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NASDAQ · UCTTTechnologySemiconductors

Ultra Clean Holdings, Inc. (UCTT)

$44.04−8.29%
Close Nov 4, 2026 · split-adjusted
Nov 4, 2026$44.04▲ 68.74% in range
Nov 4, 2025Low $21.65 · High $142.59Nov 4, 2026
What changed · written from our data
As of Nov 4, 2026

Ultra Clean Holdings closed at $44.04 on Nov 4, down 8.29%, 69.1% below its 52-week closing high. Volume of 1.6M shares was 0.98× its 20-day average (close to normal).

Split-adjusted performance: -39.9% over one month, -47.2% over six months, +54.4% over one year.

In the quarter ended Sep 25, 2026, revenue was $759M, up 48.8% from a year earlier, with a net margin of 5.2%.

Short interest was 3.3M shares at the Oct 15 settlement, down 12.4% from the prior report (7.4% of float, 2.2 days to cover).

Market cap$2.11B48.0M shares
Revenue · quarter$759.0M+48.8% YoY
Diluted EPS$0.85—
P/E · TTM79.4×P/S 0.9×
Net margin5.2%Gross 16.9%
Dividend yieldNone
52-week range21.65 – 142.59−69.1% from high
Volume1.6M0.98× 20-day avg
Volatility · 60d82.8%Annualised
Short % of float7.4%2.2 days to cover
Net cash-$364.2MCash $270.9M
Next earnings—Not scheduled
Split-adjusted performance
1W −21.2%1M −39.9%3M −47.0%6M −47.2%YTD +73.9%1Y +54.4%3Y +84.1%5Y +2.8%

Earnings reactions

History →

No reported quarters with price history yet.

Rank within Semiconductors

Percentile among 83 companies (100 = best)

6-month momentum27
Revenue growth73
Net margin42
Value (low P/E)27
Size41

Industry medians: 6-month return −31.2%, revenue growth +24.6%, net margin 8.1%, P/E 46.8×.

Short interest

Details →
Shares short3.3M−12.4% vs prior
Days to cover2.2Settled Oct 15
% of float7.4%
Short vol. 10d43.7%of daily volume

Closest peers by size in Semiconductors

CompanyPriceToday6MRev. growthNet marginP/EMkt cap
UCTTUltra Clean Holdings$44.04−8.29%−47.2%+48.8%5.2%79.4$2.11B
LASRnLIGHT$32.99−9.64%−53.7%+33.8%−1.6%—$1.90BCompare
SEDGSolarEdge Technologies$30.02−8.70%−26.1%+19.6%−8.9%—$1.85BCompare
NVTSNavitas Semiconductor$9.33+9.00%−44.1%−27.3%−2167.5%—$2.45BCompare
PENGPenguin Solutions$48.35−9.10%+24.0%+67.7%14.3%16.4$2.48BCompare
POWIPower Integrations$46.80−0.40%−40.2%+2.7%8.3%104.3$2.61BCompare
AMBAAmbarella$60.92−1.74%−19.3%+13.2%−6.2%—$2.69BCompare
PLABPhotronics$27.38−2.21%−47.4%+2.7%13.4%9.8$1.62BCompare
SHLSShoals Technologies Group$9.16+8.15%+10.0%+47.4%7.4%48.4$1.54BCompare

News about Ultra Clean Holdings

All news →
Ultra Clean (UCTT) Upgraded to Buy: What Does It Mean for the Stock?Zacks Investment Research · 2d ago▲ PositiveWhat UCTT's Q3 Beat and Strong Q4 Guidance Mean for Investors NowZacks Investment Research · 2d ago▲ PositiveIs UCTT Worth Buying as Growth Accelerates but Cash Flow Weakens?Zacks Investment Research · 2d agoNeutralUCTT Fell 31.6% in the Past Month: Is the Sell-Off an Opportunity?Zacks Investment Research · 2d agoNeutralWhy Ultra Clean Holdings Rallied TodayThe Motley Fool · Oct 28, 2026▲ Positive

Quick answers

What does Ultra Clean Holdings do?
Ultra Clean Holdings Inc, through its subsidiaries, manufactures and supplies production tools, modules, and subsystems for the semiconductor capital equipment industry. The product includes precision robotic solutions, gas delivery systems, and a variety of industrial and automation production equipment products; subsystems include wafer cleaning subsystems, chemical delivery modules, top-plate assemblies, frame assemblies, and process modules.
What is UCTT's market cap?
$2.11B, based on the Nov 4 close of $44.04.
What is UCTT's P/E ratio?
79.4× trailing-twelve-month earnings of $26.60M.
Does Ultra Clean Holdings pay a dividend?
No regular cash dividend has been paid in the last year.
How much of UCTT is sold short?
3.3M shares, 7.4% of float, as of Oct 15, 2026.
What sector is UCTT in?
Technology, in the Semiconductors industry.

About Ultra Clean Holdings

Ultra Clean Holdings Inc, through its subsidiaries, manufactures and supplies production tools, modules, and subsystems for the semiconductor capital equipment industry. The product includes precision robotic solutions, gas delivery systems, and a variety of industrial and automation production equipment products; subsystems include wafer cleaning subsystems, chemical delivery modules, top-plate assemblies, frame assemblies, and process modules. Its customer base includes firms in the semiconductor capital equipment industry, medical, energy, industrial, flat panel, and research equipment industries. It has two segments: Products and Services. Its principal markets are the Americas, Asia Pacific, and EMEA.

HQ: Hayward, CA7,411 employeesListed Mar 25, 2004uct.com

Sources: Massive / Polygon daily aggregates (split-adjusted) · SEC filings via Massive · FINRA settlements via Massive · Financial Modeling Prep. Figures are dated where shown; research is informational, not investment advice. Methodology