Latest Period
Q1 2026
Security Snapshot
Ultra Clean Holdings, Inc. - Common stock, par value $0.001 per share (UCTT) Institutional Ownership
CUSIP: 90385V107
13F Institutional Holders and Ownership History from Q1 2014 to Q1 2026
Institutions Reporting
326
Shares (Excl. Options)
44,957,833
Price
$62.18
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- Security type / class
- Equity / Common stock, par value $0.001 per share
- Symbol
- UCTT on Nasdaq
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 44,957,833
- Total 13F value
- $2,794,072,121
- Portfolio coverage rank
- 0.01%
- Share change
- +2,736,879
- Value change
- +$243,119,730
- Number of holders
- 326
- Shares outstanding
- 45,482,214
- SEC-reported price per share
- $87.29
- Insider filing price
- $87.29
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- UCTT - Ultra Clean Holdings, Inc. - Common stock, par value $0.001 per share is tracked under CUSIP 90385V107.
- 326 institutions reported positions in Q1 2026.
- 8 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 232 to 326 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $1,075,526,506 to $2,794,072,121.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 326 institutions filings for Q1 2026.
Security key
90385V107
Latest holder period
Q1 2026
13F holders
326
13D/G owners
8
CIK / CUSIP context first
Open Q1 2026 holders
UCTT full holder history
Ultra Clean Holdings, Inc. SEC filings
Ultra Clean Holdings, Inc. company facts
Ultra Clean Holdings, Inc. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 90385V107:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
8
Security
UCTT
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 15% | $129,566,035 | 6,748,231 | BlackRock, Inc. | 31 Mar 2025 | |||
| VANGUARD PORTFOLIO MANAGEMENT LLC | 6.2% | $175,467,110 | 2,821,922 | Vanguard Portfolio Management | 31 Mar 2026 | |||
| FRONTIER CAPITAL MANAGEMENT CO LLC | 6.1% | +25% | $62,161,459 | +$12,999,846 | 2,754,163 | +26% | FRONTIER CAPITAL MANAGEMENT CO.,LLC | 30 Jun 2025 |
| DIMENSIONAL FUND ADVISORS LP | 4.7% | -6% | $48,298,829 | -$2,766,224 | 2,139,957 | -5.4% | Dimensional Fund Advisors LP | 30 Jun 2025 |
| FRONTIER CAPITAL MANAGEMENT CO LLC | 3.9% | -48% | $135,506,660 | -$130,574,234 | 1,787,451 | -49% | FRONTIER CAPITAL MANAGEMENT CO.,LLC | 31 Mar 2026 |
| Invesco Ltd. | 3.7% | -48% | $128,077,129 | -$129,664,287 | 1,689,449 | -50% | Invesco Ltd. | 31 Mar 2026 |
| SHAPIRO CAPITAL MANAGEMENT LLC | 2.8% | -69% | $48,001,190 | -$105,493,967 | 1,276,967 | -69% | SHAPIRO CAPITAL MANAGEMENT LLC | 31 Dec 2025 |
| Swedbank Robur Fonder AB | 2.7% | $23,255,366 | 1,211,217 | Swedbank Robur Fonder AB | 30 Sep 2024 |
As of 31 Mar 2026, 326 institutional investors reported holding 44,957,833 shares of Ultra Clean Holdings, Inc. - Common stock, par value $0.001 per share (UCTT). This represents 99% of the company’s total 45,482,214 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
69%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 15% | 6,832,619 | +1.7% | 0.01% | $424,852,251 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 6.2% | 2,802,250 | 0% | 0.01% | $174,243,905 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.2% | 1,916,501 | 0% | 0% | $119,168,032 |
| STATE STREET CORP | 4% | 1,837,824 | -0.79% | 0% | $114,275,896 |
| FRONTIER CAPITAL MANAGEMENT CO LLC | 3.9% | 1,787,451 | -49% | 1.1% | $111,143,676 |
| Invesco Ltd. | 3.6% | 1,659,949 | -51% | 0.02% | $103,215,629 |
| Boston Partners | 3.2% | 1,468,878 | 0.1% | $91,397,525 | |
| D. E. Shaw & Co., Inc. | 2.6% | 1,183,257 | +24% | 0.06% | $73,574,920 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.5% | 1,140,780 | +4.7% | 0% | $70,946,898 |
| Driehaus Capital Management LLC | 2.3% | 1,062,376 | +134% | 0.49% | $66,058,540 |
| DIMENSIONAL FUND ADVISORS LP | 2.2% | 1,011,778 | -34% | 0.01% | $62,892,225 |
| MORGAN STANLEY | 2% | 911,699 | +1.9% | 0% | $56,689,476 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.8% | 840,456 | +2.4% | 0.01% | $52,259,554 |
| ROYCE & ASSOCIATES LP | 1.7% | 759,497 | -31% | 0.47% | $47,225,523 |
| MILLENNIUM MANAGEMENT LLC | 1.5% | 685,436 | +22% | 0.03% | $42,620,410 |
| OBERWEIS ASSET MANAGEMENT INC/ | 1.4% | 640,476 | +1.9% | 1.2% | $39,824,798 |
| PARADIGM CAPITAL MANAGEMENT INC/NY | 1.3% | 608,200 | 0% | 1.4% | $37,817,876 |
| COOPER CREEK PARTNERS MANAGEMENT LLC | 1.3% | 586,773 | 1.8% | $36,486,000 | |
| TWO SIGMA INVESTMENTS, LP | 1.3% | 581,131 | 0.03% | $36,134,726 | |
| SG Americas Securities, LLC | 1.2% | 565,569 | +349% | 0.04% | $35,167,000 |
| GOLDMAN SACHS GROUP INC | 1.1% | 503,328 | -9.8% | 0% | $31,296,935 |
| FULLER & THALER ASSET MANAGEMENT, INC. | 1% | 475,073 | +3418% | 0.1% | $29,540,050 |
| NORTHERN TRUST CORP | 1% | 458,142 | -1.1% | 0% | $28,487,270 |
| BANK OF AMERICA CORP /DE/ | 1% | 454,020 | +502% | 0% | $28,230,965 |
| Bank of New York Mellon Corp | 0.98% | 443,653 | -30% | 0.01% | $27,586,318 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
49
Latest
Q1 2026
Rows shown
1-25 of 49
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 44,957,833 | $2,794,072,121 | +$243,119,730 | $62.18 | 326 |
| 2025 Q4 | 42,453,588 | $1,075,526,506 | +$11,403,000 | $25.33 | 232 |
| 2025 Q3 | 42,106,961 | $1,147,426,648 | -$594,269 | $27.25 | 237 |
| 2025 Q2 | 42,117,008 | $950,616,946 | +$5,489,078 | $22.57 | 227 |
| 2025 Q1 | 41,784,077 | $894,202,862 | -$446,813 | $21.41 | 223 |
| 2024 Q4 | 41,557,030 | $1,494,408,787 | +$28,692,244 | $35.95 | 229 |
| 2024 Q3 | 40,387,413 | $1,610,862,711 | -$51,943,011 | $39.93 | 246 |
| 2024 Q2 | 41,083,478 | $2,013,456,604 | +$9,499,461 | $49.00 | 216 |
| 2024 Q1 | 40,921,838 | $1,879,492,158 | +$49,137,737 | $45.94 | 200 |
| 2023 Q4 | 40,310,226 | $1,376,559,065 | +$17,245,047 | $34.14 | 194 |
| 2023 Q3 | 40,090,698 | $1,188,834,231 | -$4,119,032 | $29.67 | 201 |
| 2023 Q2 | 40,145,647 | $1,543,217,621 | +$5,625,042 | $38.46 | 198 |
| 2023 Q1 | 40,066,391 | $1,327,708,790 | +$5,121,102 | $33.16 | 203 |
| 2022 Q4 | 40,088,707 | $1,329,445,550 | +$34,219,709 | $33.15 | 212 |
| 2022 Q3 | 39,127,233 | $1,008,427,447 | +$11,235,754 | $25.75 | 199 |
| 2022 Q2 | 38,481,463 | $1,146,359,578 | +$17,219,538 | $29.77 | 224 |
| 2022 Q1 | 37,663,904 | $1,596,328,671 | -$5,198,827 | $42.39 | 248 |
| 2021 Q4 | 37,634,227 | $2,158,570,250 | +$18,407,465 | $57.36 | 268 |
| 2021 Q3 | 37,334,468 | $1,590,401,358 | -$52,499,372 | $42.60 | 230 |
| 2021 Q2 | 38,154,193 | $2,049,721,085 | +$154,253,781 | $53.72 | 257 |
| 2021 Q1 | 35,311,728 | $2,048,428,315 | +$66,461,284 | $58.04 | 233 |
| 2020 Q4 | 35,208,064 | $1,097,913,370 | +$103,821,084 | $31.15 | 219 |
| 2020 Q3 | 32,389,576 | $695,700,758 | -$36,044,481 | $21.46 | 196 |
| 2020 Q2 | 33,970,362 | $769,190,686 | -$11,098,097 | $22.63 | 195 |
| 2020 Q1 | 34,815,642 | $480,321,250 | -$11,582,688 | $13.80 | 172 |