TETRA TECH INC NEW - 88162GAB9
Detailed investor-level table based on 13F positions.
Early Q1 2026 data: only 1 institutional holders reported so far. The full shareholder list will grow as more funds file with the SEC.
Methodology:
Market value and % of portfolio use SEC reported VALUE ($000).
For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received.
Details.
Rows: 0
| Investor | History | Status | Shares held | Market value ($000) | % of portfolio | Previous % | Rank | Change in shares | % change in shares | Source | Date reported |
|---|---|---|---|---|---|---|---|---|---|---|---|
| MACKAY SHIELDS LLC | History | Added to | 59,623,000 | 64,815 | 2.27% | 2.16% | 1 | +1,025,000 | 1.75% | Q4 2025 | Jan 29, 2026 |
| ZAZOVE ASSOCIATES LLC | History | Added to | 56,880,000 | 61,789 | 5.32% | 5.5% | 2 | +465,000 | 0.82% | Q4 2025 | Feb 18, 2026 |
| CAMDEN ASSET MANAGEMENT L P /CA | History | No change | 46,501,000 | 50,393 | 1.28% | 1.11% | 3 | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| ADVENT CAPITAL MANAGEMENT /DE/ | History | Reduced | 43,876,000 | 48,088 | 0.97% | 1.06% | 4 | -998,000 | -2.22% | Q4 2025 | Feb 09, 2026 |
| Point72 Asset Management, L.P. | History | Added to | 36,765,000 | 39,935 | 0.04% | 0.06% | 5 | +1,500,000 | 4.25% | Q4 2025 | Feb 17, 2026 |
| TWO SIGMA INVESTMENTS, LP | History | Added to | 33,000,000 | 35,762 | 0.05% | 0.05% | 6 | +5,000,000 | 17.86% | Q4 2025 | Feb 17, 2026 |
| Alberta Investment Management Corp | History | No change | 25,000,000 | 27,157 | 0.16% | 0.19% | 7 | 0 | 0.0% | Q4 2025 | Feb 19, 2026 |
| WOLVERINE ASSET MANAGEMENT LLC | History | Added to | 20,930,000 | 22,739 | 0.18% | 0.14% | 8 | +4,000,000 | 23.63% | Q4 2025 | Feb 02, 2026 |
| Calamos Advisors LLC | History | Reduced | 20,408,000 | 22,169 | 0.08% | 0.08% | 9 | -30,000 | -0.15% | Q4 2025 | Jan 29, 2026 |
| DeepCurrents Investment Group LLC | History | New | 19,860,000 | 21,586 | 0.71% | — | 10 | +19,860,000 | New | Q4 2025 | Feb 13, 2026 |
| ABSOLUTE INVESTMENT ADVISERS, LLC | History | Added to | 15,526,000 | 16,848 | 1.92% | 1.88% | 11 | +1,587,000 | 11.39% | Q4 2025 | Jan 28, 2026 |
| OAKTREE CAPITAL MANAGEMENT LP | History | Added to | 15,289,000 | 16,626 | 0.24% | 0.2% | 12 | +3,384,000 | 28.43% | Q4 2025 | Feb 17, 2026 |
| BANK OF MONTREAL /CAN/ | History | No change | 15,300,000 | 16,614 | 0.01% | 0.01% | 13 | 0 | 0.0% | Q4 2025 | Feb 12, 2026 |
| STATE STREET CORP | History | Reduced | 12,474,000 | 13,633 | 0.0% | 0.0% | 14 | -26,000 | -0.21% | Q4 2025 | Feb 13, 2026 |
| FMR LLC | History | Reduced | 10,573,000 | 11,457 | 0.0% | 0.0% | 15 | -3,052,000 | -22.4% | Q4 2025 | Feb 17, 2026 |
| Weiss Asset Management LP | History | New | 10,000,000 | 10,863 | 0.15% | — | 16 | +10,000,000 | New | Q4 2025 | Feb 17, 2026 |
| SHENKMAN CAPITAL MANAGEMENT INC | History | Reduced | 8,656,000 | 9,746 | 1.03% | 1.0% | 17 | -451,000 | -4.95% | Q4 2025 | Feb 10, 2026 |
| READYSTATE ASSET MANAGEMENT LP | History | Added to | 8,515,000 | 9,259 | 0.38% | 0.23% | 18 | +3,515,000 | 70.3% | Q4 2025 | Feb 17, 2026 |
| BlackRock, Inc. | History | Added to | 7,189,000 | 7,790 | 0.0% | 0.0% | 19 | +1,700,000 | 30.97% | Q4 2025 | Feb 12, 2026 |
| OFI INVEST ASSET MANAGEMENT | History | No change | 7,000,000 | 6,525 | 0.09% | 0.14% | 20 | 0 | 0.0% | Q4 2025 | Jan 22, 2026 |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | History | No change | 5,750,000 | 6,253 | 0.01% | 0.01% | 21 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| CONNING INC. | History | No change | 5,600,000 | 6,068 | 0.2% | 0.2% | 22 | 0 | 0.0% | Q4 2025 | Feb 05, 2026 |
| Universal- Beteiligungs- und Servicegesellschaft mbH | History | Added to | 5,367,000 | 5,905 | 0.01% | 0.01% | 23 | +1,000,000 | 22.9% | Q4 2025 | Jan 28, 2026 |
| KIM, LLC | History | New | 5,000,000 | 5,437 | 0.44% | — | 24 | +5,000,000 | New | Q4 2025 | Feb 02, 2026 |
| Wellesley Asset Management | History | Added to | 4,890,000 | 5,318 | 0.55% | 0.38% | 25 | +1,400,000 | 40.11% | Q4 2025 | Feb 06, 2026 |
| Boussard & Gavaudan Investment Management LLP | History | New | 3,000 | 3,301 | 0.25% | — | 26 | +3,000 | New | Q4 2025 | Feb 12, 2026 |
| STATE OF WISCONSIN INVESTMENT BOARD | History | No change | 3,000,000 | 3,251 | 0.01% | 0.01% | 27 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| WELLINGTON MANAGEMENT GROUP LLP | History | Reduced | 2,850,000 | 3,116 | 0.0% | 0.0% | 28 | -500,000 | -14.93% | Q4 2025 | Feb 17, 2026 |
| BANK OF AMERICA CORP /DE/ | History | Reduced | 2,505,000 | 2,714 | 0.0% | 0.0% | 29 | -576,000 | -18.7% | Q4 2025 | Feb 17, 2026 |
| LAFFER TENGLER INVESTMENTS, INC. | History | Reduced | 2,267 | 2,501 | 0.38% | 0.38% | 30 | -19,933 | -89.79% | Q4 2025 | Feb 12, 2026 |
| WESTWOOD HOLDINGS GROUP INC | History | Added to | 2,500,000 | 2,500 | 0.02% | 0.01% | 31 | +1,000,000 | 66.67% | Q4 2025 | Feb 17, 2026 |
| PALISADE CAPITAL MANAGEMENT, LP | History | Reduced | 2,243,000 | 2,430 | 0.07% | 0.07% | 32 | -69,000 | -2.98% | Q4 2025 | Feb 17, 2026 |
| BNP PARIBAS FINANCIAL MARKETS | History | Reduced | 2,009,000 | 2,177 | 0.0% | 0.0% | 33 | -492,000 | -19.67% | Q4 2025 | Feb 10, 2026 |
| WELLS FARGO & COMPANY/MN | History | Added to | 1,861,000 | 2,020 | 0.0% | 0.0% | 34 | +457,000 | 32.55% | Q4 2025 | Feb 13, 2026 |
| MIZUHO SECURITIES USA LLC | History | Reduced | 1,719,000 | 1,883 | 0.03% | 0.06% | 35 | -981,000 | -36.33% | Q4 2025 | Feb 09, 2026 |
| Man Group plc | History | No change | 1,500,000 | 1,626 | 0.0% | 0.0% | 36 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| Zurcher Kantonalbank (Zurich Cantonalbank) | History | Reduced | 1,275,000 | 1,391 | 0.0% | 0.0% | 37 | -25,000 | -1.92% | Q4 2025 | Jan 27, 2026 |
| RWC Asset Management LLP | History | Reduced | 1,270,000 | 1,379 | 0.07% | 0.08% | 38 | -311,000 | -19.67% | Q4 2025 | Feb 11, 2026 |
| GROUPAMA ASSET MANAGMENT | History | New | 1,250,000 | 1,368 | 0.02% | — | 39 | +1,250,000 | New | Q4 2025 | Feb 27, 2026 |
| Russell Investments Group, Ltd. | History | Added to | 1,111,000 | 1,216 | 0.0% | 0.0% | 40 | +218,000 | 24.41% | Q4 2025 | Feb 17, 2026 |
| Candriam S.C.A. | History | No change | 1,050 | 1,149 | 0.01% | 0.01% | 41 | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| BARCLAYS PLC | History | Reduced | 1,046,000 | 1,135 | 0.0% | 0.0% | 42 | -141,000 | -11.88% | Q4 2025 | Feb 13, 2026 |
| DEUTSCHE BANK AG\ | History | Reduced | 951,000 | 1,030 | 0.0% | 0.0% | 43 | -173,000 | -15.39% | Q4 2025 | Feb 11, 2026 |
| Bank of New York Mellon Corp | History | Reduced | 862,000 | 936 | 0.0% | 0.0% | 44 | -38,000 | -4.22% | Q4 2025 | Feb 10, 2026 |
| JPMORGAN CHASE & CO | History | Added to | 836,000 | 907 | 0.0% | 0.0% | 45 | +579,000 | 225.29% | Q4 2025 | Feb 11, 2026 |
| UBS Group AG | History | Added to | 633,330 | 686 | 0.0% | 0.0% | 46 | +632,000 | 47518.8% | Q4 2025 | Jan 29, 2026 |
| CITIGROUP INC | History | Added to | 609,000 | 659 | 0.0% | 0.0% | 47 | +499,000 | 453.64% | Q4 2025 | Feb 13, 2026 |
| SEI INVESTMENTS CO | History | No change | 533,000 | 577 | 0.0% | 0.0% | 48 | 0 | 0.0% | Q4 2025 | Feb 13, 2026 |
| SSI INVESTMENT MANAGEMENT LLC | History | Reduced | 505,000 | 547 | 0.04% | 0.17% | 49 | -1,832,000 | -78.39% | Q4 2025 | Feb 10, 2026 |
| Calamos Wealth Management LLC | History | Reduced | 322,000 | 349 | 0.01% | 0.01% | 50 | -63,000 | -16.36% | Q4 2025 | Jan 29, 2026 |
| ABN AMRO INVESTMENT SOLUTIONS | History | Reduced | 300 | 328 | 0.0% | 0.01% | 51 | -299,700 | -99.9% | Q4 2025 | Feb 06, 2026 |
| LOOMIS SAYLES & CO L P | History | New | 6,365 | 213 | 0.0% | — | 52 | +6,365 | New | Q4 2025 | Feb 12, 2026 |
| OPPENHEIMER ASSET MANAGEMENT INC. | History | Added to | 191,000 | 206 | 0.0% | 0.0% | 53 | +63,000 | 49.22% | Q4 2025 | Feb 02, 2026 |
| &PARTNERS | History | Reduced | 78,000 | 84 | 0.0% | 0.0% | 54 | -54,000 | -40.91% | Q4 2025 | Feb 17, 2026 |
| STEPHENS INC /AR/ | History | Added to | 59,000 | 63 | 0.0% | 0.0% | 55 | +18,000 | 43.9% | Q4 2025 | Feb 05, 2026 |
| FIL Ltd | History | No change | 44,000 | 47 | 0.0% | 0.0% | 56 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| Balboa Wealth Partners | History | Added to | 29,000 | 31 | 0.01% | 0.0% | 57 | +9,000 | 45.0% | Q4 2025 | Jan 16, 2026 |
| LAZARD ASSET MANAGEMENT LLC | History | Reduced | 2,432,000 | 26 | 0.0% | 0.0% | 58 | -3,790,000 | -60.91% | Q4 2025 | Feb 17, 2026 |
| MML INVESTORS SERVICES, LLC | History | New | 13,000 | 14 | 0.0% | — | 59 | +13,000 | New | Q4 2025 | Feb 13, 2026 |
| CoreCap Advisors, LLC | History | New | 4,000 | 4 | 0.0% | — | 61 | +4,000 | New | Q4 2025 | Jan 13, 2026 |
| Steward Partners Investment Advisory, LLC | History | No change | 4,000 | 4 | 0.0% | 0.0% | 60 | 0 | 0.0% | Q4 2025 | Feb 12, 2026 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | History | Closed out | 0 | 0 | — | 0.01% | — | -3,000,000 | -100.0% | Q3 2025 | Nov 13, 2025 |
| Invesco Ltd. | History | Closed out | 0 | 0 | — | 0.0% | — | -2,750,000 | -100.0% | Q3 2025 | Nov 13, 2025 |
| MACQUARIE GROUP LTD | History | Closed out | 0 | 0 | — | 0.0% | — | -1,200,000 | -100.0% | Q3 2025 | Nov 13, 2025 |
| JANE STREET GROUP, LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -724,000 | -100.0% | Q3 2025 | Nov 14, 2025 |
| NOMURA HOLDINGS INC | History | Closed out | 0 | 0 | — | 0.0% | — | -66,059 | -100.0% | Q3 2025 | Nov 14, 2025 |
| Clear Creek Financial Management, LLC | History | Closed out | 0 | 0 | — | 0.04% | — | -13,172 | -100.0% | Q3 2025 | Nov 10, 2025 |
| Lindenwold Advisors, INC | History | Closed out | 0 | 0 | — | 0.16% | — | -10,407 | -100.0% | Q3 2025 | Dec 16, 2025 |
| FIFTH THIRD BANCORP | History | Closed out | 0 | 0 | — | 0.0% | — | -8,000 | -100.0% | Q3 2025 | Nov 07, 2025 |