DCM
UCTT

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

Driehaus Capital 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 		$187M Buy
1,309,202
+246,826
+23% +$21.7M 1.08% 14
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 – 606
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

Other funds holding UCTT

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Capital World Investors
Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Charles Schwab
Charles Schwab San Francisco, California $751B AUM 38.74% 1-Year Est. Return

Driehaus Capital Management's UCTT Position: Q2 2026 in Review

Driehaus Capital Management increased its Ultra Clean Holdings (UCTT) stake by 23% in Q2 2026, buying an estimated $21.7M and bringing the position to 1,309,202 shares worth $187M. The position accounts for 1.08% of the portfolio, ranked #14.

Driehaus Capital Management first reported a position in UCTT in Q4 2016 and has held it in 17 quarters since. 438 funds tracked by Wall St. Rank hold UCTT as of Q2 2026.

  • Driehaus Capital Management held 1,309,202 shares of Ultra Clean Holdings worth $187M as of Q2 2026.
  • Driehaus Capital Management bought 246,826 Ultra Clean Holdings shares in Q2 2026, an estimated $21.7M.
  • Ultra Clean Holdings made up 1.08% of Driehaus Capital Management's portfolio in Q2 2026, its #14 holding.
  • Driehaus Capital Management first reported a position in Ultra Clean Holdings in Q4 2016 and has held it in 17 quarters since.
  • 438 funds tracked by Wall St. Rank held Ultra Clean Holdings as of Q2 2026.

Based on Driehaus Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.