Ultra Clean Holdings, Inc.
DE ˙ DB ˙ US90385V1070
76,52 € ↓ -4,30 (-5,32%)
2026-06-05
DEL PRIS
SecurityDE:UCE / Ultra Clean Holdings, Inc.
InstitutionPrincipal Financial Group Inc
Latest Disclosed Ownership220,650 shares
Latest Disclosed Value $ 13,720,018
Principal Financial Group Inc reports 2.01% increase in ownership of UCE / Ultra Clean Holdings, Inc.

On May 4, 2026 - Principal Financial Group Inc filed a 13F-HR form disclosing ownership of 220,650 shares of Ultra Clean Holdings, Inc. (DE:UCE) valued at $10,591,200 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 216,312 shares of Ultra Clean Holdings, Inc.. This represents a change in shares of 2.01% during the quarter. The current value of the position is $16,884,138 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)
2026-05-04 2026-03-31 13F ULTRA CLEAN HLDGS COM 90385V107 220,650 4,338 2.01 13,720 150.41 0.0073
2026-02-02 2025-12-31 13F ULTRA CLEAN HLDGS COM 90385V107 216,312 -2,625 -1.20 5,479 -8.16 0.0028
2025-11-04 2025-09-30 13F ULTRA CLEAN HLDGS COM 90385V107 218,937 -4,903 -2.19 5,966 18.09 0.0030
2025-08-08 2025-06-30 13F ULTRA CLEAN HLDGS COM 90385V107 223,840 -1,095 -0.49 5,052 4.92 0.0027
2025-04-28 2025-03-31 13F ULTRA CLEAN HLDGS COM 90385V107 224,935 5,114 2.33 4,816 -39.07 0.0027
2025-01-31 2024-12-31 13F ULTRA CLEAN HLDGS COM 90385V107 219,821 6,546 3.07 7,903 -7.21 0.0043
2024-10-31 2024-09-30 13F ULTRA CLEAN HLDGS COM 90385V107 213,275 -9,813 -4.40 8,516 -22.09 0.0047
2024-07-29 2024-06-30 13F ULTRA CLEAN HLDGS COM 90385V107 223,088 -9,615 -4.13 10,931 2.25 0.0065
2024-04-29 2024-03-31 13F ULTRA CLEAN HLDGS COM 90385V107 232,703 -904 -0.39 10,690 34.04 0.0063
2024-02-07 2023-12-31 13F ULTRA CLEAN HLDGS COM 90385V107 233,607 -7,195 -2.99 7,975 11.63 0.0051
2023-11-02 2023-09-30 13F ULTRA CLEAN HLDGS COM 90385V107 240,802 -13,018 -5.13 7,145 -26.81 0.0051
2023-08-07 2023-06-30 13F ULTRA CLEAN HLDGS COM 90385V107 253,820 -20,713 -7.54 9,762 7.23 0.0067
2023-05-09 2023-03-31 13F ULTRA CLEAN HLDGS COM 90385V107 274,533 -4,428 -1.59 9,104 -1.56 0.0065
2023-02-09 2022-12-31 13F ULTRA CLEAN HLDGS COM 90385V107 278,961 -1,566 -0.56 9,248 28.00 0.0070
2022-11-09 2022-09-30 13F ULTRA CLEAN HLDGS COM 90385V107 280,527 631 0.23 7,224 -13.31 0.0057
2022-08-10 2022-06-30 13F ULTRA CLEAN HLDGS COM 90385V107 279,896 -24,507 -8.05 8,333 -35.42 0.0062
2022-05-09 2022-03-31 13F ULTRA CLEAN HLDGS COM 90385V107 304,403 -2,207 -0.72 12,904 -26.63 0.0051
2022-05-09 2022-03-31 13F ULTRA CLEAN HLDGS COM 90385V107 296,341 12,562
2022-02-09 2021-12-31 13F ULTRA CLEAN HLDGS COM 90385V107 306,610 -7,840 -2.49 17,587 31.29 0.0105
2021-11-09 2021-09-30 13F ULTRA CLEAN HLDGS COM 90385V107 314,450 4,217 1.36 13,396 -19.62 0.0087
2021-08-10 2021-06-30 13F ULTRA CLEAN HLDGS COM 90385V107 310,233 22,538 7.83 16,666 -0.19 0.0108
2021-05-10 2021-03-31 13F ULTRA CLEAN HLDGS COM 90385V107 287,695 -1,066 -0.37 16,698 85.66 0.0118
2021-02-23 2020-12-31 13F/A-1 ULTRA CLEAN HLDGS COM 90385V107 288,761 1,867 0.65 8,994 46.08 0.0067
2021-02-08 2020-12-31 13F ULTRA CLEAN HLDGS COM 90385V107 288,761 1,867 8,994 3,538.3782
2020-11-06 2020-09-30 13F ULTRA CLEAN HLDGS COM 90385V107 286,894 -12,610 -4.21 6,157 -9.16 0.0052
2020-08-05 2020-06-30 13F ULTRA CLEAN HLDGS COM 90385V107 299,504 -23,954 -7.41 6,778 51.84 0.0060
2020-05-12 2020-03-31 13F ULTRA CLEAN HLDGS COM 90385V107 323,458 -12,408 -3.69 4,464 -43.37 0.0049
2020-02-05 2019-12-31 13F ULTRA CLEAN HLDGS COM 90385V107 335,866 22,292 7.11 7,883 71.78 0.0066
2019-11-13 2019-09-30 13F ULTRA CLEAN HLDGS COM 90385V107 313,574 -3,560 -1.12 4,589 3.94 0.0040
2019-08-12 2019-06-30 13F ULTRA CLEAN HLDGS COM 90385V107 317,134 1,953 0.62 4,415 35.35 0.0040
2019-05-10 2019-03-31 13F ULTRA CLEAN HLDGS COM 90385V107 315,181 -3,228 -1.01 3,262 20.95 0.0030
2019-02-14 2018-12-31 13F ULTRA CLEAN HLDGS COM 90385V107 318,409 -44,537 -12.27 2,697 -40.79 0.0029
2018-11-14 2018-09-30 13F ULTRA CLEAN HLDGS COM 90385V107 362,946 13,387 3.83 4,555 -21.51 0.0040
2018-08-13 2018-06-30 13F ULTRA CLEAN HLDGS COM 90385V107 349,559 20,115 6.11 5,803 -8.50 0.0053
2018-05-14 2018-03-31 13F ULTRA CLEAN HLDGS COM 90385V107 329,444 297,826 941.95 6,342 768.77 0.0061
2018-02-12 2017-12-31 13F ULTRA CLEAN HLDGS COM 90385V107 31,618 19,443 159.70 730 95.71 0.0007
2017-11-02 2017-09-30 13F ULTRA CLEAN HLDGS COM 90385V107 12,175 0 0.00 373 63.60 0.0004
2017-08-08 2017-06-30 13F ULTRA CLEAN HLDGS COM 90385V107 12,175 12,175 228 0.0002
2015-02-12 2014-12-31 13F ULTRA CLEAN HLDGS COM 90385V107 0 -10,861 -100.00 0 -100.00
2014-11-13 2014-09-30 13F ULTRA CLEAN HLDGS COM 90385V107 10,861 0 0.00 97 -1.02 0.0002
2014-08-12 2014-06-30 13F ULTRA CLEAN HLDGS COM 90385V107 10,861 -903 -7.68 98 -16.95 0.0002
2014-02-12 2013-12-31 13F ULTRA CLEAN HLDGS COM 90385V107 11,764 -217 -1.81 118 42.17 0.0002
2013-11-05 2013-09-30 13F ULTRA CLEAN HLDGS COM 90385V107 11,981 -767 -6.02 83 7.79 0.0002
2013-08-12 2013-06-30 13F ULTRA CLEAN HLDGS COM 90385V107 12,748 12,748 77 0.0002
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.