Tetra Tech, Inc.

Historical 13F Holders

Symbol
TTEK
CUSIP
88162G103
All holders as of
Q2 2026
Type
Equity
Class
COM
Reported Value, Excluding Options
Total Filings

13D/G Filers

Investors who own more than 5% of a class must file a Schedule 13D or 13G. Every filing for 88162G103 since 12/18/2024, newest first.

Filer % of Class Filed
Vanguard Capital Management LLC 13G 5.2% 4/30/2026
Event 3/31/2026
Vanguard Group Inc 13G/A Amendment 16 0% 3/27/2026
Event 3/13/2026
Pictet Asset Management SA 13D/A Amendment 2 4.9% 10/17/2025
Event 10/16/2025
Pictet Asset Management SA 13D/A Amendment 1 5.3% 4/15/2025
Event 4/15/2025
Pictet Asset Management SA 13D 5.3% 4/15/2025
Event 4/15/2025
Vanguard Group Inc 13G/A Amendment 15 10.1% 4/7/2025
Event 3/31/2025
Pictet Asset Management SA 13G 5.2% 2/11/2025
Event 12/31/2024
BlackRock, Inc. 13G/A Amendment 17 9.7% 2/6/2025
Event 12/31/2024

13F Holders by Quarter

Period Filings Shares, Excl. Options Value, Excl. Options
2026 Q3 39 4.29 M $135 M
2026 Q2 571 262 M $7.61 B
2026 Q1 612 246 M $7.42 B
2025 Q4 628 244 M $8.24 B
2025 Q3 631 252 M $8.40 B
2025 Q2 618 252 M $8.99 B
2025 Q1 596 247 M $7.20 B
2024 Q4 659 239 M $9.50 B
2024 Q3 666 243 M $11.4 B
2024 Q2 625 49.9 M $10.2 B
2024 Q1 530 49.0 M $9.03 B
2023 Q4 532 49.2 M $8.21 B
2023 Q3 491 47.3 M $7.16 B
2023 Q2 471 47.8 M $7.81 B
2023 Q1 461 47.2 M $6.93 B
2022 Q4 488 48.5 M $7.11 B
2022 Q3 424 46.1 M $5.92 B
2022 Q2 428 46.3 M $6.31 B
2022 Q1 423 48.1 M $7.94 B
2021 Q4 418 46.8 M $7.95 B
2021 Q3 369 47.6 M $7.09 B
2021 Q2 380 46.6 M $5.69 B
2021 Q1 381 48.3 M $6.53 B
2020 Q4 384 48.5 M $5.62 B
2020 Q3 346 47.1 M $4.50 B
2020 Q2 329 47.2 M $3.74 B
2020 Q1 339 47.3 M $3.33 B
2019 Q4 356 49.0 M $4.22 B
2019 Q3 357 48.3 M $4.19 B
2019 Q2 350 51.7 M $4.06 B
2019 Q1 340 49.1 M $2.92 B
2018 Q4 341 49.7 M $2.57 B
2018 Q3 330 51.3 M $3.50 B
2018 Q2 297 49.5 M $2.89 B
2018 Q1 308 50.2 M $2.45 B
2017 Q4 305 49.0 M $2.36 B
2017 Q3 278 49.5 M $2.29 B
2017 Q2 292 49.8 M $2.28 B
2017 Q1 271 50.3 M $2.06 B
2016 Q4 289 49.8 M $2.15 B
2016 Q3 260 51.0 M $1.80 B
2016 Q2 252 53.8 M $1.65 B
2016 Q1 253 54.4 M $1.62 B
2015 Q4 249 57.4 M $1.49 B
2015 Q3 235 56.8 M $1.38 B
2015 Q2 223 56.1 M $1.44 B
2015 Q1 212 55.0 M $1.33 B
2014 Q4 219 57.9 M $1.55 B
2014 Q3 216 57.7 M $1.44 B
2014 Q2 226 61.1 M $1.68 B
2014 Q1 226 60.1 M $1.77 B