Driehaus Capital Management LLC

CIK

938206

City

Chicago

State / Country

IL

Stock

UCTT — Ultra Clean Holdings, Inc.

Top Portfolio Positions

350 positions · $13,780,494,588 total · as of Mar 31, 2026

Ticker	Company	Shares	Value (USD)	% of Portfolio	Open
CRNX	Crinetics Pharmaceuticals, Inc. Healthcare	12,791,844	$464,599,774	3.37%
TSM	Taiwan Semiconductor Manufacturing Co Ltd Technology	1,264,890	$427,469,575	3.10%
PRAX	Praxis Precision Medicines, Inc. Healthcare	949,225	$305,830,802	2.22%
XENE	Xenon Pharmaceuticals Inc. Healthcare	4,491,653	$261,189,621	1.90%
PL	Planet Labs PBC Industrials	7,918,693	$221,327,469	1.61%
FN	Fabrinet Technology	391,081	$203,956,563	1.48%
APGE	Apogee Therapeutics, Inc. Healthcare	1,920,800	$161,673,736	1.17%
LITE	Lumentum Holdings Inc. Technology	228,995	$160,928,526	1.17%
CW	Curtiss Wright Corp Industrials	225,759	$153,768,970	1.12%
BAP	Credicorp Ltd Financial Services	450,730	$152,878,601	1.11%

Portfolio Trend

25 quarters · across all stocks

Holdings in UCTT

Compact Export CSV

Shares Held

Position Value (USD)

12 quarters on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$66,058,539	1,062,376	+134.2%	Shares	Sole	2026-05-15
2025-12-31	$11,490,447	453,630	+40.9%	Shares	Sole	2026-02-17
2025-09-30	$8,773,655	321,969	+18.1%	Shares	Sole	2025-11-14
2022-03-31	$11,559,413	272,692	-77.8%	Shares	Sole	2022-05-16
2021-12-31	$70,348,770	1,226,443	+132.0%	Shares	Sole	2022-02-14
2021-09-30	$22,521,299	528,669	-59.8%	Shares	Sole	2021-11-15
2021-06-30	$70,648,246	1,315,120	+2.2%	Shares	Sole	2021-08-16
2021-03-31	$74,696,551	1,286,984	+48.6%	Shares	Sole	2021-05-17
2020-12-31	$26,983,594	866,247	-23.6%	Shares	Sole	2021-02-16
2020-09-30	$24,327,935	1,133,641	+32.8%	Shares	Sole	2020-11-16
2020-06-30	$19,314,501	853,491	+103.4%	Shares	Sole	2020-08-14
2020-03-31	$5,790,342	419,590	—	Shares	Sole	2020-05-15
No 13F history on record for this holder in this stock.