UCTT — Ultra Clean Holdings com

Ownership history in OBERWEIS ASSET MANAGEMENT INC/  ·  35 quarters on record

AI Ownership Summary

OBERWEIS ASSET MANAGEMENT INC/ reported Ultra Clean Holdings com (UCTT) in 35 quarterly 13F filings from 2023 Q4 through 2025 Q4. Peak portfolio weight reached 1.06% in 2024 Q1. The latest visible filing shows UCTT at 0.58% of the fund.

This page tracks quarterly shares, estimated market value, portfolio weight, filing dates, and disclosure-aligned stock prices directly from SEC EDGAR 13F filings. Older history is available after unlock; the visible window still shows the most recent pattern.

What this UCTT ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was OBERWEIS ASSET MANAGEMENT INC/'s position in Ultra Clean Holdings com, and how did that conviction change over time? You can read the holding window, peak weight, latest reported size, disclosure timing, and quarter-by-quarter changes without piecing the story together from raw SEC rows.

Freshest filing
Latest Reported Filing
2025 Q4

UCTT was reported at 0.58% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
1.06% in 2024 Q1

Peak weight helps separate a token disclosure from a real conviction holding the fund genuinely cared about.

Time in book
Holding Window
2023 Q4 to 2025 Q4

Longer holding windows often tell a very different story from short-lived tactical trades or one-quarter experiments.

Decision context
Why It Matters
Position size beats headlines

Knowing that a fund owned a stock is useful. Knowing whether it was a 0.20% placeholder or a true high-conviction position is where the signal actually starts.

UCTT stock page OBERWEIS ASSET MANAGEMENT INC/ fund profile OBERWEIS ASSET MANAGEMENT INC/ full holdings
How OBERWEIS ASSET MANAGEMENT INC/ held UCTT — position size vs. price
% of Fund (quarterly)    UCTT price (quarter-end, indexed to 100)
📋 Quarterly Holdings History 9 quarters  ▾
Quarter Action Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2025 Q4 ADDED 628,500 +15,200 +2.5% 0.58% $15.9M 2026-02-14 (Est.) $55.39
2025 Q3 UNCHANGED 613,300 — 0% 0.64% $16.7M 2025-11-17 $22.82
2025 Q2 UNCHANGED 613,300 — 0% 0.60% $13.8M 2025-08-14 $23.54
2025 Q1 UNCHANGED 613,300 — 0% 0.65% $13.1M 2025-05-15 $22.52
2024 Q4 ADDED 613,300 +173,200 +39.4% 1.04% $22.0M 2025-02-14 $36.95
2024 Q3 ADDED 440,100 +120,500 +37.7% 0.90% $17.6M 2024-11-14 $35.10
2024 Q2 UNCHANGED 319,600 — 0% 0.96% $15.7M 2024-08-14 $37.10
2024 Q1 ADDED 319,600 +72,500 +29.3% 1.06% $14.7M 2024-05-15 $45.25
2023 Q4 ADDED 247,100 +29,000 +13.3% 0.79% $8.4M 2024-02-14 $42.38
26 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding UCTT

As of 2025 Q4 — sorted by position size

Divisar Capital Management LLC 3Y 7Y 6.76% Goodman Financial Corp 3Y 7Y 2.68% 4D Advisors, LLC 1.87% SHAPIRO CAPITAL MANAGEMENT LLC 3Y 7Y 1.71% FRONTIER CAPITAL MANAGEMENT CO LLC 3Y 7Y 0.94% Optimize Financial Inc 0.73% PARADIGM CAPITAL MANAGEMENT INC/NY 3Y 7Y 0.65% Bridge City Capital, LLC 3Y 7Y 0.6% GRACE & WHITE INC /NY 3Y 7Y 0.52% AWM Investment Company, Inc. 3Y 7Y 0.34%

FAQ About OBERWEIS ASSET MANAGEMENT INC/ and UCTT

These are the practical questions this page is built to answer before you even open the full history table.

How long has OBERWEIS ASSET MANAGEMENT INC/ reported owning UCTT?

OBERWEIS ASSET MANAGEMENT INC/ reported UCTT across 9 quarterly 13F filings, from 2023 Q4 through 2025 Q4.

What was the largest reported UCTT position in OBERWEIS ASSET MANAGEMENT INC/'s portfolio?

The largest reported portfolio weight for UCTT was 1.06% in 2024 Q1.

What is the latest reported UCTT position on this page?

The most recent filing on this page is 2025 Q4, when OBERWEIS ASSET MANAGEMENT INC/ reported 628,500 shares, equal to 0.58% of portfolio, with an estimated market value of $15.9M.

What does the chart on this UCTT ownership page compare?

The chart compares OBERWEIS ASSET MANAGEMENT INC/'s quarterly UCTT portfolio weight with the stock's indexed share price, so you can see whether the fund was building, trimming, or holding the position as price moved.

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