Who owns TETRA TECH INC?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of TTEK from SEC Form 13F filings across 552 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 552 institutions disclosed 253.3M shares of TETRA TECH INC worth $7.32B — about 98.1% of shares outstanding; the largest disclosed holder is BlackRock, Inc.. Source: SEC Form 13F filings, parsed by EvidInvest.
552
13F holders
$7.32B
value, 2026 filers
98.1%
of shares outstanding (253.3M sh)
65
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of TTEK's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 28.7M | $828.4M | 0.0% | 11.1% | +7.0% |
| 2 | VANGUARD PORTFOLIO MANAGEMENT LLC | 12.5M | $360.2M | 0.0% | 4.8% | -1.4% |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 11.7M | $338.8M | 0.0% | 4.5% | +0.1% |
| 4 | Capital International Investors | 11.7M | $336.6M | 0.1% | 4.5% | +2.3% |
| 5 | STATE STREET CORP | 9.8M | $282.0M | 0.0% | 3.8% | +1.3% |
| 6 | FMR LLC | 8.8M | $253.3M | 0.0% | 3.4% | +2571.3% |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | 6.8M | $197.4M | 0.0% | 2.6% | +31.0% |
| 8 | FIL Ltd | 5.5M | $158.1M | 0.1% | 2.1% | +13.2% |
| 9 | Amundi | 5.1M | $147.3M | 0.0% | 2% | +7.4% |
| 10 | FULLER & THALER ASSET MANAGEMENT, INC. | 4.9M | $142.2M | 0.4% | 1.9% | +48.5% |
| 11 | Pictet Asset Management Holding SA | 4.8M | $137.5M | 0.1% | 1.8% | -50.7% |
| 12 | WELLINGTON MANAGEMENT GROUP LLP | 4.7M | $135.0M | 0.0% | 1.8% | -2.7% |
| 13 | DIMENSIONAL FUND ADVISORS LP | 4.4M | $128.5M | 0.0% | 1.7% | +17.3% |
| 14 | NEUBERGER BERMAN GROUP LLC | 4.4M | $127.4M | 0.1% | 1.7% | -39.4% |
| 15 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 4.4M | $126.9M | 0.1% | 1.7% | +708.5% |
| 16 | Invesco Ltd. | 4.1M | $118.9M | 0.0% | 1.6% | +40.3% |
| 17 | AQR CAPITAL MANAGEMENT LLC | 4.1M | $117.1M | 0.0% | 1.6% | +171.5% |
| 18 | Impax Asset Management Group plc | 3.9M | $113.6M | 0.7% | 1.5% | +2.7% |
| 19 | LGT Group Foundation | 3.7M | $108.2M | 1.2% | 1.5% | +18.5% |
| 20 | NORGES BANKNEW | 3.2M | $93.3M | 0.0% | 1.3% | new |
| 21 | Robeco Schweiz AG | 3.1M | $89.5M | 1.4% | 1.2% | +35.5% |
| 22 | M&G PLC | 2.8M | $80.5M | 0.4% | 1.1% | +19.7% |
| 23 | AMERIPRISE FINANCIAL INC | 2.7M | $78.9M | 0.0% | 1.1% | +35.1% |
| 24 | GOLDMAN SACHS GROUP INC | 2.6M | $76.5M | 0.0% | 1% | +37.4% |
| 25 | FIRST TRUST ADVISORS LP | 2.6M | $74.0M | 0.0% | 1% | +4.7% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.