Robeco Institutional Asset Management
TTEK icon

Robeco Institutional Asset Management’s Tetra Tech TTEK Stock Holding History

Robeco Institutional Asset Management’s Portfolio TTEK Stock Details TTEK Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$21.5M Buy
743,831
+36,702
+5% +$1.08M 0.03% 354
2026
Q1 		$21.3M Sell
707,129
-32,775
-4% -$1.16M 0.03% 331
2025
Q4 		$24.8M Sell
739,904
-31,614
-4% -$1.07M 0.04% 320
2025
Q3 		$25.8M Buy
771,518
+121,020
+19% +$4.4M 0.04% 319
2025
Q2 		$23.4M Buy
650,498
+68,089
+12% +$2.27M 0.04% 328
2025
Q1 		$17M Buy
582,409
+2,125
+0.4% +$71.3K 0.03% 357
2024
Q4 		$23.1M Buy
580,284
+459,899
+382% +$20.6M 0.04% 308
2024
Q3 		$5.68M Sell
120,385
-25,115
-17% -$1.12M 0.01% 522
2024
Q2 		$5.95M Sell
145,500
-41,220
-22% -$1.68M 0.01% 506
2024
Q1 		$6.9M Buy
186,720
+3,150
+2% +$109K 0.02% 489
2023
Q4 		$6.13M Buy
183,570
+3,715
+2% +$119K 0.01% 522
2023
Q3 		$5.47M Buy
179,855
+20,745
+13% +$674K 0.01% 535
2023
Q2 		$5.21M Buy
159,110
+154,205
+3,144% +$4.54M 0.01% 544
2023
Q1 		$144K Buy
+4,905
New +$142K ﹤0.01% 961
2022
Q4 		– Sell
-5,755
Closed -$148K – 1042
2022
Q3 		$148K Buy
5,755
+5,510
+2,249% +$154K ﹤0.01% 855
2022
Q2 		$7K Buy
+245
New +$6.72K ﹤0.01% 918
2020
Q3 		– Sell
-2,215
Closed -$35K – 986
2020
Q2 		$35K Sell
2,215
-136,740
-98% -$2.08M ﹤0.01% 949
2020
Q1 		$1.96M Hold
138,955
– – 0.01% 680
2019
Q4 		$2.4M Sell
138,955
-6,465
-4% -$112K 0.01% 707
2019
Q3 		$2.52M Hold
145,420
– – 0.01% 686
2019
Q2 		$2.28M Hold
145,420
– – 0.01% 687
2019
Q1 		$1.73M Buy
145,420
+81,940
+129% +$919K 0.01% 725
2018
Q4 		$652K Buy
+63,480
New +$787K ﹤0.01% 782

Other funds holding TTEK

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Capital International Investors
Capital International Investors Los Angeles, California $484B AUM 34.9% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Fidelity International
Fidelity International Hamilton, Bermuda $139B AUM 29.06% 1-Year Est. Return
Amundi
Amundi Paris, France $416B AUM 44.19% 1-Year Est. Return
Fuller & Thaler Asset Management
Fuller & Thaler Asset Management San Mateo, California $36.7B AUM 74.15% 1-Year Est. Return

Robeco Institutional Asset Management's TTEK Position: Q2 2026 in Review

Robeco Institutional Asset Management increased its Tetra Tech (TTEK) stake by 5.2% in Q2 2026, buying an estimated $1.08M and bringing the position to 743,831 shares worth $21.5M. The position accounts for 0.03% of the portfolio, ranked #354.

Robeco Institutional Asset Management first reported a position in TTEK in Q4 2018 and has held it in 23 quarters since. The position peaked at $25.8M in Q3 2025. 552 funds tracked by Wall St. Rank hold TTEK as of Q2 2026.

  • Robeco Institutional Asset Management held 743,831 shares of Tetra Tech worth $21.5M as of Q2 2026.
  • Robeco Institutional Asset Management bought 36,702 Tetra Tech shares in Q2 2026, an estimated $1.08M.
  • Tetra Tech made up 0.03% of Robeco Institutional Asset Management's portfolio in Q2 2026, its #354 holding.
  • Robeco Institutional Asset Management first reported a position in Tetra Tech in Q4 2018 and has held it in 23 quarters since.
  • Robeco Institutional Asset Management's Tetra Tech position peaked at $25.8M in Q3 2025.
  • 552 funds tracked by Wall St. Rank held Tetra Tech as of Q2 2026.

Based on Robeco Institutional Asset Management's 13F filing for Q2 2026, filed 21 Jul 2026.