TTEK — TETRA TECH INC NEW
Public company
InvestorLens aggregates public filing data to show which tracked investors reported holdings in this stock. Dollar values represent reported position values, not market capitalization, and may be delayed up to 45 days. Not a recommendation.
Sourced from SEC EDGAR public filings
Why are billionaires buying TTEK?
Built from public SEC filings and public economic data. Not a recommendation.
Why? — Evidence & Confidence ▾
Of 1 tracked investors who changed their TTEK position last quarter, 1 bought and 0 sold (100% buy-side). Macro conditions are mixed for this sector (Macro Tailwind 56/100 in a Overheat regime).
- +1 tracked investor added or increased positions last quarter (Ray Dalio)
- +4 tracked investors reported holding TTEK at their latest filing
- +Macro Health is 56/100 in a Overheat regime — historically acceptable for this sectorsource
- −13F data is disclosed up to 45 days after quarter end — positions may have changed since
- · 13F disclosure lag (up to 45 days)
- · Tracked investors are a sample, not the whole market
- · Sector regime fit is a historical average, not a guarantee
Every InvestorLens score shows its evidence — including what argues against it. Model conviction-v1 · generated 9/18/2026.
About TETRA TECH INC NEW (TTEK)
TETRA TECH INC NEW (TTEK) appears in the most recent 13F filings of 4 tracked institutional investors. The largest disclosed position is held by Ken Griffin (Citadel Advisors), valued at $112M. Across recent filings, tracked investors recorded 2 new positions, 6 increased, 1 reduced, and 1 exited. All data sourced from SEC 13F filings.
Based on recent institutional activity in TTEK
How many top investors track TTEK
A small number of top investors own this.
TTEK Ownership Composition
How TETRA TECH INC NEW is held across tracked investor types, based on reported 13F positions.
- Multi-Strategy / Quant63.9%
- Macro36.1%
Tracked investors currently reporting TTEK
2 tracked investors have since exited this position — listed separately below.
- Ken GriffinJun 30, 2026Citadel AdvisorsShares1.3MValue$38.5M% Portfolio0.00%
- Steve CohenJun 30, 2026Point72 Asset ManagementShares46MValue$48.5M% Portfolio0.05%
- Paul Tudor JonesJun 30, 2026Tudor Investment CorpShares30.1MValue$31.7M% Portfolio0.04%
- Ray DalioJun 30, 2026Bridgewater AssociatesShares608.2KValue$17.6M% Portfolio0.07%
Previously held TTEK
These investors reported TTEK in an earlier quarter but not in their most recent 13F. Figures below are their last reported position, not a current holding.
| Investor | Firm | Last reported shares | Value then | Last held |
|---|---|---|---|---|
| Izzy Englander | Millennium Management | 266.6K | $8M | Mar 31, 2026 |
| Howard Marks | Oaktree Capital Management | 15.3M | $16.6M | Dec 31, 2025 |
Recent activity
- New$8MNov 14, 2024
- Increased$7.4M(3.75%)Feb 12, 2025
- Reduced$1.9M(-71.07%)May 15, 2025
- Increased$7.9M(281.65%)Aug 13, 2025
- Increased$12.9M(70.83%)Nov 13, 2025
- Increased$16.6M(28.43%)Feb 17, 2026
- Sold$0(-100.00%)May 20, 2026
- New$2.2MFeb 13, 2026
- Increased$6.4M(232.72%)May 15, 2026
- Increased$17.6M(184.28%)Aug 14, 2026
Frequently asked questions
- How many institutional investors hold TTEK?
- 4 tracked institutional investors disclosed a position in TTEK (TETRA TECH INC NEW) in their most recent 13F filing.
- Who is the largest institutional holder of TTEK?
- Ken Griffin, Citadel Advisors, holds the largest disclosed position in TTEK, valued at $112M.
- Did institutional ownership of TTEK increase or decrease?
- Across recent 13F filings, tracked investors recorded 2 new positions, 6 increased, 1 reduced, and 1 fully exited TTEK.
- Where does this TTEK ownership data come from?
- SEC Form 13F-HR filings, accessed via EDGAR. 13F filings are disclosed quarterly with a 45-day reporting delay and cover U.S.-listed long equity positions only. This is not investment advice.