Supply breakdown
Shares as of Jul 20, 2026| Category | Shares | % | Value | Status |
|---|---|---|---|---|
| Circulating | 256.04M | 100.0% | $7.40B | Estimated |
| Free float | - | - | - | Unavailable |
| Insider-held, unrestricted | - | - | - | Unavailable |
| Locked team funds | - | - | - | Unavailable |
| Other restricted (unlisted classes only) | - | - | - | Unavailable |
| Total outstanding | 256.04M | 100.0% | $7.40B | Verified |
| Ownership views (overlap the categories above, never added) | ||||
| Institutional holdings (13F) | 253.09M | 98.8% | $7.31B | Estimated |
| Insider-held, all (Forms 3, 4, 5) | - | - | - | Unavailable |
Institutional and insider holdings can include both tradable and locked shares, so they are shown for reference and never added to the total. Check: no class has more shares deducted than it has outstanding, and the review found no shares that may be counted twice: reconciles.
Valuation
- Traditional$7.40B
- Fully diluted$7.44B
- Circulating$7.40B
- Free float-
- Locked team value$0
- Other restricted value$0
Locked and restricted shares
Not reviewed yet.
Institutional holders
13F, quarter ended Jun 30, 2026| Holder | Shares | % of total |
|---|---|---|
| BlackRock, Inc. | 28.68M | 11.20% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 12.47M | 4.87% |
| VANGUARD CAPITAL MANAGEMENT LLC | 11.73M | 4.58% |
| Capital International Investors | 11.65M | 4.55% |
| STATE STREET CORP | 9.76M | 3.81% |
| FMR LLC | 8.77M | 3.42% |
| GEODE CAPITAL MANAGEMENT, LLC | 6.83M | 2.67% |
| FIL Ltd | 5.47M | 2.14% |
| Amundi | 5.10M | 1.99% |
| FULLER & THALER ASSET MANAGEMENT, INC. | 4.92M | 1.92% |
Sum of long share positions in Form 13F reports for the quarter. 13F covers managers with over $100M in US equities; some positions are reported by more than one filer.
Insiders
Forms 3, 4 and 5Form 4 aggregation pending
Share classes
| Class | Listing | Shares outstanding | As of |
|---|---|---|---|
| Common stock | TTEK on Nasdaq | 256,044,428 | Jul 20, 2026 |
Notes and sources
- TETRA TECH INC 10-Q for period ended 2026-06-28, Cover page (0000831641-26-000017)
- SEC public float (non-affiliates): $7.60B as of Mar 30, 2025, from the 10-K cover. It is a dollar value at a past date, not circulating supply.