Ultra Clean Holdings, Inc. rose 11.6% on Monday, November 9, 2026, on 1,197,700 shares. No headline about UCTT came out that day or the day before in the news feeds we follow, so the move may come from news we don't track, the sector or trading alone.
Ultra Clean Holdings, Inc. (UCTT:NASDAQ) closed at $46.35 on November 13, 2026, down 3.64% on the day. The stock trades 67.9% below its 52-week high of $144.22 and 115.7% above its 52-week low of $21.49. Over the past year, it gained 93.9%. Ultra Clean Holdings, Inc. is part of the Technology sector (Semiconductors).
In 252 trading sessions since November 13, 2025, UCTT closed higher on 136 days (54%). Its best day was July 30, 2026 (+19.63%) and its worst was July 2, 2026 (-17.83%). The stock moved 10% or more in a single session 21 times. It opened at least 5% above the previous day's high 8 times.
Ultra Clean Holdings, Inc. designs, develops, prototypes, engineers, manufactures, and tests production tools, modules, and subsystems for the semiconductor capital equipment and equipment industry segments primarily in North America, Asia, and Europe. It offers precision robotic systems that are used when accurate controlled motion is required; gas delivery systems, which include one or more gas lines consisting of small diameter internally polished stainless steel tubing products, filters, mass flow controllers, regulators, pressure transducers and valves, component heaters, and an integrated electronic and/or pneumatic control system; and various industrial and automation production equipment products. The company also provides subsystems, such as wafer cleaning sub-systems; chemical delivery modules that deliver gases and reactive chemicals in a liquid or gaseous form from a centralized subsystem to the reaction chamber; frame assemblies, which are support structures fabricated from steel tubing or folded sheet metal; and top-plate assemblies. In addition, it offers liquid delivery systems; process modules, which are the subsystems of semiconductor manufacturing tools that proc...
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