TETRA TECH INC

TTEKNASDAQ

$33.33+0.21 (+0.63%)as of Oct 5, 2026

Legend

Insider buy

Insider sell

Congress buy

Congress sell

Hedge Funds
bought vs soldGreener markers show more buyers; redder markers show more sellers.

Company share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size.

Insider buy
Insider sell
Congress buy
Congress sell
Hedge Funds bought vs sold

Share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size. Greener fund markers mean more buyers.

Insider Buy
Insider Sell
Congress Buy
Congress Sell
Hedge funds bought vs sold
BuybackNo changeNet dilution

TETRA TECH INC price and activity chart data

Showing the 1Y range: Oct 6, 2025 to Oct 5, 2026. Price (-1.6%). 0 insider or congressional trades plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
Date	Category	Person	Role	Action	Amount	Change in holding

Largest institutional holders

13F · Q2 2026

Fund	% of company held	Value	% of portfolio	Quarterly activity
BlackRock, Inc.	11.20%	$828M	0.01%	Not reported
Vanguard Portfolio Management LLC	4.87%	$360M	0.02%	Not reported
Vanguard Capital Management LLC	4.58%	$339M	0.01%	Not reported
Capital International Investors	4.55%	$337M	0.07%	Add 2.34%
State Street Corp	3.81%	$282M	0.01%	Not reported
FMR LLC	3.42%	$253M	0.01%	Not reported
Geode Capital Management, LLC	2.67%	$197M	0.01%	Not reported
FIL Ltd	2.14%	$158M	0.11%	Add 13.22%
Amundi	1.99%	$147M	0.04%	Not reported
Fuller & Thaler Asset Management, Inc.	1.92%	$142M	0.39%	Not reported
Pictet Asset Management Holding SA	1.86%	$137M	0.13%	Reduce 50.65%
Wellington Management Group LLP	1.83%	$135M	0.02%	Reduce 2.71%
Dimensional Fund Advisors LP	1.74%	$128M	0.02%	Not reported
Neuberger Berman Group LLC	1.72%	$127M	0.08%	Not reported
Arrowstreet Capital, Limited Partnership	1.72%	$127M	0.06%	Not reported
Invesco Ltd.	1.61%	$119M	0.01%	Not reported
AQR Capital Management LLC	1.61%	$117M	0.04%	Not reported
Impax Asset Management Group plc	1.54%	$114M	0.74%	Add 2.65%
LGT Group Foundation	1.46%	$108M	1.22%	Add 18.45%
Norges Bank	1.26%	$93.3M	0.01%	Not reported
Robeco Schweiz AG	1.21%	$89.5M	1.44%	Add 35.50%
M&G PLC	1.08%	$80.5M	0.40%	Add 19.75%
Ameriprise Financial Inc	1.07%	$78.9M	0.02%	Not reported
Goldman Sachs Group Inc	1.03%	$76.5M	0.01%	Not reported
First Trust Advisors LP	1.00%	$74M	0.04%	Add 4.75%
Van Berkom & Associates Inc.	0.96%	$71.3M	2.30%	Reduce 45.98%
Energy Income Partners, LLC	0.93%	$68.5M	1.08%	New Not reported
Ninety One UK Ltd	0.92%	$68.3M	0.15%	Reduce 13.41%
Charles Schwab Investment Management Inc	0.89%	$66.1M	0.01%	Not reported
Northern Trust Corp	0.88%	$64.9M	0.01%	Not reported
Bank of New York Mellon Corp	0.82%	$60.7M	0.01%	Not reported
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	0.81%	$60.1M	0.07%	Not reported
Bank of America Corp	0.77%	$57.1M	0.00%	Not reported
Morgan Stanley	0.77%	$56.8M	0.00%	Not reported
PGGM Investments	0.73%	$54.2M	1.33%	Add 49.53%
UBS Group AG	0.73%	$54M	0.01%	Not reported
Aviva PLC	0.72%	$53.2M	0.08%	Reduce 4.37%
Cooke & Bieler LP	0.70%	$51.6M	0.60%	New Not reported
Allianz Asset Management GmbH	0.68%	$52.1M	0.05%	Not reported
Vanguard Fiduciary Trust Co	0.64%	$47.5M	0.01%	Not reported
Deutsche Bank Ag\	0.61%	$45M	0.01%	Not reported
Corient Private Wealth LP	0.61%	$44.9M	0.06%	Not reported
Neumeier Poma Investment Counsel LLC	0.59%	$43.8M	3.00%	Add 16.14%
Managed Asset Portfolios, LLC	0.52%	$38.2M	4.36%	Add 49.03%
Citadel Advisors LLC	0.50%	$37.2M	0.00%	Not reported
JPMorgan Chase & Co	0.44%	$33.1M	0.00%	Not reported
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	0.43%	$32M	0.01%	Not reported
Quantinno Capital Management LP	0.43%	$31.9M	0.04%	Reduce 28.84%
Aberdeen Group plc	0.42%	$30.9M	0.04%	Reduce 24.84%
Capital Research Global Investors	0.40%	$29.5M	0.00%	Not reported

50 of 517 holders

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