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in UCTT held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 6.8M | $424.9M | +1.7% | 15.020% | 0.01% |
| 2 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2.8M | $174.2M | β | 6.160% | 0.01% |
| 3 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 2.2M | $137.1M | +2459.7% | 4.848% | 0.02% |
| 4 | TORONTO DOMINION BANK | 2.1M | $132.4M | +11649.7% | 4.682% | 0.19% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 1.9M | $119.2M | β | 4.213% | 0.00% |
| 6 | STATE STREET CORP | 1.8M | $114.3M | -0.8% | 4.040% | 0.00% |
| 7 | FRONTIER CAPITAL MANAGEMENT CO LLC | 1.8M | $111.1M | -49.1% | 3.929% | 1.14% |
| 8 | Invesco Ltd. | 1.7M | $103.2M | -51.2% | 3.649% | 0.02% |
| 9 | Boston Partners | 1.5M | $91.4M | β | 3.229% | 0.10% |
| 10 | D. E. Shaw & Co., Inc. | 1.2M | $73.6M | +24.3% | 2.601% | 0.07% |
| 11 | GEODE CAPITAL MANAGEMENT, LLC | 1.1M | $70.9M | +4.7% | 2.508% | 0.00% |
| 12 | DRIEHAUS CAPITAL MANAGEMENT LLC | 1.1M | $66.1M | +134.2% | 2.335% | 0.49% |
| 13 | UBS Group AG | 1.1M | $65.9M | +355.7% | 2.329% | 0.01% |
| 14 | DIMENSIONAL FUND ADVISORS LP | 1.0M | $62.9M | -33.7% | 2.224% | 0.01% |
| 15 | MORGAN STANLEY | 912K | $56.7M | +1.9% | 2.004% | 0.00% |
| 16 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 840K | $52.3M | +2.4% | 1.848% | 0.01% |
| 17 | ROYCE & ASSOCIATES LP | 759K | $47.2M | -30.9% | 1.670% | 0.47% |
| 18 | OBERWEIS ASSET MANAGEMENT INC/ | 640K | $39.8M | +1.9% | 1.408% | 1.18% |
| 19 | PARADIGM CAPITAL MANAGEMENT INC/NY | 608K | $37.8M | 0.0% | 1.337% | 1.45% |
| 20 | TWO SIGMA INVESTMENTS, LP | 581K | $36.1M | β | 1.278% | 0.03% |
| 21 | GOLDMAN SACHS GROUP INC | 503K | $31.3M | -9.8% | 1.107% | 0.00% |
| 22 | FULLER & THALER ASSET MANAGEMENT, INC. | 475K | $29.5M | +3417.8% | 1.044% | 0.10% |
| 23 | NORTHERN TRUST CORP | 458K | $28.5M | -1.1% | 1.007% | 0.00% |
| 24 | BANK OF AMERICA CORP /DE/ | 454K | $28.2M | +502.4% | 0.998% | 0.00% |
| 25 | Bank of New York Mellon Corp | 444K | $27.6M | -30.1% | 0.975% | 0.01% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in UCTT β a direct measure of their conviction.
Filings activity in UCTT during Q1 2026, grouped by how each filer changed its position.
8 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 322 | +38% | 59.11% | +37.56 pp | $2.93B | +174% |
| Q4 2025 | 234 | +0.0% | 21.55% | 1.44 pp | $1.07B | 6.3% |
| Q3 2025 | 234 | +4.5% | 22.99% | +4.17 pp | $1.14B | +22% |
| Q2 2025 | 224 | +0.4% | 18.82% | +1.20 pp | $932M | +6.8% |
| Q1 2025 | 223 | 1.8% | 17.62% | 11.33 pp | $873M | 39% |
| Q4 2024 | 227 | 7.0% | 28.95% | 2.72 pp | $1.43B | 8.6% |
| Q3 2024 | 244 | +13% | 31.67% | 7.26 pp | $1.57B | 19% |
| Q2 2024 | 215 | β | 38.93% | β | $1.93B | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying UCTT stock.
Based on Q1 2026 13F filings, institutional ownership of Ultra Clean Holdings, Inc. stands at 59.1%, held across 322 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of UCTT, with approximately 6,832,619 shares worth $0.42B as of Q1 2026.
Yes β 2 widely-followed marquee investors appear among the top 25 institutional holders of UCTT, including SUSQUEHANNA INTERNATIONAL GROUP, LLP, TWO SIGMA INVESTMENTS, LP.
Our composite Smart Money Score for UCTT is 78 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
116 institutions opened new positions in UCTT during Q1 2026, while 28 fully exited. 185 added to existing positions and 19 trimmed.
UCTT institutional ownership rose by 37.56 percentage points quarter-over-quarter, with a net change of +88 holders.
The top 10 institutions account for 50.6% of all reported 13F value in UCTT, and the top 25 account for 73.8%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Ultra Clean Holdings, Inc. (UCTT) Institutional Ownership