Ultra Clean Holdings, Inc.
DE ˙ DB ˙ US90385V1070
76,52 € ↓ -4,30 (-5,32%)
2026-06-05
DEL PRIS
SecurityDE:UCE / Ultra Clean Holdings, Inc.
InstitutionArizona State Retirement System
Latest Disclosed Ownership12,466 shares
Latest Disclosed Value $ 775,136
Arizona State Retirement System reports 1.42% decrease in ownership of UCE / Ultra Clean Holdings, Inc.

On May 1, 2026 - Arizona State Retirement System filed a 13F-HR form disclosing ownership of 12,466 shares of Ultra Clean Holdings, Inc. (DE:UCE) valued at $598,368 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 28, 2026 disclosing 12,646 shares of Ultra Clean Holdings, Inc.. This represents a change in shares of -1.42% during the quarter. The current value of the position is $953,898 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)
2026-05-01 2026-03-31 13F ULTRA CLEAN HLDGS COM 90385V107 12,466 -180 -1.42 775 142.19 0.0045
2026-01-28 2025-12-31 13F ULTRA CLEAN HLDGS COM 90385V107 12,646 -697 -5.22 320 -11.85 0.0017
2025-11-03 2025-09-30 13F ULTRA CLEAN HLDGS COM 90385V107 13,343 191 1.45 364 22.64 0.0019
2025-08-13 2025-06-30 13F ULTRA CLEAN HLDGS COM 90385V107 13,152 237 1.84 297 7.25 0.0017
2025-05-01 2025-03-31 13F ULTRA CLEAN HLDGS COM 90385V107 12,915 -130 -1.00 277 -41.03 0.0018
2025-02-06 2024-12-31 13F ULTRA CLEAN HLDGS COM 90385V107 13,045 115 0.89 469 -9.30 0.0029
2024-11-12 2024-09-30 13F ULTRA CLEAN HLDGS COM 90385V107 12,930 429 3.43 516 -15.69 0.0033
2024-08-05 2024-06-30 13F ULTRA CLEAN HLDGS COM 90385V107 12,501 180 1.46 613 8.13 0.0041
2024-05-07 2024-03-31 13F ULTRA CLEAN HLDGS COM 90385V107 12,321 -204 -1.63 566 32.55 0.0039
2024-01-24 2023-12-31 13F ULTRA CLEAN HLDGS COM 90385V107 12,525 -202 -1.59 428 13.26 0.0032
2023-11-07 2023-09-30 13F ULTRA CLEAN HLDGS COM 90385V107 12,727 147 1.17 378 -21.95 0.0032
2023-08-01 2023-06-30 13F ULTRA CLEAN HLDGS COM 90385V107 12,580 -602 -4.57 484 10.53 0.0039
2023-04-27 2023-03-31 13F ULTRA CLEAN HOLDINGS COM 90385V107 13,182 363 2.83 437 3.07 0.0039
2023-02-08 2022-12-31 13F ULTRA CLEAN HOLDINGS COM 90385V107 12,819 563 4.59 425 34.18 0.0041
2022-11-07 2022-09-30 13F ULTRA CLEAN HLDGS COM 90385V107 12,256 88 0.72 316 -12.71 0.0033
2022-07-28 2022-06-30 13F ULTRA CLEAN HLDGS COM 90385V107 12,168 31 0.26 362 -29.57 0.0035
2022-05-04 2022-03-31 13F ULTRA CLEAN HLDGS COM 90385V107 12,137 106 0.88 514 -25.51 0.0041
2022-02-04 2021-12-31 13F ULTRA CLEAN HLDGS COM 90385V107 12,031 100 0.84 690 35.83 0.0053
2021-11-12 2021-09-30 13F ULTRA CLEAN HOLDINGS COM 90385V107 11,931 891 8.07 508 -14.33 0.0041
2021-08-02 2021-06-30 13F ULTRA CLEAN HOLDINGS COM 90385V107 11,040 -750 -6.36 593 -13.30 0.0048
2021-05-06 2021-03-31 13F ULTRA CLEAN HOLDINGS COM 90385V107 11,790 219 1.89 684 90.00 0.0060
2021-01-28 2020-12-31 13F ULTRA CLEAN HOLDINGS COM 90385V107 11,571 -469 -3.90 360 39.53 0.0033
2020-11-05 2020-09-30 13F ULTRA CLEAN HOLDINGS COM 90385V107 12,040 3,056 34.02 258 27.09 0.0026
2020-08-04 2020-06-30 13F ULTRA CLEAN HOLDINGS COM 90385V107 8,984 8,984 203 0.0029
2020-05-05 2020-03-31 13F ULTRA CLEAN HOLDINGS COM 90385V107 0 -26,544 -100.00 0 -100.00
2020-01-27 2019-12-31 13F ULTRA CLEAN HOLDINGS COM 90385V107 26,544 -19,900 -42.85 623 -8.38 0.0075
2019-10-31 2019-09-30 13F ULTRA CLEAN HOLDINGS COM 90385V107 46,444 -14,571 -23.88 680 -19.91 0.0083
2019-07-25 2019-06-30 13F ULTRA CLEAN HOLDINGS COM 90385V107 61,015 831 1.38 849 36.28 0.0098
2019-04-29 2019-03-31 13F ULTRA CLEAN HOLDINGS COM 90385V107 60,184 103 0.17 623 22.40 0.0074
2019-01-28 2018-12-31 13F ULTRA CLEAN HOLDINGS COM 90385V107 60,081 3,671 6.51 509 -28.11 0.0065
2018-10-29 2018-09-30 13F ULTRA CLEAN HOLDINGS COM 90385V107 56,410 0 0.00 708 -24.36 0.0067
2018-08-07 2018-06-30 13F ULTRA CLEAN HOLDINGS COM 90385V107 56,410 -4,190 -6.91 936 -19.79 0.0094
2018-05-14 2018-03-31 13F ULTRA CLEAN HOLDINGS COM 90385V107 60,600 60,600 1,167 0.0118
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.