Robeco Institutional Asset Management B.V.
Position in TTEK — Tetra Tech Inc
CIK 1418773
ROTTERDAM, P7
Position in TTEK
as of Jun 30, 2026
· filed Jul 21, 2026
Position Value
$21,489,277
+$190,552 QoQ
Shares Held
743,831
+5.2% QoQ
Ownership
0.291%
of shares outstanding
% of Portfolio
0.03%
of 13F equity value
Holder Rank
#62
of 543 holders
Holding Since
Mar 2023
13 quarters on record
Voting authority
Sole 76%
Shared 0%
None 24%
Common Shares in TTEK Over Time
Shares Held
Position Value (USD)
Position in Engineering & Construction
Industrials · as of Jun 30, 2026Robeco Institutional Asset Management B.V. holds $229,434,720 across 8 Engineering & Construction names. TTEK ranks #4 (9.4% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | FIX |
Comfort Systems USA Inc
|
36,417 | $72,176,673 | |
| 2 | PWR |
Quanta Services, Inc.
|
71,503 | $51,485,020 | |
| 3 | EME |
EMCOR Group, Inc.
|
52,256 | $43,366,209 | |
| 4 | TTEK |
Tetra Tech Inc
This page
|
743,831 | $21,489,277 | |
| 5 | ACM |
Aecom
|
303,028 | $21,151,354 | |
| 6 | J |
Jacobs Solutions Inc.
|
108,628 | $13,687,128 | |
| 7 | AGX |
Argan Inc
|
7,278 | $5,811,846 | |
| 8 | MYRG |
Myr Group Inc.
|
534 | $267,213 |
All Filings in TTEK
Export CSV
13 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $21,489,277 | 743,831 | Shares | Defined | 2026-07-21 | |
| 2026-03-31 | $21,298,725 | 707,129 | Shares | Defined | 2026-04-21 | |
| 2025-12-31 | $24,816,380 | 739,904 | Shares | Defined | 2026-01-23 | |
| 2025-09-30 | $25,753,270 | 771,518 | Shares | Defined | 2025-10-22 | |
| 2025-06-30 | $23,391,908 | 650,498 | Shares | Defined | 2025-07-18 | |
| 2025-03-31 | $17,035,463 | 582,409 | Shares | Defined | 2025-04-23 | |
| 2024-12-31 | $23,118,514 | 580,284 | Shares | Defined | 2025-01-23 | |
| 2024-09-30 | $5,677,356 | 120,385 | Shares | Defined | 2024-10-29 | |
| 2024-06-30 | $5,950,368 | 29,100 | Shares | Defined | 2024-07-23 | |
| 2024-03-31 | $6,897,810 | 37,344 | Shares | Defined | 2024-04-24 | |
| 2023-09-30 | $5,468,671 | 35,971 | Shares | Defined | 2023-10-24 | |
| 2023-06-30 | $5,210,534 | 31,822 | Shares | Defined | 2023-07-24 | |
| 2023-03-31 | $144,118 | 981 | Shares | Defined | 2023-05-04 | |
| No filing history on record for this holder in this stock. | ||||||