Ken Griffin
UCTT

Ken Griffin’s Ultra Clean Holdings UCTT Stock Holding History

Ken Griffin’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 		$8.66M Buy
139,223
+107,904
+345% +$5.53M ﹤0.01% 3455
2025
Q4 		$793K Sell
31,319
-90,067
-74% -$2.4M ﹤0.01% 7938
2025
Q3 		$3.31M Buy
121,386
+40,150
+49% +$987K ﹤0.01% 5129
2025
Q2 		$1.83M Buy
81,236
+42,550
+110% +$873K ﹤0.01% 5864
2025
Q1 		$828K Buy
38,686
+26,387
+215% +$843K ﹤0.01% 7368
2024
Q4 		$442K Sell
12,299
-4,105
-25% -$152K ﹤0.01% 8829
2024
Q3 		$655K Sell
16,404
-23,025
-58% -$944K ﹤0.01% 7689
2024
Q2 		$1.93M Buy
39,429
+5,609
+17% +$252K ﹤0.01% 5385
2024
Q1 		$1.55M Sell
33,820
-18,141
-35% -$737K ﹤0.01% 6026
2023
Q4 		$1.77M Sell
51,961
-87,317
-63% -$2.43M ﹤0.01% 5586
2023
Q3 		$4.13M Buy
139,278
+28,708
+26% +$968K ﹤0.01% 3967
2023
Q2 		$4.25M Sell
110,570
-36,059
-25% -$1.16M ﹤0.01% 3901
2023
Q1 		$4.86M Buy
146,629
+25,208
+21% +$834K ﹤0.01% 3862
2022
Q4 		$4.03M Sell
121,421
-86,227
-42% -$2.75M ﹤0.01% 4236
2022
Q3 		$5.35M Buy
207,648
+29,095
+16% +$891K ﹤0.01% 3753
2022
Q2 		$5.32M Buy
178,553
+45,917
+35% +$1.49M ﹤0.01% 3687
2022
Q1 		$5.62M Buy
132,636
+105,398
+387% +$5.04M ﹤0.01% 3947
2021
Q4 		$1.56M Sell
27,238
-198,649
-88% -$10.3M ﹤0.01% 6798
2021
Q3 		$9.62M Buy
225,887
+113,509
+101% +$5.35M ﹤0.01% 3153
2021
Q2 		$6.04M Buy
112,378
+26,147
+30% +$1.4M ﹤0.01% 4053
2021
Q1 		$5M Sell
86,231
-53,143
-38% -$2.45M ﹤0.01% 4255
2020
Q4 		$4.34M Buy
139,374
+126,529
+985% +$3.53M ﹤0.01% 3918
2020
Q3 		$276K Sell
12,845
-57,852
-82% -$1.4M ﹤0.01% 8269
2020
Q2 		$1.6M Sell
70,697
-156,899
-69% -$2.98M ﹤0.01% 4961
2020
Q1 		$3.14M Buy
+227,596
New +$4.83M ﹤0.01% 3387
2019
Q4 		– Sell
-107,748
Closed -$2.18M – 9795
2019
Q3 		$1.58M Buy
107,748
+9,491
+10% +$132K ﹤0.01% 4853
2019
Q2 		$1.37M Sell
98,257
-114,037
-54% -$1.45M ﹤0.01% 5174
2019
Q1 		$2.2M Buy
+212,294
New +$2.28M ﹤0.01% 4306
2018
Q4 		– Sell
-17,509
Closed -$171K – 9784
2018
Q3 		$220K Sell
17,509
-124,871
-88% -$1.82M ﹤0.01% 8067
2018
Q2 		$2.36M Sell
142,380
-82,600
-37% -$1.45M ﹤0.01% 3847
2018
Q1 		$4.33M Buy
224,980
+44,017
+24% +$928K ﹤0.01% 2623
2017
Q4 		$4.18M Sell
180,963
-4,969
-3% -$127K ﹤0.01% 2697
2017
Q3 		$5.69M Buy
185,932
+7,061
+4% +$167K ﹤0.01% 2172
2017
Q2 		$3.35M Buy
178,871
+75,583
+73% +$1.52M ﹤0.01% 2545
2017
Q1 		$1.74M Buy
103,288
+17,809
+21% +$236K ﹤0.01% 3225
2016
Q4 		$829K Buy
+85,479
New +$776K ﹤0.01% 4121
2016
Q3 		– Sell
-18,092
Closed -$103K – 7794
2016
Q2 		$103K Buy
+18,092
New +$99.8K ﹤0.01% 6183
2015
Q4 		– Sell
-251,424
Closed -$1.44M – 9222
2015
Q3 		$1.44M Buy
+251,424
New +$1.66M ﹤0.01% 3341
2015
Q1 		– Sell
-17,790
Closed -$165K – 8862
2014
Q4 		$165K Sell
17,790
-61,795
-78% -$523K ﹤0.01% 6188
2014
Q3 		$712K Sell
79,585
-96,445
-55% -$899K ﹤0.01% 4151
2014
Q2 		$1.59M Buy
176,030
+67,198
+62% +$642K ﹤0.01% 2962
2014
Q1 		$1.43M Buy
108,832
+87,634
+413% +$1.09M ﹤0.01% 2977
2013
Q4 		$213K Buy
+21,198
New +$191K ﹤0.01% 4965

Other funds holding UCTT

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
FCM
Frontier Capital Management Boston, Massachusetts $9.73B AUM 55.65% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
DCM
Driehaus Capital Management Chicago, Illinois $13.6B AUM 173.98% 1-Year Est. Return

Ken Griffin's UCTT Position: Q1 2026 in Review

Ken Griffin increased its Ultra Clean Holdings (UCTT) stake by 345% in Q1 2026, buying an estimated $5.53M and bringing the position to 139,223 shares worth $8.66M. The position accounts for ﹤0.01% of the portfolio, ranked #3455.

Ken Griffin first reported a position in UCTT in Q4 2013 and has held it in 43 quarters since. The position peaked at $9.62M in Q3 2021. 331 funds tracked by Wall St. Rank hold UCTT as of Q1 2026.

  • Ken Griffin held 139,223 shares of Ultra Clean Holdings worth $8.66M as of Q1 2026.
  • Ken Griffin bought 107,904 Ultra Clean Holdings shares in Q1 2026, an estimated $5.53M.
  • Ultra Clean Holdings made up ﹤0.01% of Ken Griffin's portfolio in Q1 2026, its #3455 holding.
  • Ken Griffin first reported a position in Ultra Clean Holdings in Q4 2013 and has held it in 43 quarters since.
  • Ken Griffin's Ultra Clean Holdings position peaked at $9.62M in Q3 2021.
  • 331 funds tracked by Wall St. Rank held Ultra Clean Holdings as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.