Ultra Clean Holdings, Inc. (UCTT)
UCTT moved a median of 0.00% 30 minutes after news, and +0.04% by the close. How UCTT actually reacts to news — the realized, point-in-time move the market made, measured across 1,042 labeled events over the last three years with zero look-ahead.
UCTT’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | +0.08% | 54% | 1,036 |
| 30-min | 0.00% | 50% | 1,041 |
| 60-min | -0.14% | 46% | 1,041 |
| to close | +0.04% | 50% | 1,034 |
| Middle 50% of UCTT reactions | -0.72% to +0.82% |
|---|---|
| Median reaction (30-min) | 0.00% |
| Measured reactions | 1,042 |
Half of all Ultra Clean Holdings, Inc. news events land between -0.72% and +0.82% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How UCTT reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Rating reiterations | 47 | -0.36% | 45% | -0.20% |
| Price-target raises | 11 | -2.36% | 18% | -3.34% |
Last 3 years, pulled 2026-09-21. Reaction = percent move vs. the price at the news timestamp. Counts and medians only. The same measurement runs across every name in the dataset. 4 further classes were observed with fewer than 10 measured events and are not published. See how UCTT ranks against every other measured name →
That’s how UCTT usually reacts — get an email when it moves on news →Email me when UCTT moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to UCTT's baseline. Nothing else.
Recent UCTT events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Ultra Clean Announces Q3 2026 Earnings Date and Conference Call | Press release | PR Newswire | +1.45% | +2.83% | |
| Form 8-K Ultra Clean Holdings, For: Sep 28 | SEC filing · Form 8-K | SEC EDGAR | -0.76% | -3.66% | |
| Ultra Clean Appoints Alexander Davern to Board of Directors | Press release | PR Newswire | -0.76% | -3.66% | |
| Form 8-K Ultra Clean Holdings, For: Aug 14 | SEC filing · Form 8-K | SEC EDGAR | +0.83% | -2.01% | |
| Ultra Clean Announces Participation at Upcoming Investor Conferences | Press release | PR Newswire | -3.13% | — | |
| Form 8-K Ultra Clean Holdings, For: Aug 04 | SEC filing · Form 8-K | SEC EDGAR | +2.28% | +2.37% | |
| Form 10-Q Ultra Clean Holdings, For: Jun 26 | SEC filing · Form 10-Q | SEC EDGAR | +0.78% | -1.87% | |
| Form 8-K Ultra Clean Holdings, For: Aug 03 | SEC filing · Form 8-K | SEC EDGAR | -6.61% | -12.03% | |
| Ultra Clean Reports Second Quarter 2026 Financial Results | Press release | PR Newswire | -6.61% | -12.03% | |
| Form S-8 Ultra Clean Holdings, | SEC filing · Form S-8 | SEC EDGAR | +0.83% | -2.21% | |
| Form 8-K Ultra Clean Holdings, For: Jul 02 | SEC filing · Form 8-K | SEC EDGAR | -3.61% | -7.89% | |
| Ultra Clean Appoints Michael Keogh as Chief Financial Officer | Press release | PR Newswire | -3.61% | -7.89% | |
| Ultra Clean Announces Q2 2026 Earnings Date and Conference Call | Press release | PR Newswire | -2.46% | -6.41% | |
| Form 8-K Ultra Clean Holdings, For: May 22 | SEC filing · Form 8-K | SEC EDGAR | -1.03% | +0.52% | |
| Form SD Ultra Clean Holdings, | SEC filing · Form SD | SEC EDGAR | -1.03% | +0.52% | |
| Ultra Clean Announces Participation at Upcoming Investor Conferences | Press release | PR Newswire | -0.10% | -3.27% | |
| Form 10-Q/A Ultra Clean Holdings, For: Mar 27 | SEC filing · Form 10-Q | SEC EDGAR | -0.13% | -2.76% | |
| Form 10-Q Ultra Clean Holdings, For: Mar 27 | SEC filing · Form 10-Q | SEC EDGAR | -1.50% | +5.31% | |
| Ultra Clean Announces Retirement of the Chief Financial Officer Sheri Savage | Press release | PR Newswire | — | — | |
| Form 8-K Ultra Clean Holdings, For: Apr 28 | SEC filing · Form 8-K | SEC EDGAR | -9.22% | -10.30% | |
| Ultra Clean Reports First Quarter 2026 Financial Results | Press release | PR Newswire | -9.22% | -10.30% | |
| Form ARS Ultra Clean Holdings, For: Dec 26 | SEC filing · Form ARS | SEC EDGAR | -1.70% | -2.31% | |
| Form DEF 14A Ultra Clean Holdings, For: May 22 | SEC filing · Form DEF | SEC EDGAR | -1.70% | -2.31% | |
| Form 8-K Ultra Clean Holdings, For: Apr 23 | SEC filing · Form 8-K | SEC EDGAR | -1.70% | -2.31% | |
| Ultra Clean Announces Board Leadership Transition | Press release | PR Newswire | +0.40% | -0.31% | |
| Ultra Clean Announces Q1 2026 Earnings Date and Conference Call | Press release | PR Newswire | +0.24% | +0.06% | |
| Form 8-K Ultra Clean Holdings, For: Feb 26 | SEC filing · Form 8-K | SEC EDGAR | -1.22% | -4.13% | |
| Form 8-K Ultra Clean Holdings, For: Feb 26 | SEC filing · Form 8-K | SEC EDGAR | +0.65% | +5.99% | |
| Ultra Clean Prices Upsized $525.0 Million Convertible Senior Notes Offering | Press release | PR Newswire | +0.65% | +5.99% | |
| Form 8-K Ultra Clean Holdings, For: Feb 25 | SEC filing · Form 8-K | SEC EDGAR | +0.35% | -5.63% | |
| Ultra Clean Announces Proposed Convertible Senior Notes Offering | Press release | PR Newswire | +0.35% | -5.63% | |
| Form 10-K Ultra Clean Holdings, For: Dec 26 | SEC filing · Form 10-K | SEC EDGAR | +6.86% | +18.16% | |
| Form 8-K Ultra Clean Holdings, For: Feb 23 | SEC filing · Form 8-K | SEC EDGAR | +6.86% | +18.16% | |
| Ultra Clean Reports Fourth Quarter and Full Year 2025 Financial Results | Press release | PR Newswire | +6.86% | +18.16% | |
| Ultra Clean Announces Q4 2025 Earnings Date and Conference Call | Press release | PR Newswire | +3.29% | +7.05% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages Ultra Clean Holdings, Inc. (UCTT) Shareholders to Inquire about Securities Investigation | Press release | ACCESS Newswire | -0.26% | +2.64% | |
| Form 8-K Ultra Clean Holdings, For: Jan 25 | SEC filing · Form 8-K | SEC EDGAR | +0.30% | -2.05% | |
| Ultra Clean Appoints Robert Wunar as Chief Operating Officer | Press release | PR Newswire | +0.30% | -2.05% | |
| Bronstein, Gewirtz & Grossman, LLC Is Investigating Ultra Clean Holdings, Inc. (UCTT) And Encourages Shareholders to Connect | Press release | ACCESS Newswire | -0.26% | -1.32% | |
| Bronstein, Gewirtz & Grossman, LLC Initiates an Investigation into Allegations Against Ultra Clean Holdings, Inc. (UCTT) And Encourages Shareholders to Reach Out | Press release | ACCESS Newswire | -0.48% | +1.50% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages Ultra Clean Holdings, Inc. (UCTT) Stockholders to Inquire about Securities Investigation | Press release | ACCESS Newswire | +0.31% | -1.42% | |
| Ultra Clean Holdings, Inc. (UCTT) Investigation: Bronstein, Gewirtz & Grossman, LLC Encourages Shareholders to Contact the Firm to Learn More About the Investigation | Press release | ACCESS Newswire | +1.26% | +2.95% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages Ultra Clean Holdings, Inc. (UCTT) Stockholders to Inquire about Securities Investigation | Press release | ACCESS Newswire | -0.71% | +2.31% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages Ultra Clean Holdings, Inc. (UCTT) Investors to Inquire about Securities Investigation | Press release | ACCESS Newswire | -1.45% | +4.62% | |
| Bronstein, Gewirtz & Grossman, LLC Initiates an Investigation into Allegations Against Ultra Clean Holdings, Inc. (UCTT) And Encourages Stockholders to Reach Out | Press release | ACCESS Newswire | +0.13% | +3.49% | |
| Ultra Clean To Present At Needham Growth Conference | Press release | PR Newswire | -0.42% | -0.70% | |
| Bronstein, Gewirtz & Grossman, LLC Is Investigating Ultra Clean Holdings, Inc. (UCTT) And Encourages Stockholders to Connect | Press release | ACCESS Newswire | +3.58% | +5.25% | |
| Bronstein, Gewirtz & Grossman, LLC Encourages Ultra Clean Holdings, Inc. (UCTT) Shareholders to Inquire about Securities Investigation | Press release | ACCESS Newswire | -0.14% | -0.04% | |
| Bronstein, Gewirtz & Grossman, LLC Is Investigating Ultra Clean Holdings, Inc. (UCTT) And Encourages Shareholders to Connect | Press release | ACCESS Newswire | -0.12% | +0.92% | |
| Bronstein, Gewirtz & Grossman, LLC Initiates an Investigation into Allegations Against Ultra Clean Holdings, Inc. (UCTT) And Encourages Shareholders to Reach Out | Press release | ACCESS Newswire | -0.02% | -0.46% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the UCTT section they belong to.
Where else UCTT is measured.
UCTT earnings → · Analyst actions → · SEC filings →
Other Technology names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Paycom Software, Inc. (PAYC) | 1,048 | +0.03% | 53% |
| TESSCO Technologies Incorporated (TESS) | 1,047 | 0.00% | 46% |
| TIVO (TIVO) | 1,038 | 0.00% | 47% |
| Innodata Inc. (INOD) | 1,031 | -0.20% | 42% |
Same sector, same measurement: percent move vs. the price at the news timestamp, read at 30 minutes. Sample sizes differ, so the medians are comparable but the confidence behind them is not.
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Every name we’ve measured, in one place.
How the numbers are made.
How is Ultra Clean Holdings, Inc.'s median reaction calculated?
Every labeled UCTT news event is measured from its own timestamp: the last trade before the news is the base price, and the move is read at fixed horizons — 30 minutes of trading, then the close. The median across 1,042 events is what this page reports. Point-in-time, zero look-ahead: no event borrows information from a later one.
What counts as a positive reaction?
Any event whose price move is above zero at the horizon, relative to the last trade before the news timestamp. 50% of UCTT's measured events are up at 30 minutes; the rest close the window flat or negative.
How often is this page updated?
The news table refreshes automatically as new events are labeled and priced. The reaction medians are re-pulled in batches from the dataset — the figures here are as of 2026-09-21.
Does UCTT's past reaction predict its next one?
No. These are realized facts about past events, not forecasts. They describe a distribution — they say nothing certain about any future move.