Ultra Clean Holdings, Inc.
DE ˙ DB ˙ US90385V1070
76,52 € ↓ -4,30 (-5,32%)
2026-06-05
DEL PRIS
SecurityDE:UCE / Ultra Clean Holdings, Inc.
InstitutionFuller & Thaler Asset Management, Inc.
Latest Disclosed Ownership475,073 shares
Latest Disclosed Value $ 29,540,050
Fuller & Thaler Asset Management, Inc. reports 3,417.76% increase in ownership of UCE / Ultra Clean Holdings, Inc.

On May 14, 2026 - Fuller & Thaler Asset Management, Inc. filed a 13F-HR form disclosing ownership of 475,073 shares of Ultra Clean Holdings, Inc. (DE:UCE) valued at $22,803,504 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on February 18, 2026 disclosing 13,505 shares of Ultra Clean Holdings, Inc.. This represents a change in shares of 3,417.76% during the quarter. The current value of the position is $36,352,586 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F ULTRA CLEAN HLDGS COM 90385V107 475,073 461,568 3,417.76 29,540 8,537.43 0.0995
2026-02-18 2025-12-31 13F/A-1 Ultra Clean Holdings Com 90385V107 13,505 -750 -5.26 342 -11.86 0.0012
2026-02-12 2025-12-31 13F Ultra Clean Holdings Com 90385V107 13,505 -750 342 0.0012
2025-11-13 2025-09-30 13F ULTRA CLEAN HLDGS COM 90385V107 14,255 0 0.00 388 20.87 0.0013
2025-08-14 2025-06-30 13F Ultra Clean Holdings Com 90385V107 14,255 -3,270 -18.66 322 -14.40 0.0012
2025-05-13 2025-03-31 13F Ultra Clean Holdings Com 90385V107 17,525 17,525 375 0.0015
2022-08-12 2022-06-30 13F Ultra Clean Holdings Com 90385V107 0 -675 -100.00 0 -100.00
2022-05-13 2022-03-31 13F Ultra Clean Holdings Com 90385V107 675 -264 -28.12 29 -46.30 0.0002
2022-02-09 2021-12-31 13F Ultra Clean Holdings Com 90385V107 939 0 0.00 54 35.00 0.0003
2021-11-10 2021-09-30 13F Ultra Clean Holdings Com 90385V107 939 -264,135 -99.65 40 -99.72 0.0003
2021-08-13 2021-06-30 13F Ultra Clean Holdings Com 90385V107 265,074 -9,013 -3.29 14,240 -10.49 0.0924
2021-05-13 2021-03-31 13F Ultra Clean Holdings Com 90385V107 274,087 5,491 2.04 15,908 90.13 0.1117
2021-02-11 2020-12-31 13F Ultra Clean Holdings Com 90385V107 268,596 42,446 18.77 8,367 72.41 0.0774
2020-11-09 2020-09-30 13F Ultra Clean Holdings Com 90385V107 226,150 226,150 4,853 0.0614
2018-08-07 2018-06-30 13F Ultra Clean Holdings Com 90385V107 0 -133,432 -100.00 0 -100.00
2018-05-14 2018-03-31 13F Ultra Clean Holdings Com 90385V107 133,432 -665,413 -83.30 2,569 -86.07 0.0301
2018-02-14 2017-12-31 13F/A-1 Ultra Clean Holdings Com 90385V107 798,845 169,045 26.84 18,445 -4.35 0.2218
2018-02-12 2017-12-31 13F Ultra Clean Holdings Com 90385V107 798,845 169,045 18,445
2017-11-08 2017-09-30 13F Ultra Clean Holdings Com 90385V107 629,800 94,000 17.54 19,284 91.96 0.2359
2017-08-11 2017-06-30 13F Ultra Clean Holdings Com 90385V107 535,800 142,500 36.23 10,046 51.41 0.1316
2017-05-15 2017-03-31 13F Ultra Clean Holdings Com 90385V107 393,300 33,000 9.16 6,635 89.84 0.0905
2017-02-14 2016-12-31 13F/A-1 Ultra Clean Holdings Com 90385V107 360,300 64,000 21.60 3,495 59.15 0.0527
2017-02-07 2016-12-31 13F Ultra Clean Holdings Com 90385V107 360,300 3,495
2016-11-14 2016-09-30 13F Ultra Clean Holdings Com 90385V107 296,300 -18,800 -5.97 2,196 22.48 0.0363
2016-08-05 2016-06-30 13F Ultra Clean Holdings Com 90385V107 315,100 0 0.00 1,793 6.16 0.0307
2016-05-12 2016-03-31 13F Ultra Clean Holdings Com 90385V107 315,100 -62,600 -16.57 1,689 -12.67 0.0328
2016-02-12 2015-12-31 13F Ultra Clean Holdings Com 90385V107 377,700 -18,000 -4.55 1,934 -14.84 0.0413
2015-11-12 2015-09-30 13F Ultra Clean Holdings Com 90385V107 395,700 200 0.05 2,271 -7.83 0.0587
2015-08-17 2015-06-30 13F Ultra Clean Holdings Com 90385V107 395,500 395,500 2,464 0.0696
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.