Boston Partners
UCTT

Boston Partners’s Ultra Clean Holdings UCTT Stock Holding History

Boston Partners’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 		$192M Sell
1,360,211
-108,667
-7% -$9.56M 0.17% 167
2026
Q1 		$91.4M Buy
+1,468,878
New +$75.3M 0.1% 219
2025
Q2 		– Sell
-1,021,032
Closed -$21.4M – 751
2025
Q1 		$21.4M Sell
1,021,032
-14,182
-1% -$453K 0.03% 316
2024
Q4 		$37.6M Buy
1,035,214
+718,717
+227% +$26.6M 0.05% 263
2024
Q3 		$12.4M Sell
316,497
-76,475
-19% -$3.14M 0.01% 382
2024
Q2 		$19.7M Sell
392,972
-42,215
-10% -$1.89M 0.02% 335
2024
Q1 		$19.6M Sell
435,187
-151,952
-26% -$6.17M 0.02% 327
2023
Q4 		$20.6M Sell
587,139
-1,154
-0.2% -$32.1K 0.03% 323
2023
Q3 		$16.8M Sell
588,293
-19,988
-3% -$674K 0.02% 328
2023
Q2 		$23.2M Sell
608,281
-18,476
-3% -$595K 0.03% 298
2023
Q1 		$20.1M Sell
626,757
-280,748
-31% -$9.28M 0.03% 311
2022
Q4 		$30.6M Buy
907,505
+81,324
+10% +$2.59M 0.04% 258
2022
Q3 		$22.1M Sell
826,181
-23,433
-3% -$717K 0.03% 284
2022
Q2 		$25.9M Buy
849,614
+40,168
+5% +$1.3M 0.04% 284
2022
Q1 		$33.7M Sell
809,446
-2,741
-0.3% -$131K 0.04% 274
2021
Q4 		$46.6M Sell
812,187
-9,657
-1% -$502K 0.06% 243
2021
Q3 		$35M Sell
821,844
-10,346
-1% -$488K 0.04% 287
2021
Q2 		$44.5M Sell
832,190
-7,774
-0.9% -$416K 0.06% 266
2021
Q1 		$48.4M Sell
839,964
-16,751
-2% -$771K 0.06% 256
2020
Q4 		$26.7M Sell
856,715
-49,034
-5% -$1.37M 0.04% 285
2020
Q3 		$19.4M Sell
905,749
-27,695
-3% -$672K 0.04% 293
2020
Q2 		$21.2M Buy
+933,444
New +$17.7M 0.04% 290

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
Geode Capital Management
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
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

Boston Partners's UCTT Position: Q2 2026 in Review

Boston Partners reduced its Ultra Clean Holdings (UCTT) stake by 7.4% in Q2 2026, selling an estimated $9.56M and leaving 1,360,211 shares worth $192M. The position accounts for 0.17% of the portfolio, ranked #167.

Boston Partners first reported a position in UCTT in Q2 2020 and has held it in 22 quarters since. 438 funds tracked by Wall St. Rank hold UCTT as of Q2 2026.

  • Boston Partners held 1,360,211 shares of Ultra Clean Holdings worth $192M as of Q2 2026.
  • Boston Partners sold 108,667 Ultra Clean Holdings shares in Q2 2026, an estimated $9.56M.
  • Ultra Clean Holdings made up 0.17% of Boston Partners's portfolio in Q2 2026, its #167 holding.
  • Boston Partners first reported a position in Ultra Clean Holdings in Q2 2020 and has held it in 22 quarters since.
  • 438 funds tracked by Wall St. Rank held Ultra Clean Holdings as of Q2 2026.

Based on Boston Partners's 13F filing for Q2 2026, filed 4 Aug 2026.