Ultra Clean Holdings, Inc.

# Signal Note: Driehaus Growth Initiation in UCTT Driehaus Capital's $11.5M entry into Ultra Clean Holdings (UCTT) signals conviction in semiconductor/cleanroom equipment demand, likely tied to anticipated capacity expansions from contract manufacturers serving biotech (CDMO buildout) and pharma manufacturing. The position timing aligns with industry tailwinds in single-use systems and contamination control—critical infrastructure for scaled biologics production—though this represents equipment/infrastructure exposure rather than direct drug or indication leverage. Monitor for guidance updates on customer capex cycles and semiconductor equipment orders as key catalysts validating the thesis.