O'Shaughnessy Asset Management’s Ultra Clean Holdings UCTT Stock Holding History

O'Shaughnessy Asset Management’s Portfolio UCTT Stock Details UCTT Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$289K	Buy	+2,027	New	+$178K	﹤0.01%	1859
2021 Q4	–	Sell	-3,393	Closed	-$145K	–	2413
2021 Q3	$145K	Sell	3,393 -259	-7%	-$12.2K	﹤0.01%	1192
2021 Q2	$196K	Sell	3,652 -621	-15%	-$33.2K	﹤0.01%	1040
2021 Q1	$248K	Buy	4,273 +2,978	+230%	+$137K	0.01%	841
2020 Q4	$40K	Buy	1,295 +332	+34%	+$9.26K	﹤0.01%	1297
2020 Q3	$21K	Hold	963	–	–	﹤0.01%	1242
2020 Q2	$22K	Buy	+963	New	+$18.3K	﹤0.01%	1132
2020 Q1	–	Sell	-2,328	Closed	-$55K	–	1807
2019 Q4	$55K	Buy	+2,328	New	+$47.1K	﹤0.01%	942
2015 Q2	–	Sell	-78	Closed	-$1K	–	1087
2015 Q1	$1K	Sell	78 -95,145	-100%	-$837K	﹤0.01%	980
2014 Q4	$880K	Sell	95,223 -93,754	-50%	-$794K	0.02%	333
2014 Q3	$1.69M	Sell	188,977 -36,724	-16%	-$342K	0.03%	271
2014 Q2	$2.04M	Sell	225,701 -77,724	-26%	-$743K	0.04%	257
2014 Q1	$3.98M	Buy	303,425 +234,524	+340%	+$2.93M	0.08%	179
2013 Q4	$689K	Buy	+68,901	New	+$620K	0.01%	380

Other funds holding UCTT

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

DCM

Driehaus Capital Management Chicago, Illinois $17.3B AUM 211.34% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

O'Shaughnessy Asset Management's UCTT Position: Q2 2026 in Review

O'Shaughnessy Asset Management opened a new position in Ultra Clean Holdings (UCTT) in Q2 2026: 2,027 shares worth $289K. The stake represents ﹤0.01% of the portfolio and ranks #1859 among its holdings. This is a return to the name: O'Shaughnessy Asset Management previously reported a position in UCTT as recently as Q3 2021.

O'Shaughnessy Asset Management first reported a position in UCTT in Q4 2013 and has held it in 14 quarters since. The position peaked at $3.98M in Q1 2014. 438 funds tracked by Wall St. Rank hold UCTT as of Q2 2026.

O'Shaughnessy Asset Management held 2,027 shares of Ultra Clean Holdings worth $289K as of Q2 2026.
Ultra Clean Holdings was a new O'Shaughnessy Asset Management position in Q2 2026.
Ultra Clean Holdings made up ﹤0.01% of O'Shaughnessy Asset Management's portfolio in Q2 2026, its #1859 holding.
O'Shaughnessy Asset Management first reported a position in Ultra Clean Holdings in Q4 2013 and has held it in 14 quarters since.
O'Shaughnessy Asset Management's Ultra Clean Holdings position peaked at $3.98M in Q1 2014.
438 funds tracked by Wall St. Rank held Ultra Clean Holdings as of Q2 2026.

Based on O'Shaughnessy Asset Management's 13F filing for Q2 2026, filed 13 Aug 2026.