Tetra Tech Ownership | Who Owns Tetra Tech?

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Tetra Tech Ownership Summary

Tetra Tech is owned by 97.99% institutional investors, 0.49% insiders, and 1.52% retail investors. Blackrock funding, inc. /de is the largest institutional shareholder, holding 11.02% 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	97.99%	0.49%	1.52%
Sector	Industrials Stocks	67.86%	16.45%	15.69%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Blackrock funding, inc. /de	28.68M	11.02%	$828.43M
Vanguard group	25.80M	9.89%	$865.35M
Blackrock	5.27M	9.85%	$1.08B
Vanguard capital management	11.73M	4.51%	$338.76M
Capital investors	11.65M	4.48%	$336.60M
State street	9.76M	3.75%	$282.01M
Fmr	8.77M	3.37%	$253.33M
Geode capital management	6.83M	2.63%	$197.44M
Fil	5.47M	2.10%	$158.08M
Amundi	5.10M	1.96%	$147.26M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Value management	907.33K	4.38%	$26.21M
Managed asset portfolios	1.32M	4.36%	$38.18M
Alpenglobal capital	103.67K	3.67%	$5.73M
Neumeier poma investment counsel	1.51M	3.00%	$43.75M
Osprey private wealth	363.30K	2.71%	$10.50M
One8zero8	440.67K	2.52%	$12.73M
Van berkom & associates	2.47M	2.30%	$71.34M
Winslow asset management	437.31K	2.20%	$12.63M
Crown advisors management	125.00K	1.98%	$3.61M
Renaissance investment group	293.84K	1.67%	$8.49M

Top Buyers

Holder	Shares	% Assets	Change
Fmr	8.77M	0.01%	8.44M
Arrowstreet capital, limited partnership	4.39M	0.06%	3.85M
Norges bank	3.23M	0.01%	3.23M
Aqr capital management	4.11M	0.04%	2.60M
Energy income partners	2.37M	1.08%	2.37M

Top Sellers

Holder	Shares	% Assets	Change
Sands capital management	-	-	-6.66M
Pictet asset management sa	4.76M	0.13%	-4.89M
Fernbridge capital management lp	-	-	-3.40M
Neuberger berman group	4.41M	0.08%	-2.86M
Artisan partners limited partnership	-	-	-2.78M

New Positions

Holder	Shares	% Assets	Change	Value
Norges bank	3.23M	0.01%	3.23M	$93.34M
Energy income partners	2.37M	1.08%	2.37M	$68.51M
Sixth street partners management company	2.29M	0.01%	2.29M	$66.05M
Cooke & bieler lp	1.79M	0.60%	1.79M	$51.58M
Foresight group ltd liability partnership	269.58K	1.38%	269.58K	$7.68M

Sold Out

Holder	Change
Clear street markets	-1.00
Curio wealth	-1.00
Advisornet financial	-2.00
Optiver b.v.	-2.00
American capital advisory	-3.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Jun 30, 2026	559	-7.45%	254,915,563	4.69%	97	1.12%	262	-4.38%	209	-9.13%
Mar 31, 2026	408	-33.87%	153,845,034	-36.36%	58	0.69%	181	-34.66%	153	-39.76%
Dec 31, 2025	489	-20.36%	192,202,802	-22.15%	73	0.85%	208	-31.58%	206	1.48%
Sep 30, 2025	586	-2.66%	229,832,335	-8.07%	86	0.98%	287	-8.01%	198	-3.41%
Jun 30, 2025	587	1.73%	251,766,635	3.61%	94	1.13%	308	2.67%	199	3.11%

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	8.91M	3.48%	274.00
Vanguard MStar Total Stk Mkt Idx Invest	8.28M	3.23%	25.22K
Vanguard Total Stock Mkt Idx Inv	8.25M	3.18%	-55.75K
Vanguard Morn Total Stk Mkt Idx Investor	8.25M	3.18%	-55.75K
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
Pictet-Water I EUR	6.82M	2.66%	-65.68K
Vanguard Small Cap Index	5.97M	2.33%	13.60K
Sands Capital Global Growth Equity	5.97M	2.30%	-263.64K

Recent Insider Transactions

Date	Name	Role	Activity	Value
May 15, 2026	Feeler Jeffrey R	-	Buy	$50.18K
Feb 04, 2026	CARTER BRIAN N	SVP, Corporate Controller	Sell	$401.41K
Aug 14, 2025	Birkenbeuel Gary	-	Sell	$86.05K
Feb 04, 2025	Volpi Kirsten M	-	Sell	$57.50K
Feb 04, 2025	Volpi Kirsten M	-	Sell	$140.74K

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 funding, inc. /de (28.68M shares, 11.02%), Vanguard group (25.8M shares, 9.89%), and Blackrock (5.27M shares, 9.85%). Together, they hold 30.76% 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 4.38% of its assets in 907.32K Tetra Tech shares, valued at 26.21M$.

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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