Driehaus Capital Management’s Ultra Clean Holdings UCTT Stock Holding History

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$66.1M	Buy	1,062,376 +608,746	+134%	+$31.2M	0.49%	59
2025 Q4	$11.5M	Buy	453,630 +131,661	+41%	+$3.5M	0.08%	269
2025 Q3	$8.77M	Buy	+321,969	New	+$7.92M	0.06%	289
2022 Q2	–	Sell	-272,692	Closed	-$11.6M	–	440
2022 Q1	$11.6M	Sell	272,692 -953,751	-78%	-$45.6M	0.14%	205
2021 Q4	$70.3M	Buy	1,226,443 +697,774	+132%	+$36.3M	0.72%	36
2021 Q3	$22.5M	Sell	528,669 -786,451	-60%	-$37.1M	0.27%	120
2021 Q2	$70.6M	Buy	1,315,120 +28,136	+2%	+$1.51M	0.94%	13
2021 Q1	$74.7M	Buy	1,286,984 +420,737	+49%	+$19.4M	1.1%	13
2020 Q4	$27M	Sell	866,247 -267,394	-24%	-$7.46M	0.44%	71
2020 Q3	$24.3M	Buy	1,133,641 +280,150	+33%	+$6.8M	0.5%	55
2020 Q2	$19.3M	Buy	853,491 +433,901	+103%	+$8.25M	0.47%	61
2020 Q1	$5.79M	Sell	419,590 -440,013	-51%	-$9.34M	0.19%	129
2019 Q4	$20.2M	Buy	+859,603	New	+$17.4M	0.54%	49
2017 Q3	–	Sell	-50,526	Closed	-$947K	–	608
2017 Q2	$947K	Sell	50,526 -155,650	-75%	-$3.13M	0.03%	356
2017 Q1	$3.48M	Buy	206,176 +83,600	+68%	+$1.11M	0.12%	187
2016 Q4	$1.19M	Buy	+122,576	New	+$1.11M	0.04%	331