CastleKnight Management’s Ultra Clean Holdings UCTT Stock Holding History

CastleKnight 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 Q1	$1.01M	Sell	16,200 -30,900	-66%	-$1.58M	0.02%	349
2025 Q4	$1.19M	Hold	47,100	–	–	0.03%	256
2025 Q3	$1.28M	Sell	47,100 -8,000	-15%	-$197K	0.03%	288
2025 Q2	$1.24M	Buy	55,100 +17,600	+47%	+$361K	0.04%	268
2025 Q1	$803K	Hold	37,500	–	–	0.03%	236
2024 Q4	$1.35M	Hold	37,500	–	–	0.04%	209
2024 Q3	$1.5M	Buy	37,500 +10,400	+38%	+$427K	0.06%	169
2024 Q2	$1.33M	Hold	27,100	–	–	0.07%	181
2024 Q1	$1.24M	Buy	27,100 +4,800	+22%	+$195K	0.07%	179
2023 Q4	$761K	Hold	22,300	–	–	0.04%	197
2023 Q3	$662K	Hold	22,300	–	–	0.04%	211
2023 Q2	$858K	Buy	22,300 +10,300	+86%	+$331K	0.09%	147
2023 Q1	$398K	Sell	12,000 -22,600	-65%	-$747K	0.04%	201
2022 Q4	$1.15M	Sell	34,600 -28,500	-45%	-$909K	0.15%	89
2022 Q3	$1.63M	Hold	63,100	–	–	0.23%	58
2022 Q2	$1.88M	Buy	63,100 +8,600	+16%	+$279K	0.31%	56
2022 Q1	$2.31M	Buy	54,500 +12,400	+29%	+$593K	0.33%	55
2021 Q4	$2.42M	Buy	+42,100	New	+$2.19M	0.5%	36

Other funds holding UCTT

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

FCM

Frontier Capital Management Boston, Massachusetts $9.73B AUM 55.65% 1-Year Est. Return

Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

Boston Partners Boston, Massachusetts $95.5B AUM 28.4% 1-Year Est. Return

D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

DCM

Driehaus Capital Management Chicago, Illinois $13.6B AUM 173.98% 1-Year Est. Return

CastleKnight Management's UCTT Position: Q1 2026 in Review

CastleKnight Management reduced its Ultra Clean Holdings (UCTT) stake by 66% in Q1 2026, selling an estimated $1.58M and leaving 16,200 shares worth $1.01M. The position accounts for 0.02% of the portfolio, ranked #349.

CastleKnight Management first reported a position in UCTT in Q4 2021 and has held it in 18 quarters since. The position peaked at $2.42M in Q4 2021. 331 funds tracked by Wall St. Rank hold UCTT as of Q1 2026.

CastleKnight Management held 16,200 shares of Ultra Clean Holdings worth $1.01M as of Q1 2026.
CastleKnight Management sold 30,900 Ultra Clean Holdings shares in Q1 2026, an estimated $1.58M.
Ultra Clean Holdings made up 0.02% of CastleKnight Management's portfolio in Q1 2026, its #349 holding.
CastleKnight Management first reported a position in Ultra Clean Holdings in Q4 2021 and has held it in 18 quarters since.
CastleKnight Management's Ultra Clean Holdings position peaked at $2.42M in Q4 2021.
331 funds tracked by Wall St. Rank held Ultra Clean Holdings as of Q1 2026.

Based on CastleKnight Management's 13F filing for Q1 2026, filed 15 May 2026.