Tetra Tech Ownership | Who Owns Tetra Tech?

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Tetra Tech Ownership Summary

Tetra Tech is owned by 94.80% institutional investors, 0.45% insiders, and 4.76% retail investors. Blackrock is the largest institutional shareholder, holding 9.85% of TTEK shares. Pictet Water Segregated Accounts is the top mutual fund, with 8.99% of its assets in Tetra Tech shares.

TTEK Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Tetra Tech	94.80%	0.45%	4.76%
Sector	Industrials Stocks	64.07%	12.69%	23.24%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Blackrock	5.27M	9.85%	$1.08B
Vanguard group	25.91M	9.69%	$1.03B
Blackrock funding, inc. /de	25.70M	9.67%	$924.01M
Pictet asset management sa	13.85M	5.21%	$497.98M
State street	9.26M	3.46%	$368.84M
Neuberger berman group	8.71M	3.26%	$347.00M
Alliancebernstein	7.85M	2.94%	$312.78M
Amundi	6.76M	2.55%	$214.01M
Sands capital management	5.20M	1.96%	$187.00M
Geode capital management	4.73M	1.77%	$188.49M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Value management	907.33K	5.76%	$32.63M
Managed asset portfolios	855.57K	4.00%	$30.77M
Bornite capital management lp	1.03M	3.70%	$36.97M
Crown advisors management	125.00K	3.58%	$4.50M
Winslow asset management	447.86K	3.25%	$16.11M
Neumeier poma investment counsel	887.50K	2.97%	$31.91M
Renaissance investment group	333.51K	2.80%	$13.29M
Robeco schweiz	2.80M	2.32%	$100.61M
Bowen hanes	2.03M	2.16%	$80.71M
S&t bank/pa	155.60K	1.98%	$6.20M

Top Buyers

Holder	Shares	% Assets	Change
Norges bank	3.05M	0.02%	3.05M
Capital research global investors	1.79M	0.01%	1.79M
M&g	2.42M	0.48%	1.45M
Freestone grove partners lp	1.13M	0.31%	1.13M
Sands capital management	5.20M	0.54%	1.09M

Top Sellers

Holder	Shares	% Assets	Change
Sarasin & partners llp	-	-	-4.95M
Alliancebernstein	7.85M	0.11%	-3.49M
Artisan partners limited partnership	-	-	-2.78M
Bain capital public equity management ii	-	-	-2.41M
Driehaus capital management	-	-	-1.60M

New Positions

Holder	Shares	% Assets	Change	Value
Norges bank	3.05M	0.02%	3.05M	$121.39M
Capital research global investors	1.79M	0.01%	1.79M	$64.26M
Freestone grove partners lp	1.13M	0.31%	1.13M	$40.70M
Bornite capital management lp	1.03M	3.70%	1.03M	$36.97M
Fernbridge capital management lp	943.42K	1.62%	943.42K	$33.93M

Sold Out

Holder	Change
Activest wealth management	-1.00
First command advisory services	-4.00
Hhm wealth advisors	-5.00
Tfc financial management	-5.00
Horizon investments	-6.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Jun 30, 2025	587	1.73%	251,766,635	3.61%	94	1.13%	308	2.67%	199	3.11%
Mar 31, 2025	570	-11.08%	242,885,572	2.15%	91	1.16%	295	-4.22%	192	-15.42%
Dec 31, 2024	495	-23.61%	193,712,356	-17.85%	72	0.93%	224	-63.93%	183	1120.00%
Sep 30, 2024	639	5.10%	235,314,279	384.75%	88	1.07%	614	98.71%	13	-93.43%
Jun 30, 2024	604	17.51%	48,534,805	4.80%	90	1.21%	305	36.16%	197	3.14%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Pictet Water Segregated Accounts	962.92K	8.99%	962.92K
iShares Core S&P Mid-Cap ETF	8.59M	3.27%	-15.46K
Vanguard Total Stock Mkt Idx Inv	8.30M	3.16%	-195.16K
Vanguard US Total Market Shares ETF	8.45M	3.15%	-33.76M
Fidelity Sust Water & Waste A Acc EUR	307.14K	2.87%	11.47K
Vanguard Small Cap Index	6.40M	2.43%	-43.12K
State St S&P Midcap® Indx SL Cl II	246.10K	2.30%	-600.00
Vontobel Global Envir Change I EUR	235.39K	2.20%	-
Pictet-Water I EUR	5.68M	2.16%	-491.12K
AB Small Cap Growth A	218.89K	2.04%	690.00

Recent Insider Transactions

Date	Name	Role	Activity	Value
Aug 14, 2025	Birkenbeuel Gary	-	Sell	$86.05K
Feb 04, 2025	Volpi Kirsten M	-	Sell	$140.74K
Feb 04, 2025	Volpi Kirsten M	-	Sell	$57.50K
Feb 04, 2025	Volpi Kirsten M	-	Sell	$149.08K
Sep 11, 2024	BURDICK STEVEN M	EVP, CFO	Sell	$1.72M

Insider Transactions Trends

Date	Buy	Sell
2031 Q4	-	1
2024 Q3	-	6
2024 Q2	-	1
2024 Q1	-	5
2023 Q4	-	10

TTEK Ownership FAQ

Who owns the most shares of Tetra Tech?

Tetra Tech’s largest shareholders are Blackrock (5.27M shares, 9.85%), Vanguard group (25.91M shares, 9.69%), and Blackrock funding, inc. /de (25.7M shares, 9.67%). Together, they hold 29.21% of Tetra Tech’s total shares outstanding.

Does Blackrock own Tetra Tech?

Yes, BlackRock owns 9.85% of Tetra Tech, totaling 5.27M shares as of Jun 2024. This represents 0.02% of BlackRock's total assets, with a market value of 1.08B$. In the last quarter, BlackRock decreased its holdings by -56.58K shares, a -1.06% change.

Who is Tetra Tech’s biggest shareholder by percentage of total assets invested?

Value management is Tetra Tech’s biggest shareholder by percentage of total assets invested, with 5.76% of its assets in 907.32K Tetra Tech shares, valued at 32.63M$.

Who is the top mutual fund holder of Tetra Tech shares?

Pictet Water Segregated Accounts is the top mutual fund holder of Tetra Tech shares, with 8.99% of its total shares outstanding invested in 962.92K Tetra Tech shares.

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