Ultra Clean Holdings, Inc.
DE ˙ DB ˙ US90385V1070
76,52 € ↓ -4,30 (-5,32%)
2026-06-05
DEL PRIS
SecurityDE:UCE / Ultra Clean Holdings, Inc.
InstitutionQuadrature Capital Ltd
Latest Disclosed Ownership15,925 shares
Latest Disclosed Value $ 990,217
Quadrature Capital Ltd reports 66.09% increase in ownership of UCE / Ultra Clean Holdings, Inc.

On May 15, 2026 - Quadrature Capital Ltd filed a 13F-HR form disclosing ownership of 15,925 shares of Ultra Clean Holdings, Inc. (DE:UCE) valued at $764,400 USD as of March 31, 2026. The entity filed a previous 13F-HR on August 14, 2020 disclosing 9,588 shares of Ultra Clean Holdings, Inc.. This represents a change in shares of 66.09% during the quarter. The current value of the position is $1,218,581 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)
2026-05-15 2026-03-31 13F ULTRA CLEAN HLDGS COM 90385V107 15,925 6,337 66.09 990 356.22 0.0118
2020-08-14 2020-06-30 13F ULTRA CLEAN HLDGS COM 90385V107 9,588 9,588 217 0.0257
2018-05-11 2018-03-31 13F ULTRA CLEAN HLDGS COM 90385V107 0 -12,363 -100.00 0 -100.00
2018-02-12 2017-12-31 13F ULTRA CLEAN HLDGS COM 90385V107 12,363 12,363 285 0.0254
2020-08-26 2017-09-30 13F/A-1 ULTRA CLEAN HLDGS COM 90385V107 0 -54,172 -100.00 0 -100.00
2017-11-13 2017-09-30 13F ULTRA CLEAN HLDGS COM 90385V107 0 -54,172 0 0.0000
2017-08-14 2017-06-30 13F ULTRA CLEAN HLDGS COM 90385V107 54,172 54,172 1,016 0.0783
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.