Simplex Trading
UCTT

Simplex Trading’s Ultra Clean Holdings UCTT Stock Holding History

Simplex Trading’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 		$31.1K Sell
500
-100
-17% -$5.13K ﹤0.01% 6351
2025
Q4 		$15.2K Buy
600
+300
+100% +$7.98K ﹤0.01% 6707
2025
Q3 		$8K Sell
300
-3,600
-92% -$88.5K ﹤0.01% 8062
2025
Q2 		$88K Sell
3,900
-200
-5% -$4.11K ﹤0.01% 5373
2025
Q1 		$87K Buy
4,100
+2,500
+156% +$79.8K ﹤0.01% 5199
2024
Q4 		$57K Buy
1,600
+1,300
+433% +$48.1K ﹤0.01% 5750
2024
Q3 		$11K Sell
300
-5,700
-95% -$234K ﹤0.01% 7153
2024
Q2 		$294K Buy
6,000
+2,700
+82% +$121K ﹤0.01% 4253
2024
Q1 		$151K Sell
3,300
-2,200
-40% -$89.4K ﹤0.01% 5150
2023
Q4 		$187K Buy
5,500
+4,600
+511% +$128K ﹤0.01% 4748
2023
Q3 		$26K Sell
900
-3,000
-77% -$101K ﹤0.01% 6398
2023
Q2 		$149K Sell
3,900
-12,200
-76% -$393K ﹤0.01% 4632
2023
Q1 		$533K Buy
16,100
+10,000
+164% +$331K ﹤0.01% 3201
2022
Q4 		$202K Buy
6,100
+2,900
+91% +$92.5K ﹤0.01% 4215
2022
Q3 		$82K Sell
3,200
-400
-11% -$12.2K ﹤0.01% 5795
2022
Q2 		$107K Sell
3,600
-6,200
-63% -$201K ﹤0.01% 5490
2022
Q1 		$415K Sell
9,800
-3,300
-25% -$158K ﹤0.01% 4084
2021
Q4 		$751K Sell
13,100
-2,100
-14% -$109K ﹤0.01% 3264
2021
Q3 		$801K Hold
15,200
– – ﹤0.01% 3396
2021
Q2 		$816K Buy
+15,200
New +$814K ﹤0.01% 3423
2021
Q1 		– Sell
-146
Closed -$454K – 10081
2020
Q4 		$454K Buy
146
+28
+24% +$781 ﹤0.01% 3553
2020
Q3 		$253K Buy
118
+18
+18% +$437 ﹤0.01% 3814
2020
Q2 		$226K Sell
100
-1
-1% -$19 ﹤0.01% 3856
2020
Q1 		$139K Buy
101
+15
+17% +$319 ﹤0.01% 4018
2019
Q4 		$201K Sell
86
-65
-43% -$1.31K ﹤0.01% 3750
2019
Q3 		$220K Buy
151
+73
+94% +$1.01K ﹤0.01% 3462
2019
Q2 		$108K Sell
78
-234
-75% -$2.98K ﹤0.01% 4102
2019
Q1 		$322K Buy
312
+122
+64% +$1.31K ﹤0.01% 3118
2018
Q4 		$160K Buy
190
+8
+4% +$78 ﹤0.01% 3384
2018
Q3 		$228K Sell
182
-92
-34% -$1.34K ﹤0.01% 3509
2018
Q2 		$454K Buy
274
+142
+108% +$2.49K ﹤0.01% 2552
2018
Q1 		$18K Sell
132
-343
-72% -$7.23K ﹤0.01% 3476
2017
Q4 		$18K Buy
475
+413
+666% +$10.6K ﹤0.01% 3403
2017
Q3 		$38K Sell
62
-26
-30% -$615 ﹤0.01% 2560
2017
Q2 		$3K Buy
88
+10
+13% +$201 ﹤0.01% 5050
2017
Q1 		$16K Buy
78
+34
+77% +$451 ﹤0.01% 3508
2016
Q4 		$2K Buy
+44
New +$400 ﹤0.01% 5140

Other funds holding UCTT

BlackRock
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
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
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $95.5B AUM 28.4% 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 $1.61T AUM 30.72% 1-Year Est. Return
DCM
Driehaus Capital Management Chicago, Illinois $13.6B AUM 173.98% 1-Year Est. Return

Simplex Trading's UCTT Position: Q1 2026 in Review

Simplex Trading increased its Ultra Clean Holdings (UCTT) stake by 7,794% in Q1 2026, buying an estimated $264K and bringing the position to 5,210 shares worth $324K. The position accounts for ﹤0.01% of the portfolio, ranked #3741.

Simplex Trading first reported a position in UCTT in Q4 2016 and has held it in 26 quarters since. The position peaked at $782K in Q1 2017. 331 funds tracked by Wall St. Rank hold UCTT as of Q1 2026.

  • Simplex Trading held 5,210 shares of Ultra Clean Holdings worth $324K as of Q1 2026.
  • Simplex Trading bought 5,144 Ultra Clean Holdings shares in Q1 2026, an estimated $264K.
  • Ultra Clean Holdings made up ﹤0.01% of Simplex Trading's portfolio in Q1 2026, its #3741 holding.
  • Simplex Trading first reported a position in Ultra Clean Holdings in Q4 2016 and has held it in 26 quarters since.
  • Simplex Trading's Ultra Clean Holdings position peaked at $782K in Q1 2017.
  • 331 funds tracked by Wall St. Rank held Ultra Clean Holdings as of Q1 2026.

Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.