CHARLES SCHWAB INVESTMENT MANAGEMENT INC
Position in TTEK — Tetra Tech Inc
CIK 884546
SAN FRANCISCO, CA
Position in TTEK
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$66,053,806
-$1,332,374 QoQ
Shares Held
2,286,390
+2.2% QoQ
Ownership
0.893%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
#29
of 543 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in TTEK Over Time
Shares Held
Position Value (USD)
Position in Engineering & Construction
Industrials · as of Jun 30, 2026CHARLES SCHWAB INVESTMENT MANAGEMENT INC holds $3,791,857,827 across 37 Engineering & Construction names. TTEK ranks #17 (1.7% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | PWR |
Quanta Services, Inc.
|
1,207,652 | $869,557,745 | |
| 2 | FIX |
Comfort Systems USA Inc
|
297,845 | $590,313,897 | |
| 3 | EME |
EMCOR Group, Inc.
|
368,895 | $306,138,581 | |
| 4 | STRL |
Sterling Infrastructure, Inc.
|
318,224 | $267,104,496 | |
| 5 | MTZ |
Mastec Inc
|
551,319 | $229,381,782 | |
| 6 | DY |
Dycom Industries Inc
|
346,896 | $175,387,148 | |
| 7 | APG |
APi Group Corp
|
2,953,405 | $125,076,700 | |
| 8 | AGX |
Argan Inc
|
144,771 | $115,606,882 |
All Filings in TTEK
Export CSV
26 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $66,053,806 | 2,286,390 | Shares | Sole | 2026-08-14 | |
| 2026-03-31 | $67,386,180 | 2,237,257 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $72,412,524 | 2,158,990 | Shares | Sole | 2026-02-13 | |
| 2025-09-30 | $71,146,599 | 2,131,414 | Shares | Sole | 2025-11-10 | |
| 2025-06-30 | $75,914,652 | 2,111,086 | Shares | Sole | 2025-08-12 | |
| 2025-03-31 | $62,340,320 | 2,131,293 | Shares | Sole | 2025-09-15 | |
| 2024-12-31 | $82,940,465 | 2,081,839 | Shares | Sole | 2025-02-06 | |
| 2024-09-30 | $97,643,978 | 2,070,483 | Shares | Sole | 2024-11-12 | |
| 2024-06-30 | $92,480,578 | 452,272 | Shares | Sole | 2024-08-12 | |
| 2024-03-31 | $82,310,285 | 445,619 | Shares | Sole | 2024-05-09 | |
| 2023-12-31 | $73,283,438 | 439,007 | Shares | Sole | 2024-02-06 | |
| 2023-09-30 | $64,436,091 | 423,838 | Shares | Sole | 2023-11-08 | |
| 2023-06-30 | $91,488,906 | 558,745 | Shares | Sole | 2023-08-10 | |
| 2023-03-31 | $82,887,062 | 564,203 | Shares | Sole | 2023-05-12 | |
| 2022-12-31 | $81,005,130 | 557,925 | Shares | Sole | 2023-02-13 | |
| 2022-09-30 | $69,758,115 | 542,738 | Shares | Sole | 2022-11-14 | |
| 2022-06-30 | $72,521,841 | 531,101 | Shares | Sole | 2022-08-15 | |
| 2022-03-31 | $105,194,113 | 637,772 | Shares | Sole | 2022-05-13 | |
| 2021-12-31 | $103,869,037 | 611,714 | Shares | Sole | 2022-02-11 | |
| 2021-09-30 | $89,800,232 | 601,314 | Shares | Sole | 2021-11-16 | |
| 2021-06-30 | $73,641,620 | 603,422 | Shares | Sole | 2021-08-16 | |
| 2021-03-31 | $78,678,919 | 579,715 | Shares | Sole | 2021-05-17 | |
| 2020-12-31 | $66,120,105 | 571,084 | Shares | Sole | 2021-02-16 | |
| 2020-09-30 | $54,550,555 | 571,210 | Shares | Sole | 2020-11-13 | |
| 2020-06-30 | $37,352,789 | 472,103 | Shares | Sole | 2020-08-20 | |
| 2020-03-31 | $34,709,376 | 491,495 | Shares | Sole | 2020-05-15 | |
| No filing history on record for this holder in this stock. | ||||||