Tetra Tech Inc (TTEK) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

262,731,000Shares Outstanding

244,704,477Shares held by institutions

$7,637,226,727Value of institutional holdings

93.14%Institutional ownership %

-1.98%Shares Changed QoQ

591No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Tetra Tech Inc (NASDAQ:TTEK) is held by 590 institutional investors per 13F filings through December 2025.

Their combined ownership stood at 92.1% of outstanding shares in December 2025, down from 96.2% in September 2025.
They decreased total shares held in Tetra Tech by -2.77% from the prior quarter, while the number of investors in TTEK decreased 5.14% year over year.
Of these 590 holders, 268 added to their stakes in Tetra Tech, 248 trimmed positions, and 74 made no changes.
Altogether, these fund groups held 242.0Mn shares in TTEK by December 2025, down by 6.9Mn shares quarter on quarter, and down 1.83Mn shares year over year.
Pictet Asset Management Holding SA is the top holder of Tetra Tech as of December 31, 2025, with 9.64Mn shares representing 3.67% of outstanding stock.
The biggest buyers of Tetra Tech for the quarter ending December 2025 included SG Americas Securities, LLC (170.7K), LOUISBOURG INVESTMENTS INC. (119.97K), Oak Thistle LLC (117.59K), Vest Financial, LLC (52.89K), Perpetual Ltd (48.35K).
The largest sellers of Tetra Tech for the quarter ending December 2025 were Pictet Asset Management Holding SA (1.56Mn), iA Global Asset Management Inc. (328.17K), Ninety One UK Ltd (71.27K), Robeco Institutional Asset Management B.V. (32.78K), Aaron Wealth Advisors LLC (12.99K).
Per Business Quant data, the top 10 holders of Tetra Tech for the quarter ending December 2025 are Pictet Asset Management Holding SA (9.64Mn), Ninety One UK Ltd (2.73Mn), Robeco Institutional Asset Management B.V. (707.13K), Retirement Systems of Alabama (479.6K), Sarasin & Partners LLP (436.17K), SG Americas Securities, LLC (435.18K), Ninety One North America, Inc. (413.15K), iA Global Asset Management Inc. (389.51K), Perpetual Ltd (372.0K), Renaissance Investment Group LLC (295.02K).

592 Institutional Holders

244,704,477 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
VANGUARD GROUP INC	31 Dec, 2025	25,800,544	-501,178	-1.91%	$865,350,246.00
BlackRock, Inc.	31 Dec, 2025	25,731,629	225,612	0.88%	$863,038,830.00
Pictet Asset Management Holding SA	31 Dec, 2025	11,204,346	-2,984,899	-21.04%	$375,811,134.00
State Street Corp	31 Dec, 2025	9,424,246	-1,868,482	-16.55%	$316,089,211.00
Capital International Investors	31 Dec, 2025	9,016,577	1,936,902	27.36%	$302,415,993.00
Neuberger Berman Group LLC	31 Dec, 2025	8,351,221	-676,477	-7.49%	$280,099,964.00
SANDS CAPITAL MANAGEMENT, LLC	31 Dec, 2025	7,007,004	-172,028	-2.40%	$235,014,914.00
Amundi	31 Dec, 2025	5,095,797	-663,884	-11.53%	$170,897,995.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	5,082,342	52,375	1.04%	$170,495,825.00
FIL Ltd	31 Dec, 2025	4,667,958	381,708	8.91%	$156,563,312.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	3,676,680	83,419	2.32%	$123,321,966.00
NORGES BANK	31 Dec, 2025	3,433,575	3,433,575	0.00%	$115,162,106.00
Impax Asset Management Group plc	31 Dec, 2025	3,208,190	3,208,190	0.00%	$107,602,693.00
Corient Private Wealth LLC	31 Dec, 2025	3,137,314	1,374,897	78.01%	$102,927,358.00
Goldman Sachs Group Inc	31 Dec, 2025	3,108,692	1,173,210	60.62%	$104,265,532.00
ALLIANCEBERNSTEIN L.P.	31 Dec, 2025	3,078,999	-3,502,245	-53.22%	$103,269,626.00
FERNBRIDGE CAPITAL MANAGEMENT LP	31 Dec, 2025	3,066,841	2,051,175	201.95%	$102,861,847.00
LGT Group Foundation	31 Dec, 2025	3,061,289	82,719	2.78%	$103,991,987.00
AQR CAPITAL MANAGEMENT LLC	31 Dec, 2025	2,875,372	2,238,721	351.64%	$96,439,970.00
Ninety One UK Ltd	31 Dec, 2025	2,802,991	-2,937,497	-51.17%	$94,012,302.00

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