TETRA TECH INC NEW TTEK
COM · Common Stock · CUSIP 88162G103 · ISIN US88162G1031
Company in Pasadena, United States
- SectorIndustrials
- IndustryServices-Engineering Services
- HeadquartersPasadena, CA
- Founded1966
- Websitetetratech.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($31.4m this quarter). Holder counts are more reliable. Shares outstanding: 262.8m as of 2025-07-21, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $35.85. Options: 12 managers hold calls ($22.6m notional), 14 hold puts ($43.2m).
Trends to Q2 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 412 |
| Q4 2022 | 469 |
| Q1 2023 | 444 |
| Q2 2023 | 456 |
| Q3 2023 | 471 |
| Q4 2023 | 510 |
| Q1 2024 | 513 |
| Q2 2024 | 602 |
| Q3 2024 | 646 |
| Q4 2024 | 639 |
| Q1 2025 | 570 |
| Q2 2025 | 591 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2023 | 211 | 218 |
| Q4 2023 | 202 | 234 |
| Q1 2024 | 224 | 241 |
| Q2 2024 | 306 | 228 |
| Q3 2024 | 287 | 291 |
| Q4 2024 | 278 | 327 |
| Q1 2025 | 293 | 325 |
| Q2 2025 | 308 | 280 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2024 | $14.8m | $27.7m | 1.87 |
| Q4 2024 | $8.6m | $24.3m | 2.84 |
| Q1 2025 | $15.1m | $46.3m | 3.07 |
| Q2 2025 | $22.6m | $43.2m | 1.91 |
Biggest buyers
| Capital Research Global Investors | New | +1.8m |
| M&G PLC | Added | +1.5m |
| STATE STREET CORP | Added | +1.3m |
| Freestone Grove Partners LP | New | +1.1m |
| SANDS CAPITAL MANAGEMENT, LLC | Added | +1.1m |
| Bornite Capital Management LP | New | +1.0m |
| ROYAL BANK OF CANADA | Added | +1.0m |
| FERNBRIDGE CAPITAL MANAGEMENT LP | New | +943.4k |
| Van Berkom & Associates Inc. | Added | +940.9k |
| AMERIPRISE FINANCIAL INC | Added | +873.2k |
Biggest sellers
| COOPER CREEK PARTNERS MANAGEMENT LLC | Sold out | -1.2m |
| Qube Research & Technologies Ltd | Sold out | -1.1m |
| Invesco Ltd. | Reduced | -1.1m |
| JACOBS LEVY EQUITY MANAGEMENT, INC | Reduced | -931.3k |
| TWO SIGMA INVESTMENTS, LP | Reduced | -888.7k |
| BlackRock, Inc. | Reduced | -744.0k |
| GOLDMAN SACHS GROUP INC | Reduced | -687.9k |
| Pictet Asset Management Holding SA | Reduced | -654.8k |
| D. E. Shaw & Co., Inc. | Reduced | -637.3k |
| VANGUARD GROUP INC | Reduced | -604.6k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $6.3m175.8k shares |
| JANE STREET GROUP, LLC | Added | $3.6m99.1k shares |
| CITADEL ADVISORS LLC | Added | $3.4m93.7k shares |
| Cubist Systematic Strategies, LLC | Reduced | $2.1m59.1k shares |
| SIMPLEX TRADING, LLC | Reduced | $2.0m54.5k shares |
| WOLVERINE TRADING, LLC | Reduced | $1.6m43.9k shares |
| GROUP ONE TRADING LLC | Reduced | $1.4m39.9k shares |
| Walleye Trading LLC | Added | $1.3m34.8k shares |
| Caption Management, LLC | New | $629.3k17.5k shares |
| TUDOR INVESTMENT CORP ET AL | Reduced | $338.0k9.4k shares |
Biggest puts
| Portman Square Capital LLP | Unchanged | $16.2m450.0k shares |
| BANK OF AMERICA CORP /DE/ | Unchanged | $11.5m320.0k shares |
| CITADEL ADVISORS LLC | Reduced | $5.0m140.4k shares |
| HSBC HOLDINGS PLC | Reduced | $2.7m75.6k shares |
| Cubist Systematic Strategies, LLC | Reduced | $2.0m54.5k shares |
| GROUP ONE TRADING LLC | Reduced | $1.4m39.2k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $1.1m31.1k shares |
| SIMPLEX TRADING, LLC | Reduced | $1.0m28.2k shares |
| Twin Tree Management, LP | New | $952.9k26.5k shares |
| CAPITAL FUND MANAGEMENT S.A. | New | $528.6k14.7k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| BlackRock, Inc. 13G · institution filed 2025-02-06 | 9.7% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-30 | 5.2% |
Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-27; now reported by VANGUARD CAPITAL MANAGEMENT LLC)
Insider purchases and sales in Q2 2025
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q3 2023 | 0 | — | 0 | — | — |
| Q4 2023 | 0 | — | 7 | $6.1m | — |
| Q1 2024 | 0 | — | 3 | $5.5m | — |
| Q2 2024 | 0 | — | 1 | $2.4m | — |
| Q3 2024 | 0 | — | 6 | $11.0m | — |
| Q4 2024 | 0 | — | 0 | — | — |
| Q1 2025 | 0 | — | 1 | $347.3k | — |
| Q2 2025 | 0 | — | 0 | — | — |
None reported in Q2 2025.
Holders, Q2 2025
| Manager | Shares | Change |
|---|---|---|
| VANGUARD GROUP INC 0.02% of their portfolio | 26.6m $955.9m | Reduced -604.6k |
| BlackRock, Inc. 0.02% of their portfolio | 25.7m $924.0m | Reduced -744.0k |
| Pictet Asset Management Holding SA 0.51% of their portfolio | 13.8m $498.0m | Reduced -654.8k |
| STATE STREET CORP 0.02% of their portfolio | 11.9m $429.4m | Added +1.3m |
| NEUBERGER BERMAN GROUP LLC 0.25% of their portfolio | 8.9m $320.2m | Reduced -37.6k |
| Amundi 0.07% of their portfolio | 6.8m $214.0m | Added +88.2k |
| ALLIANCEBERNSTEIN L.P. 0.07% of their portfolio | 5.9m $211.3m | Reduced -265.7k |
| SANDS CAPITAL MANAGEMENT, LLC 0.54% of their portfolio | 5.2m $187.0m | Added +1.1m |
| GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 5.0m $178.5m | Reduced -28.1k |
| Sarasin & Partners LLP 1.68% of their portfolio | 4.7m $168.4m | Added +55.0k |
| FIL Ltd 0.14% of their portfolio | 4.7m $167.3m | Added +192.6k |
| DIMENSIONAL FUND ADVISORS LP 0.03% of their portfolio | 3.5m $127.5m | Added +443.8k |
| BANK OF AMERICA CORP /DE/ 0.01% of their portfolio | 3.0m $106.8m | Reduced -25.7k |
| NORGES BANK 0.01% of their portfolio | 2.9m $104.8m | Reduced -152.7k |
| CITADEL ADVISORS LLC 0.09% of their portfolio | 2.9m $103.3m | Added +670.2k |
| LGT Group Foundation 1.26% of their portfolio | 2.8m $100.8m | Added +68.2k |
| Robeco Schweiz AG 2.32% of their portfolio | 2.8m $100.6m | Reduced -394.2k |
| Ninety One UK Ltd 0.24% of their portfolio | 2.8m $100.4m | Reduced -198.3k |
| MORGAN STANLEY 0.01% of their portfolio | 2.7m $96.9m | Reduced -336.3k |
| NORTHERN TRUST CORP 0.01% of their portfolio | 2.6m $93.3m | Reduced -282.7k |
| Invesco Ltd. 0.02% of their portfolio | 2.5m $91.0m | Reduced -1.1m |
| Bank of New York Mellon Corp 0.02% of their portfolio | 2.5m $89.9m | Added +46.6k |
| M&G PLC 0.48% of their portfolio | 2.4m $87.0m | Added +1.5m |
| AMERIPRISE FINANCIAL INC 0.02% of their portfolio | 2.4m $86.2m | Added +873.2k |
| Zurcher Kantonalbank (Zurich Cantonalbank) 0.19% of their portfolio | 2.2m $79.2m | Added +530.7k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio | 2.1m $75.9m | Reduced -20.2k |
| Van Berkom & Associates Inc. 2.21% of their portfolio | 2.1m $74.2m | Added +940.9k |
| Capital International Investors 0.01% of their portfolio | 2.0m $72.9m | Reduced -224 |
| Allianz Asset Management GmbH 0.10% of their portfolio | 2.0m $72.6m | Reduced -229.1k |
| Corient Private Wealth LP 0.10% of their portfolio | 2.0m $72.6m | Reduced -156.1k |
| ROYAL BANK OF CANADA 0.01% of their portfolio | 1.9m $69.3m | Added +1.0m |
| Copeland Capital Management, LLC 1.37% of their portfolio | 1.9m $66.7m | Reduced -147.8k |
| BOWEN HANES & CO INC 1.67% of their portfolio | 1.8m $66.0m | Reduced -19.3k |
| Capital Research Global Investors 0.01% of their portfolio | 1.8m $64.3m | New |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.12% of their portfolio | 1.8m $63.2m | Reduced -20.3k |
| KING LUTHER CAPITAL MANAGEMENT CORP 0.26% of their portfolio | 1.6m $59.1m | Added +105.3k |
| Aberdeen Group plc 0.09% of their portfolio | 1.6m $55.8m | Added +50.8k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.01% of their portfolio | 1.5m $53.0m | Added +551.4k |
| WELLINGTON MANAGEMENT GROUP LLP 0.01% of their portfolio | 1.4m $49.8m | Reduced -93.4k |
| Premier Fund Managers Ltd 1.70% of their portfolio | 1.3m $46.5m | Added +305.3k |
| FIRST TRUST ADVISORS LP 0.04% of their portfolio | 1.3m $46.8m | Reduced -92.5k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 1.3m $46.1m | Reduced -45.0k |
| JACOBS LEVY EQUITY MANAGEMENT, INC 0.18% of their portfolio | 1.3m $46.0m | Reduced -931.3k |
| Freestone Grove Partners LP 0.31% of their portfolio | 1.1m $40.7m | New |
| SCHRODER INVESTMENT MANAGEMENT GROUP 0.03% of their portfolio | 1.1m $38.3m | Reduced -272.5k |
| TimesSquare Capital Management, LLC 0.54% of their portfolio | 1.0m $37.7m | Reduced -127.4k |
| Bornite Capital Management LP 3.70% of their portfolio | 1.0m $37.0m | New |
| UBS Group AG 0.01% of their portfolio | 1.0m $36.9m | Reduced -53.2k |
| AVIVA PLC 0.07% of their portfolio | 992.5k $35.7m | Added +168.4k |
| Allspring Global Investments Holdings, LLC 0.06% of their portfolio | 980.3k $35.4m | Added +57.2k |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 970.4k $34.9m | Reduced -687.9k |
| BESSEMER GROUP INC 0.06% of their portfolio | 970.0k $34.9m | Added +191.0k |
| iA Global Asset Management Inc. 0.51% of their portfolio | 949.7k $34.2m | Added +532.9k |
| FERNBRIDGE CAPITAL MANAGEMENT LP 1.62% of their portfolio | 943.4k $33.9m | New |
| SEGALL BRYANT & HAMILL, LLC 0.46% of their portfolio | 917.9k $33.0m | Added +133.2k |
| WELLS FARGO & COMPANY/MN 0.01% of their portfolio | 915.8k $32.9m | Reduced -26.2k |
| Nuveen, LLC 0.01% of their portfolio | 912.9k $32.8m | Reduced -87.5k |
| VALUE HOLDINGS MANAGEMENT CO. LLC 5.76% of their portfolio | 907.3k $32.6m | Unchanged |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.02% of their portfolio | 906.2k $32.6m | Added +370.6k |
| NEUMEIER POMA INVESTMENT COUNSEL LLC 2.97% of their portfolio | 887.5k $31.9m | Added +337.6k |
| MILLENNIUM MANAGEMENT LLC 0.03% of their portfolio | 875.7k $31.5m | Added +145.8k |
| NOMURA ASSET MANAGEMENT CO LTD 0.09% of their portfolio | 864.9k $31.1m | Reduced -579.5k |
| DEUTSCHE BANK AG\ 0.01% of their portfolio | 863.0k $31.0m | Reduced -288.1k |
| MANAGED ASSET PORTFOLIOS, LLC 4.00% of their portfolio | 855.6k $30.8m | Added +11.7k |
| PGGM Investments 0.52% of their portfolio | 831.7k $29.9m | Added +341.4k |
| Quantinno Capital Management LP 0.12% of their portfolio | 792.1k $28.5m | Added +413.9k |
| BNP PARIBAS FINANCIAL MARKETS 0.02% of their portfolio | 769.6k $27.7m | Reduced -12.6k |
| Rockefeller Capital Management L.P. 0.03% of their portfolio | 758.6k $27.3m | Reduced -81.8k |
| BANK OF NOVA SCOTIA 0.06% of their portfolio | 751.4k $27.0m | Added +255 |
| GROUPAMA ASSET MANAGMENT 0.01% of their portfolio | 750.0k $845.2k | Unchanged |
| Artemis Investment Management LLP 0.35% of their portfolio | 746.5k $26.8m | Added +641.8k |
| ENVESTNET ASSET MANAGEMENT INC 0.01% of their portfolio | 745.6k $26.8m | Reduced -37.1k |
| RHUMBLINE ADVISERS 0.02% of their portfolio | 731.1k $26.3m | Reduced -13.3k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.03% of their portfolio | 727.6k $26.2m | Added +11.4k |
| Fisher Asset Management, LLC 0.01% of their portfolio | 725.6k $26.1m | Reduced -139.4k |
| Robeco Institutional Asset Management B.V. 0.04% of their portfolio | 650.5k $23.4m | Added +68.1k |
| PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio | 598.4k $21.5m | Reduced -23.3k |
| BAILLIE GIFFORD & CO 0.02% of their portfolio | 587.9k $21.1m | Added +586.9k |
| JANE STREET GROUP, LLC 0.03% of their portfolio | 560.6k $20.2m | New |
| LPL Financial LLC 0.01% of their portfolio | 543.9k $19.6m | Reduced -29.1k |
| MARSHALL WACE, LLP 0.02% of their portfolio | 522.3k $18.8m | New |
| California Public Employees Retirement System 0.01% of their portfolio | 506.1k $18.2m | Added +21.6k |
| Candriam S.C.A. 0.10% of their portfolio | 498.3k $17.9m | Added +41.6k |
| Russell Investments Group, Ltd. 0.02% of their portfolio | 497.8k $17.9m | Reduced -34.7k |
| CI INVESTMENTS INC. 0.07% of their portfolio | 497.5k $17.9m | Added +491.6k |
| SEI INVESTMENTS CO 0.02% of their portfolio | 490.8k $17.6m | Added +96.5k |
| Swiss National Bank 0.01% of their portfolio | 486.5k $17.5m | Reduced -32.7k |
| J. Safra Sarasin Holding AG 0.30% of their portfolio | 479.7k $17.3m | Reduced -41.0k |
| one8zero8, LLC 3.90% of their portfolio | 459.7k $16.5m | Reduced -10.8k |
| WINSLOW ASSET MANAGEMENT INC 3.25% of their portfolio | 447.9k $16.1m | Added +8.3k |
| Legal & General Group Plc 0.00% of their portfolio | 440.3k $15.8m | Reduced -131 |
| Retirement Systems of Alabama 0.05% of their portfolio | 425.8k $15.3m | Added +48.8k |
| TRILLIUM ASSET MANAGEMENT, LLC 0.41% of their portfolio | 423.0k $15.2m | Reduced -13.0k |
| Susquehanna Portfolio Strategies, LLC 0.33% of their portfolio | 416.7k $15.0m | New |
| Tidal Investments LLC 0.10% of their portfolio | 413.5k $14.9m | Reduced -16.1k |
| RENAISSANCE TECHNOLOGIES LLC 0.02% of their portfolio | 392.5k $14.1m | Added +127.5k |
| Ninety One North America, Inc. 0.68% of their portfolio | 384.8k $13.8m | Added +19.1k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 374.8k $13.5m | Added +185.2k |
| HSBC HOLDINGS PLC 0.01% of their portfolio | 364.5k $13.1m | Reduced -37.0k |
| AEGON ASSET MANAGEMENT UK Plc 0.16% of their portfolio | 342.6k $12.3m | Reduced -623 |