Ultra Clean Holdings, Inc.
DE ˙ DB ˙ US90385V1070
76,52 € ↓ -4,30 (-5,32%)
2026-06-05
DEL PRIS
SecurityDE:UCE / Ultra Clean Holdings, Inc.
InstitutionRhumbline Advisers
Latest Disclosed Ownership127,703 shares
Latest Disclosed Value $ 7,940,550
Rhumbline Advisers reports 0.99% increase in ownership of UCE / Ultra Clean Holdings, Inc.

On May 12, 2026 - Rhumbline Advisers filed a 13F-HR form disclosing ownership of 127,703 shares of Ultra Clean Holdings, Inc. (DE:UCE) valued at $6,129,744 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 126,457 shares of Ultra Clean Holdings, Inc.. This represents a change in shares of 0.99% during the quarter. The current value of the position is $9,771,834 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)
2026-05-12 2026-03-31 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 127,703 1,246 0.99 7,941 147.89 0.0068
2026-02-13 2025-12-31 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 126,457 -7,681 -5.73 3,203 -12.37 0.0026
2025-11-06 2025-09-30 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 134,138 -4,268 -3.08 3,655 17.03 0.0029
2025-08-12 2025-06-30 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 138,406 12,308 9.76 3,124 15.71 0.0027
2025-05-29 2025-03-31 13F/A-1 ULTRA CLEAN HLDGS INC COM COM 90385V107 126,098 -1,615 -1.26 2,700 -41.21 0.0025
2025-04-08 2025-03-31 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 126,098 -1,615 2,700 0.0025
2025-05-29 2024-12-31 13F/A-1 ULTRA CLEAN HLDGS INC COM COM 90385V107 127,713 1,131 0.89 4,591 -9.16 0.0041
2025-01-30 2024-12-31 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 127,713 1,131 4,591 0.0041
2024-11-12 2024-09-30 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 126,582 -5,241 -3.98 5,054 -21.75 0.0046
2024-08-01 2024-06-30 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 131,823 -10,116 -7.13 6,459 -0.94 0.0061
2024-05-09 2024-03-31 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 141,939 313 0.22 6,521 34.85 0.0063
2024-02-08 2023-12-31 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 141,626 3,117 2.25 4,835 17.67 0.0051
2023-11-09 2023-09-30 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 138,509 -1,128 -0.81 4,110 -23.48 0.0048
2023-08-08 2023-06-30 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 139,637 -1,347 -0.96 5,370 134,150.00 0.0060
2023-05-11 2023-03-31 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 140,984 6,387 4.75 5 -99.91 0.0058
2023-02-14 2022-12-31 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 134,597 5,651 4.38 4,462 34.40 0.0060
2022-11-10 2022-09-30 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 128,946 5,033 4.06 3,320 -10.00 0.0049
2022-08-11 2022-06-30 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 123,913 14,524 13.28 3,689 -20.44 0.0054
2022-05-12 2022-03-31 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 109,389 8,380 8.30 4,637 -19.97 0.0060
2022-02-10 2021-12-31 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 101,009 -687 -0.68 5,794 33.75 0.0071
2021-11-12 2021-09-30 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 101,696 -15,065 -12.90 4,332 -30.93 0.0059
2021-08-05 2021-06-30 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 116,761 3,639 3.22 6,272 -4.48 0.0082
2021-05-06 2021-03-31 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 113,122 2,626 2.38 6,566 90.76 0.0089
2021-02-10 2020-12-31 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 110,496 2,371 2.19 3,442 48.36 0.0048
2020-11-12 2020-09-30 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 108,125 -9,564 -8.13 2,320 -12.88 0.0036
2020-08-13 2020-06-30 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 117,689 -25,046 -17.55 2,663 35.18 0.0044
2020-05-06 2020-03-31 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 142,735 8,380 6.24 1,970 -37.52 0.0041
2020-02-05 2019-12-31 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 134,355 8,058 6.38 3,153 70.62 0.0053
2019-10-23 2019-09-30 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 126,297 8,782 7.47 1,848 12.96 0.0034
2019-08-14 2019-06-30 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 117,515 3,560 3.12 1,636 38.76 0.0031
2019-05-01 2019-03-31 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 113,955 857 0.76 1,179 23.07 0.0023
2019-01-31 2018-12-31 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 113,098 19,049 20.25 958 -18.81 0.0021
2018-11-07 2018-09-30 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 94,049 132 0.14 1,180 -24.31 0.0023
2018-08-06 2018-06-30 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 93,917 7,103 8.18 1,559 -6.70 0.0031
2018-05-02 2018-03-31 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 86,814 54,786 171.06 1,671 125.81 0.0035
2018-02-09 2017-12-31 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 32,028 -5,916 -15.59 740 -36.32 0.0015
2017-11-06 2017-09-30 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 37,944 15 0.04 1,162 63.43 0.0025
2017-08-02 2017-06-30 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 37,929 -3,840 -9.19 711 0.85 0.0016
2017-05-02 2017-03-31 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 41,769 1,433 3.55 705 80.31 0.0016
2017-01-27 2016-12-31 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 40,336 2,173 5.69 391 38.16 0.0010
2016-11-08 2016-09-30 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 38,163 700 1.87 283 32.86 0.0008
2016-08-11 2016-06-30 13F ULTRA CLEAN HLDGS INC COM COM 90385V107 37,463 -12,900 -25.61 213 -21.11 0.0006
2016-05-02 2016-03-31 13F ULTRA CLEAN HOLDINGS COMMON ST COM 90385V107 50,363 4,435 9.66 270 14.89 0.0008
2016-02-03 2015-12-31 13F ULTRA CLEAN HOLDINGS COMMON ST COM 90385V107 45,928 1,675 3.79 235 -7.48 0.0008
2015-11-04 2015-09-30 13F ULTRA CLEAN HOLDINGS COMMON ST COM 90385V107 44,253 2,340 5.58 254 -2.68 0.0009
2015-08-04 2015-06-30 13F ULTRA CLEAN HOLDINGS COMMON ST COM 90385V107 41,913 3,460 9.00 261 -5.09 0.0008
2015-05-12 2015-03-31 13F ULTRA CLEAN HOLDINGS COMMON ST COM 90385V107 38,453 1,400 3.78 275 -20.06 0.0008
2015-02-06 2014-12-31 13F ULTRA CLEAN HOLDINGS COMMON ST COM 90385V107 37,053 4,575 14.09 344 18.21 0.0010
2014-11-12 2014-09-30 13F ULTRA CLEAN HOLDINGS COMMON ST COM 90385V107 32,478 0 0.00 291 -1.02 0.0009
2014-08-06 2014-06-30 13F ULTRA CLEAN HOLDINGS COMMON ST COM 90385V107 32,478 1,223 3.91 294 -28.47 0.0009
2014-05-06 2014-03-31 13F ULTRA CLEAN HOLDINGS COMMON ST COM 90385V107 31,255 -1,160 -3.58 411 26.46 0.0012
2014-02-03 2013-12-31 13F ULTRA CLEAN HOLDINGS COMMON ST COM 90385V107 32,415 -2,000 -5.81 325 36.55 0.0010
2013-11-05 2013-09-30 13F ULTRA CLEAN HOLDINGS COMMON ST COM 90385V107 34,415 -243 -0.70 238 13.33 0.0007
2013-08-07 2013-06-30 13F ULTRA CLEAN HOLDINGS COMMON ST COM 90385V107 34,658 34,658 210 0.0007
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.