Ultra Clean Holdings, Inc.
DE ˙ DB ˙ US90385V1070
76,52 € ↓ -4,30 (-5,32%)
2026-06-05
DEL PRIS
SecurityDE:UCE / Ultra Clean Holdings, Inc.
InstitutionGAMMA Investing LLC
Latest Disclosed Ownership7,051 shares
Latest Disclosed Value $ 438,431
GAMMA Investing LLC reports 6.08% increase in ownership of UCE / Ultra Clean Holdings, Inc.

On April 6, 2026 - GAMMA Investing LLC filed a 13F-HR form disclosing ownership of 7,051 shares of Ultra Clean Holdings, Inc. (DE:UCE) valued at $338,448 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 5, 2026 disclosing 6,647 shares of Ultra Clean Holdings, Inc.. This represents a change in shares of 6.08% during the quarter. The current value of the position is $539,543 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-04-06 2026-03-31 13F ULTRA CLEAN HLDGS INC COM Common Stock 90385V107 7,051 404 6.08 438 160.71 0.0205
2026-01-05 2025-12-31 13F ULTRA CLEAN HLDGS INC COM Common Stock 90385V107 6,647 2,119 46.80 168 36.59 0.0085
2025-10-02 2025-09-30 13F ULTRA CLEAN HLDGS INC COM Common Stock 90385V107 4,528 172 3.95 123 25.51 0.0068
2025-07-14 2025-06-30 13F ULTRA CLEAN HLDGS INC COM Common Stock 90385V107 4,356 2,995 220.06 98 237.93 0.0062
2025-04-15 2025-03-31 13F/A-1 ULTRA CLEAN HLDGS INC COM Common Stock 90385V107 1,361 133 10.83 29 -34.09 0.0022
2025-04-07 2025-03-31 13F ULTRA CLEAN HLDGS INC COM Common Stock 90385V107 29,139 27,911 1 0.0073
2025-01-03 2024-12-31 13F ULTRA CLEAN HLDGS INC COM Common Stock 90385V107 1,228 31 2.59 44 -6.38 0.0038
2024-10-04 2024-09-30 13F ULTRA CLEAN HLDGS INC COM Common Stock 90385V107 1,197 575 48 0.0047
2024-10-07 2024-09-30 13F ULTRA CLEAN HLDGS INC COM Common Stock 90385V107 1,197 575 92.44 48 56.67 0.0047
2024-07-02 2024-06-30 13F ULTRA CLEAN HLDGS INC COM Common Stock 90385V107 622 213 52.08 30 66.67 0.0042
2024-04-05 2024-03-31 13F ULTRA CLEAN HLDGS INC COM Common Stock 90385V107 409 106 34.98 19 63.64 0.0038
2024-02-01 2023-12-31 13F ULTRA CLEAN HLDGS INC COM Common Stock 90385V107 303 303 12 0.0031
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.