TETRA TECH INC - COMMON STOCK (TTEK)

Historical Holders from Q1 2014 to Q4 2025

Type / Class
Equity / COMMON STOCK
Symbol
TTEK on Nasdaq
Shares outstanding
265,433,531
Price per share
$33.54
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares as of 30 Sep 2025
246,158,956
Holdings value
$8,217,186,858
% of all portfolios
0.01%
Share change
-2,932,223
Value change
-$117,095,371
Average buys %
+0%
Average sells %
-0%
Number of holders
588
Price from insider filings
$34.74
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of TETRA TECH INC - COMMON STOCK (TTEK) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
VANGUARD GROUP INC 10% $856,352,542 27,185,795 The Vanguard Group 31 Mar 2025
BlackRock, Inc. 9.7% $819,843,350 26,026,773 BlackRock, Inc. 31 Dec 2024
PICTET ASSET MANAGEMENT SA 4.9% -8% $434,148,391 -$48,471,298 13,006,243 -10% PICTET ASSET MANAGEMENT SA 16 Oct 2025
As of 30 Sep 2025, TETRA TECH INC - COMMON STOCK (TTEK) has 588 institutional shareholders filing 13F forms. They hold 246,158,956 shares of 265,433,531 outstanding shares (93%) .

Top 25 institutional shareholders own 60% of the company.

Filer Ownership Nb Shares Share Change % Portfolio % Holdings Value
VANGUARD GROUP INC 9.9% 26,301,722 -1.1% 0.01% $877,951,480
BlackRock, Inc. 9.6% 25,506,017 -0.74% 0.02% $851,390,862
Pictet Asset Management Holding SA 5.3% 14,189,245 +2.5% 0.46% $473,641,448
STATE STREET CORP 4.3% 11,292,728 -5.4% 0.01% $376,951,261
NEUBERGER BERMAN GROUP LLC 3.4% 9,027,698 +1.4% 0.22% $301,344,548
SANDS CAPITAL MANAGEMENT, LLC 2.7% 7,179,032 +38% 0.66% $239,636,088
Capital International Investors 2.7% 7,079,675 +249% 0.04% $236,319,552
ALLIANCEBERNSTEIN L.P. 2.5% 6,581,244 +12% 0.07% $219,681,925
Amundi 2.2% 5,759,681 -15% 0.06% $193,251,053
GEODE CAPITAL MANAGEMENT, LLC 1.9% 5,029,967 +1.4% 0.01% $167,930,297
FIL Ltd 1.6% 4,286,250 -7.9% 0.11% $143,075,025
DIMENSIONAL FUND ADVISORS LP 1.4% 3,593,261 +1.4% 0.03% $119,946,579
BANK OF AMERICA CORP /DE/ 1.1% 3,012,051 +1.4% 0.01% $100,542,270
LGT Group Foundation 1.1% 2,978,570 +6.3% 1.1% $98,858,738
Ninety One UK Ltd 1.1% 2,870,244 +2.8% 0.21% $95,808,748
Bank of New York Mellon Corp 0.99% 2,636,199 +5.4% 0.02% $87,996,319
NORTHERN TRUST CORP 0.96% 2,552,207 -1.7% 0.01% $85,192,670
AMERIPRISE FINANCIAL INC 0.96% 2,536,018 +5.8% 0.02% $84,652,266
M&G PLC 0.91% 2,409,574 -0.29% 0.43% $79,515,942
MORGAN STANLEY 0.9% 2,381,395 -12% 0% $79,491,006
Robeco Schweiz AG 0.9% 2,379,020 -15% 1.8% $79,411,688
Invesco Ltd. 0.87% 2,310,220 -8.7% 0.01% $77,115,156
CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.8% 2,131,414 +0.96% 0.01% $71,146,599
Van Berkom & Associates Inc. 0.78% 2,065,070 +0.11% 2% $68,932,000
FIRST TRUST ADVISORS LP 0.75% 1,981,493 +52% 0.05% $66,142,181

Institutional Holders of TETRA TECH INC - COMMON STOCK (TTEK) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price Investors
2025 Q4 949,178 $31,986,618 +$811,441 $33.54 15
2025 Q3 246,158,956 $8,217,186,858 -$117,095,371 $33.38 588
2025 Q2 249,240,102 $8,933,265,268 +$295,103,214 $35.96 581
2025 Q1 242,378,721 $7,091,066,618 +$24,988,481 $29.25 559
2024 Q4 237,165,776 $9,448,584,728 -$161,325,342 $39.84 631
2024 Q3 237,811,790 $11,214,606,811 +$7,851,111,419 $47.16 634
2024 Q2 48,309,758 $9,887,096,926 +$231,737,536 $204.48 596
2024 Q1 46,636,359 $8,615,755,036 -$71,555,028 $184.71 506
2023 Q4 47,171,610 $7,872,855,202 -$1,940,454 $166.93 505
2023 Q3 46,633,786 $7,092,827,784 +$17,997,008 $152.03 469
2023 Q2 46,872,573 $7,673,008,327 +$84,321,291 $163.74 448
2023 Q1 46,936,638 $6,886,742,404 +$74,756,338 $146.91 440
2022 Q4 46,471,935 $6,747,450,321 -$32,822,370 $145.19 464
2022 Q3 45,964,934 $5,908,292,627 -$136,005,038 $128.53 402
2022 Q2 46,191,800 $6,304,563,603 -$99,457,764 $136.55 401
2022 Q1 47,686,242 $7,867,067,308 +$152,248,597 $164.94 392
2021 Q4 46,703,352 $7,926,326,514 -$124,055,048 $169.80 389
2021 Q3 47,372,911 $7,073,314,579 +$120,416,598 $149.34 349
2021 Q2 46,548,461 $5,680,116,687 -$73,767,573 $122.04 359
2021 Q1 47,840,078 $6,473,266,661 +$25,583,161 $135.72 357
2020 Q4 46,936,862 $5,437,819,456 +$46,333,943 $115.78 357
2020 Q3 46,541,184 $4,444,481,848 +$27,204,709 $95.50 321
2020 Q2 46,268,189 $3,660,977,974 +$16,620,189 $79.12 302
2020 Q1 46,287,273 $3,269,443,610 -$66,269,236 $70.62 311
2019 Q4 47,204,686 $4,067,140,464 -$34,195,490 $86.16 333
2019 Q3 47,520,776 $4,122,618,874 -$126,512,764 $86.76 339
2019 Q2 49,058,239 $3,853,732,496 +$86,038,275 $78.55 324
2019 Q1 48,779,709 $2,906,748,046 +$7,642,300 $59.59 316
2018 Q4 48,757,123 $2,523,684,706 -$2,965,100 $51.77 321
2018 Q3 48,557,498 $3,316,177,651 -$19,127,556 $68.30 307
2018 Q2 49,155,288 $2,875,242,341 -$2,506,360 $58.50 282
2018 Q1 49,331,849 $2,414,404,354 +$19,259,757 $48.95 290
2017 Q4 48,964,262 $2,357,802,573 -$29,084,210 $48.15 295
2017 Q3 49,264,231 $2,292,938,244 -$9,747,934 $46.55 267
2017 Q2 49,753,991 $2,276,009,094 -$9,058,524 $45.75 283
2017 Q1 49,951,430 $2,040,466,123 +$318,113,059 $40.85 258
2016 Q4 49,470,648 $2,134,641,248 -$58,822,212 $43.15 273
2016 Q3 50,925,231 $1,803,134,764 -$46,659,929 $35.47 249
2016 Q2 53,073,871 $1,631,372,167 -$13,861,572 $30.74 240
2016 Q1 54,422,750 $1,621,118,783 -$18,381,012 $29.82 238
2015 Q4 55,234,876 $1,437,410,010 +$4,811,478 $26.02 235
2015 Q3 55,733,215 $1,354,847,896 -$9,002,086 $24.31 224
2015 Q2 55,985,682 $1,436,516,763 +$27,010,838 $25.64 214
2015 Q1 55,002,617 $1,325,797,951 -$11,288,458 $24.02 206
2014 Q4 55,169,664 $1,472,346,678 -$42,646,740 $26.70 209
2014 Q3 57,592,584 $1,438,636,688 -$58,990,674 $24.98 205
2014 Q2 59,682,931 $1,641,143,379 -$14,524,948 $27.50 213
2014 Q1 60,061,502 $1,773,742,490 +$6,032,820 $29.59 217