# TETRA TECH INC NEW COM

TETRA TECH INC NEW COM is a security (CUSIP 88162G103) tracked across SEC portfolio filings. 595 institutional managers reported $6.8B on Form 13F as of 2026-06-30; 49 registered fund positions totaling $695.7M via N-PORT as of 2026-05-31.

## Summary

- Issuer: TETRA TECH INC NEW
- Class: COM
- CUSIP: 88162G103
- Asset category: EC
- 13F holders: 595
- 13F value: $6.8B
- 13F period: 2026-06-30
- N-PORT fund positions: 49
- N-PORT value: $695.7M
- N-PORT report: 2026-05-31

## Top institutional holders (Form 13F)

_Showing 15 of 595 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $865.4M | 25,800,544 |
| BlackRock, Inc. | New York, NY | $806.9M | 26,790,406 |
| Capital International Investors | Los Angeles, CA | $342.9M | 11,385,267 |
| STATE STREET CORP | BOSTON, MA | $290.2M | 9,635,912 |
| NEUBERGER BERMAN GROUP LLC | NEW YORK, NY | $219.0M | 7,269,657 |
| [SANDS CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/137610) | ARLINGTON, VA | $200.6M | 6,658,823 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $157.2M | 5,217,448 |
| FIL Ltd | HAMILTON, D0 | $145.6M | 4,832,672 |
| WELLINGTON MANAGEMENT GROUP LLP | BOSTON, MA | $144.7M | 4,804,049 |
| AMUNDI | PARIS, I0 | $143.1M | 4,749,247 |
| Pictet Asset Management Holding SA | CAROUGE, V8 | $137.5M | 4,759,290 |
| Impax Asset Management Group plc | LONDON, X0 | $115.4M | 3,830,074 |
| DIMENSIONAL FUND ADVISORS LP | AUSTIN, TX | $114.1M | 3,789,240 |
| [FERNBRIDGE CAPITAL MANAGEMENT LP](https://search.stillhousedata.com/firm/309334) | LOS ANGELES, CA | $102.4M | 3,400,775 |
| FULLER & THALER ASSET MANAGEMENT, INC. | San Mateo, CA | $99.8M | 3,314,443 |

## Top fund holders (N-PORT)

_Showing 15 of 49 fund positions by value._

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| State Street SPDR S&P MidCap 400SM ETF Trust | SPDR S&P MIDCAP 400 ETF TRUST | $236.8M | 97.79% |
| [New Perspective Fund](https://search.stillhousedata.com/fund/S000009613) | New Perspective Fund | $122.5M | 8.02% |
| [SMALLCAP World Fund Inc](https://search.stillhousedata.com/fund/S000009599) | SMALLCAP World Fund Inc | $99.6M | 12.29% |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $87.7M | 10.76% |
| [Growth Fund of America](https://search.stillhousedata.com/fund/S000009228) | Growth Fund of America | $45.3M | 1.26% |
| [Old Westbury Large Cap Strategies Fund](https://search.stillhousedata.com/fund/S000001858) | Old Westbury Funds Inc | $27.5M | 10.95% |
| [AB SUSTAINABLE GLOBAL THEMATIC FUND, INC.](https://search.stillhousedata.com/fund/S000010074) | AB SUSTAINABLE GLOBAL THEMATIC FUND, INC. | $20.4M | 151.24% |
| [Nicholas Limited Edition, Inc.](https://search.stillhousedata.com/fund/S000009136) | Nicholas Limited Edition, Inc. | $6.5M | 198.56% |
| [T. Rowe Price Diversified Mid-Cap Growth Fund, Inc.](https://search.stillhousedata.com/fund/S000002073) | T. ROWE PRICE DIVERSIFIED MID-CAP GROWTH FUND, INC. | $5.6M | 13.08% |
| [Columbia Mid Cap Index Fund](https://search.stillhousedata.com/fund/S000010826) | COLUMBIA FUNDS SERIES TRUST | $5.1M | 20.15% |
| [Large Cap Index Master Portfolio](https://search.stillhousedata.com/fund/S000033023) | Master Investment Portfolio | $4.8M | 1.32% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $4.4M | 0.75% |
| [Aberdeen Global Equity Impact Fund](https://search.stillhousedata.com/fund/S000006118) | ABERDEEN INVESTMENT FUNDS | $3.9M | 514.99% |
| [VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002855) | VANGUARD INSTITUTIONAL INDEX FUNDS | $3.8M | 1.24% |
| [BNY Mellon Midcap Index Fund, Inc.](https://search.stillhousedata.com/fund/S000000078) | BNY MELLON MIDCAP INDEX FUND, INC. | $3.4M | 24.51% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/88162G103.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.