Tetra Tech Inc. 13F holders
Of the 44 funds followed here, 10 reported a position in Tetra Tech Inc. in a 13F for the quarter ended 30 June 2026. The largest: FMR LLC, 8.8 million shares worth $253.3 million, 0.0% of its reported book. Sold out: Renaissance Technologies.
| Fund | Shares | Value | Of its book | Change on the quarter | Status | Quarter ended | Filing |
|---|---|---|---|---|---|---|---|
| FMR LLC | 8,768,611 | $253.3 million | 0.0% | +8,440,359 | added | 30 June 2026 | 13F |
| Geode Capital Management | 6,833,071 | $197.4 million | 0.0% | +1,615,623 | added | 30 June 2026 | 13F |
| Norges Bank | 3,230,988 | $93.3 million | 0.0% | held | 30 June 2026 | 13F | |
| Citadel Advisors | 1,333,034 | $38.5 million | 0.0% | -455,577 | trimmed | 30 June 2026 | 13F |
| Capital Research Global Investors | 1,020,653 | $29.5 million | 0.0% | -81,797 | trimmed | 30 June 2026 | 13F |
| Point72 Asset Management | 1,011,149 | $29.2 million | 0.0% | +468,882 | added | 30 June 2026 | 13F |
| Bridgewater Associates | 608,211 | $17.6 million | 0.1% | +394,266 | added | 30 June 2026 | 13F |
| Two Sigma Investments | 154,365 | $4.5 million | 0.0% | -29,400 | trimmed | 30 June 2026 | 13F |
| Millennium Management | 11,498 | $332,177 | 0.0% | -255,075 | trimmed | 30 June 2026 | 13F |
| Baillie Gifford | 1,114 | $32,183 | 0.0% | -312,451 | trimmed | 30 June 2026 | 13F |
| Renaissance Technologies | 0 | $0 | 0.0% | -453,600 | exited | 30 June 2026 | 13F |
Value is what the fund reported.
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Change is shares against the fund's previous 13F; a fund with one filing read shows no change. 13Fs cover long US positions of managers above $100 million and are filed up to 45 days after the quarter.Schedule 13D and 13G filed on the name, last twelve months
| Filed | Schedule | Who | Holding | Of the class | Event date | Rule or purpose | Filing |
|---|---|---|---|---|---|---|---|
| 30 April 2026 | 13G | Vanguard Capital Management and 1 other | 13.7 million | 5.2% | 31 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 27 March 2026 | 13G/A | The Vanguard Group and 1 other | 0 | 0.0% | 13 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
A Schedule 13D is filed by anyone who crosses 5% of a class with intent to influence; a 13G by a passive holder.
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Amendments (/A) report a change, including an exit to zero. Holding and percentage are as the filer stated them on the cover page; the purpose is the filer's own words, cut short.Fails to deliver
| Settlement date | Shares failed | Price | File |
|---|---|---|---|
| 8 September 2026 | 343 | $35.91 | SEC |
| 3 September 2026 | 31,573 | $35.91 | SEC |
| 13 August 2026 | 3,870 | $35.50 | SEC |
| 6 August 2026 | 188 | $34.29 | SEC |
| 4 August 2026 | 23,698 | $33.83 | SEC |
Shares that failed to deliver at settlement, per day, from the SEC's half-month files, which arrive about two weeks after the period.
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Largest in the window: 31,573 on 3 September 2026. A fail is an operational fact about settlement, not a position.Source
Each fund's 13F-HR on EDGAR, linked per row; positions matched to TTEK by CUSIP from the SEC's own fails-to-deliver files; Schedule 13D and 13G from the company's own filing index, each read to confirm the company is the issuer named.
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