Tetra Tech Inc
TTEK- Exchange
- Nasdaq
- Industry
- Services-Engineering Services
- SEC CIK
- 0000831641
No open-market purchases or sales by Tetra Tech Inc insiders were filed in the last 90 days; 584 institutions reported holding it in 13F filings for Q2 2026, worth $7.95B in total; no superinvestor holds it.
13F holders, Q2 2026
Institutional positions in Tetra Tech Inc as of Jun 30, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 584
- −31 vs. Q1 2026
- Shares held
- 329.8M
- +10.3M (+3.2%) vs. Q1 2026
- Total value
- $7.95B
- −$83.8M (−1.0%) vs. Q1 2026
- New holders
- 57
- 209 more added
- Sold out
- 88
- 217 more reduced
6 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q1 2026: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting TTEK on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 584 | $7.95B |
| Q1 2026 | 621 | $8.07B |
| Q4 2025 | 641 | $8.82B |
| Q3 2025 | 625 | $8.91B |
| Q2 2025 | 617 | $9.56B |
| Q1 2025 | 600 | $7.72B |
| Q4 2024 | 661 | $10.0B |
| Q3 2024 | 670 | $12.1B |
| Q2 2024 | 600 | $9.99B |
| Q1 2024 | 512 | $8.95B |
| Q4 2023 | 510 | $8.07B |
| Q3 2023 | 471 | $7.15B |
| Q2 2023 | 455 | $7.72B |
| Q1 2023 | 445 | $6.88B |
| Q4 2022 | 470 | $6.79B |
| Q3 2022 | 413 | $5.92B |
| Q2 2022 | 415 | $6.31B |
| Q1 2022 | 404 | $7.92B |
| Q4 2021 | 401 | $7.95B |
| Q3 2021 | 359 | $7.09B |
| Q2 2021 | 366 | $5.69B |
| Q1 2021 | 365 | $6.45B |
Institutions, Q2 2026
Shares, value and share of portfolio for each institution holding Tetra Tech Inc; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 28,675,276 | $840.7M | 0.01% | +1,884,870+7.0% | Added |
| Vanguard Portfolio Management LLC | 12,467,970 | $360.2M | 0.02% | −175,124−1.4% | Reduced |
| Vanguard Capital Management LLC | 11,725,738 | $338.8M | 0.01% | +16,587+0.1% | Added |
| Capital International Investors | 11,651,238 | $336.6M | 0.07% | +265,971+2.3% | Added |
| State Street Corp | 9,761,640 | $297.9M | 0.01% | +125,728+1.3% | Added |
| FMR LLC | 8,768,611 | $264.4M | 0.01% | +8,440,359+2,571.3% | Added |
| Geode Capital Management, LLC | 6,833,071 | $197.4M | 0.01% | +1,615,623+31.0% | Added |
| FIL Ltd | 5,471,691 | $158.1M | 0.11% | +639,019+13.2% | Added |
| Amundi | 5,098,519 | $147.3M | 0.04% | +349,272+7.4% | Added |
| Fuller & Thaler Asset Management, Inc. | 4,921,268 | $142.2M | 0.39% | +1,606,825+48.5% | Added |
| Pictet Asset Management Holding SA | 4,759,290 | $137.5M | 0.13% | −4,885,502−50.7% | Reduced |
| Wellington Management Group LLP | 4,674,089 | $137.5M | 0.02% | −129,960−2.7% | Reduced |
| Dimensional Fund Advisors LP | 4,446,215 | $128.5M | 0.02% | +656,975+17.3% | Added |
| Neuberger Berman Group LLC | 4,408,987 | $127.4M | 0.08% | −2,860,670−39.4% | Reduced |
| Arrowstreet Capital, Limited Partnership | 4,393,728 | $126.9M | 0.06% | +3,850,262+708.5% | Added |
| Invesco Ltd. | 4,116,893 | $120.0M | 0.01% | +1,181,993+40.3% | Added |
| AQR Capital Management LLC | 4,111,603 | $117.1M | 0.04% | +2,597,141+171.5% | Added |
| Impax Asset Management Group plc | 3,931,741 | $113.6M | 0.74% | +101,667+2.7% | Added |
| LGT Group Foundation | 3,745,171 | $108.2M | 1.22% | +583,463+18.5% | Added |
| Norges Bank | 3,230,988 | $93.3M | 0.01% | +3,230,988 | New |
| Robeco Schweiz AG | 3,099,250 | $89.5M | 1.44% | +812,000+35.5% | Added |
| M&G Plc | 2,776,344 | $80.5M | 0.40% | +457,810+19.7% | Added |
| Ameriprise Financial Inc | 2,729,762 | $78.9M | 0.02% | +708,837+35.1% | Added |
| Point72 Asset Management, L.P. | 1,011,149 | $77.7M | 0.12% | +468,882+86.5% | Added |
| Goldman Sachs Group Inc | 2,647,910 | $76.5M | 0.01% | +721,242+37.4% | Added |
| First Trust Advisors LP | 2,561,572 | $74.0M | 0.04% | +116,090+4.7% | Added |
| Weiss Asset Management LP | 1,071 | $72.2M | 0.81% | −158,327−99.3% | Reduced |
| Van Berkom & Associates Inc. | 2,469,392 | $71.3M | 2.30% | −2,102,184−46.0% | Reduced |
| Energy Income Partners, LLC | 2,371,465 | $68.5M | 1.08% | +2,371,465 | New |
| Ninety One UK Ltd | 2,365,261 | $68.3M | 0.15% | −366,460−13.4% | Reduced |
| Charles Schwab Investment Management Inc | 2,286,390 | $66.1M | 0.01% | +49,133+2.2% | Added |
| Northern Trust Corp | 2,245,716 | $64.9M | 0.01% | −74,595−3.2% | Reduced |
| Zazove Associates LLC | – | $62.4M | 5.11% | – | – |
| Bank of New York Mellon Corp | 2,801,030 | $61.4M | 0.01% | −459,607−14.1% | Reduced |
| Mirae Asset Global ETFs Holdings Ltd. | 2,081,631 | $60.1M | 0.07% | +162,950+8.5% | Added |
| Two Sigma Investments, LP | 154,365 | $57.6M | 0.04% | −29,400−16.0% | Reduced |
| Advent Capital Management | – | $57.2M | 1.30% | – | – |
| Bank of America Corp | 1,977,679 | $57.1M | 0.00% | +606,543+44.2% | Added |
| Allianz Asset Management GmbH | 1,976,969 | $57.1M | 0.05% | +246,931+14.3% | Added |
| Morgan Stanley | 1,966,257 | $56.8M | 0.00% | −273,247−12.2% | Reduced |
| Mackay Shields LLC | – | $55.3M | 1.85% | – | – |
| PGGM Investments | 1,874,895 | $54.2M | 1.33% | +621,038+49.5% | Added |
| UBS Group AG | 1,867,963 | $54.1M | 0.01% | +1,221,292+188.9% | Added |
| Aviva PLC | 1,842,517 | $53.2M | 0.08% | −84,278−4.4% | Reduced |
| Cooke & Bieler LP | 1,785,403 | $51.6M | 0.60% | +1,785,403 | New |
| Vanguard Fiduciary Trust Co | 1,643,323 | $47.5M | 0.01% | +14,979+0.9% | Added |
| Deutsche Bank AG | 1,558,916 | $46.0M | 0.01% | −174,780−10.1% | Reduced |
| CI Private Wealth, LLC | 1,554,196 | $44.9M | 0.06% | +164,373+11.8% | Added |
| Neumeier Poma Investment Counsel LLC | 1,514,378 | $43.8M | 3.00% | +210,465+16.1% | Added |
| Managed Asset Portfolios, LLC | 1,321,714 | $38.2M | 4.36% | +434,855+49.0% | Added |
| Citadel Advisors LLC | 1,287,534 | $37.2M | 0.02% | −453,377−26.0% | Reduced |
| Squarepoint Ops LLC | 641,945 | $37.0M | 0.07% | +224,602+53.8% | Added |
| JPMorgan Chase & Co | 1,136,843 | $33.3M | 0.00% | +221,935+24.3% | Added |
| UBS Asset Management Americas Inc | 1,106,392 | $32.0M | 0.01% | −41,877−3.6% | Reduced |
| Quantinno Capital Management LP | 1,103,758 | $31.9M | 0.04% | −447,418−28.8% | Reduced |
| Tudor Investment Corp Et Al | 30,120,000 | $31.7M | 0.13% | 00.0% | Unchanged |
| Standard Life Aberdeen plc | 1,068,968 | $30.9M | 0.04% | −353,245−24.8% | Reduced |
| Capital Research Global Investors | 1,020,653 | $29.5M | 0.00% | −81,797−7.4% | Reduced |
| Nuveen, LLC | 967,569 | $28.0M | 0.01% | +31,165+3.3% | Added |
| Nomura Asset Management Co Ltd | 954,294 | $27.6M | 0.06% | +73,917+8.4% | Added |
| Legal & General Group Plc | 945,909 | $27.3M | 0.01% | +32,139+3.5% | Added |
| BNP Paribas Arbitrage, SA | 833,747 | $26.9M | 0.01% | +138,543+19.9% | Added |
| L1 Capital International Pty Ltd | 925,433 | $26.7M | 1.57% | −30,733−3.2% | Reduced |
| Alberta Investment Management Corp | – | $26.4M | 0.15% | – | – |
| Pacer Advisors, Inc. | 910,227 | $26.3M | 0.07% | +838,184+1,163.4% | Added |
| Value Holdings Management Co. LLC | 907,325 | $26.2M | 4.38% | 00.0% | Unchanged |
| Wells Fargo & Company | 841,158 | $26.0M | 0.00% | −39,638−4.5% | Reduced |
| Royal Bank of Canada | 887,837 | $25.6M | 0.00% | +43,393+5.1% | Added |
| DeepCurrents Investment Group LLC | – | $22.5M | 0.77% | – | – |
| Price T Rowe Associates Inc | 767,634 | $22.2M | 0.00% | +183,172+31.3% | Added |
| Robeco Institutional Asset Management B.V. | 743,831 | $21.5M | 0.03% | +36,702+5.2% | Added |
| Bank of Montreal | 235,638 | $21.3M | 0.01% | −16,640−6.6% | Reduced |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 712,884 | $21.1M | 0.04% | +110,216+18.3% | Added |
| Gotham Asset Management, LLC | 708,634 | $20.5M | 0.05% | +513,608+263.4% | Added |
| Rhumbline Advisers | 693,805 | $20.0M | 0.02% | −19,962−2.8% | Reduced |
| Mirova | 669,611 | $19.3M | 0.71% | +57,889+9.5% | Added |
| Trillium Asset Management, LLC | 647,910 | $18.7M | 0.58% | +47,525+7.9% | Added |
| Fisher Asset Management, LLC | 647,795 | $18.7M | 0.01% | +35,193+5.7% | Added |
| Bank of Nova Scotia | 629,088 | $18.2M | 0.03% | +39,634+6.7% | Added |
| Absolute Investment Advisers LLC | 17,226,000 | $18.1M | 1.75% | −300,000−1.7% | Reduced |
| HSBC Holdings PLC | 628,625 | $18.0M | 0.01% | +197,653+45.9% | Added |
| Bridgewater Associates, LP | 608,211 | $17.6M | 0.07% | +394,266+184.3% | Added |
| Principal Financial Group Inc | 589,240 | $17.0M | 0.01% | +5,988+1.0% | Added |
| Schroder Investment Management Group | 578,614 | $16.7M | 0.01% | −286,175−33.1% | Reduced |
| King Luther Capital Management Corp | 569,160 | $16.4M | 0.07% | −1,216,305−68.1% | Reduced |
| California Public Employees Retirement System | 528,661 | $15.3M | 0.01% | +30,416+6.1% | Added |
| Wellesley Asset Management | – | $14.6M | 1.33% | – | – |
| HRT Financial LP | 502,154 | $14.5M | 0.03% | +502,154 | New |
| Swiss National Bank | 497,200 | $14.4M | 0.01% | +6,200+1.3% | Added |
| Balyasny Asset Management LLC | 1,456,640 | $14.2M | 0.03% | −4,977,831−77.4% | Reduced |
| Ninety One North America, Inc. | 485,767 | $14.0M | 0.66% | +72,618+17.6% | Added |
| Systematic Financial Management LP | 481,101 | $13.9M | 0.28% | +194,450+67.8% | Added |
| Sarasin & Partners LLP | 472,902 | $13.7M | 0.16% | +36,732+8.4% | Added |
| Barclays PLC | 440,903 | $13.3M | 0.00% | −3,094−0.7% | Reduced |
| SG Americas Securities, LLC | 451,073 | $13.0M | 0.01% | +15,898+3.7% | Added |
| Handelsbanken Fonder AB | 449,922 | $13.0M | 0.04% | +31,147+7.4% | Added |
| one8zero8, LLC | 440,672 | $12.7M | 2.52% | −10,800−2.4% | Reduced |
| Winslow Asset Management Inc | 437,305 | $12.6M | 2.20% | +4,767+1.1% | Added |
| Retirement Systems of Alabama | 428,289 | $12.4M | 0.04% | −51,315−10.7% | Reduced |
| Perpetual Ltd | 426,947 | $12.3M | 0.18% | +54,942+14.8% | Added |