TETRA TECH INC (TTEK) — Institutional Holders, Q2 2026

555 institutional investment managers reported a TTEK position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $7.3B. Every filer is listed below, ranked by position value, 100 per page; this page shows ranks 1 to 100. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.

← TTEK stock profile

TTEK in Q2 2026: what funds did

Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.

New positions

Added to

207

Trimmed

214

Sold out

Biggest buyers

FMRAdded · +8,440,359 sh+$243.8M
ARROWSTREET CAPITAL, LIMITED PARTNERSHIPAdded · +3,850,262 sh+$111.2M
AQR CAPITAL MANAGEMENTAdded · +2,597,141 sh+$75.0M
Energy Income PartnersNew · +2,371,465 sh+$68.5M
BlackRockAdded · +1,884,870 sh+$54.5M

Biggest sellers

SANDS CAPITAL MANAGEMENTSold out · -6,658,823 sh-$192.4M
Pictet Asset Management Holding SATrimmed · -4,885,502 sh-$141.1M
FERNBRIDGE CAPITAL MANAGEMENTSold out · -3,400,775 sh-$98.2M
Neuberger Berman GroupTrimmed · -2,860,670 sh-$82.6M
ALLIANCEBERNSTEIN L.P.Trimmed · -2,472,104 sh-$71.4M

TTEK 13F holders ranked 1–100 of 555

Institutional investors reporting a position in TETRA TECH INC on SEC Form 13F-HR for Q2 2026, ranked by reported value.
#	Institution	Shares	Value	% of portfolio	QoQShares vs Q1 2026
1	BlackRock#1 · 28,675,276 sh	28,675,276	$828.4M	0.01%	+7.0%
2	VANGUARD PORTFOLIO MANAGEMENT#2 · 12,467,970 sh	12,467,970	$360.2M	0.02%	-1.4%
3	VANGUARD CAPITAL MANAGEMENT#3 · 11,725,738 sh	11,725,738	$338.8M	<0.01%	+0.1%
4	Capital International Investors#4 · 11,651,238 sh	11,651,238	$336.6M	0.07%	+2.3%
5	STATE STREET#5 · 9,761,640 sh	9,761,640	$282.0M	<0.01%	+1.3%
6	FMR#6 · 8,768,611 sh	8,768,611	$253.3M	0.01%	+2571.3%
7	GEODE CAPITAL MANAGEMENT#7 · 6,833,071 sh	6,833,071	$197.4M	0.01%	+31.0%
8	FIL Ltd#8 · 5,471,691 sh	5,471,691	$158.1M	0.11%	+13.2%
9	Amundi#9 · 5,098,519 sh	5,098,519	$147.3M	0.04%	+7.4%
10	FULLER & THALER ASSET MANAGEMENT#10 · 4,921,268 sh	4,921,268	$142.2M	0.39%	+48.5%
11	Pictet Asset Management Holding SA#11 · 4,759,290 sh	4,759,290	$137.5M	0.13%	-50.7%
12	WELLINGTON MANAGEMENT GROUP LLP#12 · 4,674,089 sh	4,674,089	$135.0M	0.02%	-2.7%
13	DIMENSIONAL FUND ADVISORS#13 · 4,446,215 sh	4,446,215	$128.5M	0.02%	+17.3%
14	Neuberger Berman Group#14 · 4,408,987 sh	4,408,987	$127.4M	0.08%	-39.4%
15	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP#15 · 4,393,728 sh	4,393,728	$126.9M	0.06%	+708.5%
16	Invesco Ltd.#16 · 4,116,893 sh	4,116,893	$118.9M	<0.01%	+40.3%
17	AQR CAPITAL MANAGEMENT#17 · 4,111,603 sh	4,111,603	$117.1M	0.04%	+171.5%
18	Impax Asset Management Group plc#18 · 3,931,741 sh	3,931,741	$113.6M	0.74%	+2.7%
19	LGT Group Foundation#19 · 3,745,171 sh	3,745,171	$108.2M	1.22%	+18.5%
20	NORGES BANK#20 · 3,230,988 sh	3,230,988	$93.3M	<0.01%	—
21	Robeco Schweiz AG#21 · 3,099,250 sh	3,099,250	$89.5M	—	+35.5%
22	M&G Plc#22 · 2,776,344 sh	2,776,344	$80.5M	0.40%	+19.7%
23	AMERIPRISE FINANCIAL#23 · 2,729,762 sh	2,729,762	$78.9M	0.02%	+35.1%
24	GOLDMAN SACHS GROUP#24 · 2,647,910 sh	2,647,910	$76.5M	<0.01%	+37.4%
25	FIRST ADVISORS#25 · 2,561,572 sh	2,561,572	$74.0M	0.04%	+4.7%
26	Van Berkom & Associates#26 · 2,469,392 sh	2,469,392	$71.3M	2.30%	+8.0%
27	Energy Income Partners#27 · 2,371,465 sh	2,371,465	$68.5M	1.08%	New
28	Ninety One UK Ltd#28 · 2,365,261 sh	2,365,261	$68.3M	—	-13.4%
29	CHARLES SCHWAB INVESTMENT MANAGEMENT#29 · 2,286,390 sh	2,286,390	$66.1M	<0.01%	+2.2%
30	NORTHERN#30 · 2,245,716 sh	2,245,716	$64.9M	<0.01%	-3.2%
31	Bank of New York Mellon#31 · 2,101,030 sh	2,101,030	$60.7M	0.01%	-10.5%
32	MIRAE ASSET GLOBAL ETFS Ltd.#32 · 2,081,631 sh	2,081,631	$60.1M	0.07%	+8.5%
33	BANK OF AMERICA#33 · 1,977,679 sh	1,977,679	$57.1M	<0.01%	+44.2%
34	MORGAN STANLEY#34 · 1,966,257 sh	1,966,257	$56.8M	<0.01%	-12.2%
35	PGGM Investments#35 · 1,874,895 sh	1,874,895	$54.2M	1.33%	+49.5%
36	UBS Group AG#36 · 1,867,963 sh	1,867,963	$54.0M	<0.01%	+188.9%
37	AVIVA PLC#37 · 1,842,517 sh	1,842,517	$53.2M	0.08%	-4.4%
38	Allianz Asset Management GmbH#38 · 1,728,565 sh	1,728,565	$52.1M	0.05%	-0.1%
39	COOKE & BIELER#39 · 1,785,403 sh	1,785,403	$51.6M	—	New
40	VANGUARD FIDUCIARY#40 · 1,643,323 sh	1,643,323	$47.5M	0.01%	+0.9%
41	DEUTSCHE BANK AG\#41 · 1,558,916 sh	1,558,916	$45.0M	0.01%	-10.1%
42	Corient Private Wealth#42 · 1,554,196 sh	1,554,196	$44.9M	0.06%	+11.8%
43	NEUMEIER POMA INVESTMENT COUNSEL#43 · 1,514,378 sh	1,514,378	$43.8M	3.00%	+16.1%
44	MANAGED ASSET PORTFOLIOS#44 · 1,321,714 sh	1,321,714	$38.2M	4.36%	+49.0%
45	CITADEL ADVISORS#45 · 1,287,534 sh	1,287,534	$37.2M	<0.01%	-26.0%
46	JPMORGAN CHASE#46 · 1,136,843 sh	1,136,843	$33.1M	<0.01%	+24.3%
47	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME#47 · 1,106,392 sh	1,106,392	$32.0M	<0.01%	-3.6%
48	Quantinno Capital Management#48 · 1,103,758 sh	1,103,758	$31.9M	0.04%	-28.8%
49	abrdn plc#49 · 1,068,968 sh	1,068,968	$30.9M	0.04%	-24.8%
50	Capital Research Global Investors#50 · 1,020,653 sh	1,020,653	$29.5M	<0.01%	-7.4%
51	Point72 Asset Management, L.P.#51 · 1,011,149 sh	1,011,149	$29.2M	0.03%	+86.5%
52	Nuveen#52 · 967,569 sh	967,569	$28.0M	<0.01%	+3.3%
53	NOMURA ASSET MANAGEMENT LTD#53 · 954,294 sh	954,294	$27.6M	0.06%	+8.4%
54	Legal & General Group Plc#54 · 945,909 sh	945,909	$27.3M	<0.01%	+3.5%
55	L1 Capital International Pty Ltd#55 · 925,433 sh	925,433	$26.7M	1.57%	-3.2%
56	Pacer Advisors#56 · 910,227 sh	910,227	$26.3M	0.07%	+1163.4%
57	VALUE MANAGEMENT#57 · 907,325 sh	907,325	$26.2M	4.38%	0.0%
58	ROYAL BANK OF CANADA#58 · 887,837 sh	887,837	$25.6M	<0.01%	+5.1%
59	WELLS FARGO & COMPANY#59 · 841,158 sh	841,158	$24.3M	<0.01%	-4.5%
60	BNP PARIBAS FINANCIAL MARKETS#60 · 833,747 sh	833,747	$24.1M	<0.01%	+19.9%
61	PRICE T ROWE ASSOCIATES#61 · 767,634 sh	767,634	$22.2M	<0.01%	+31.3%
62	Robeco Institutional Asset Management B.V.#62 · 743,831 sh	743,831	$21.5M	—	+5.2%
63	Zurcher Kantonalbank (Zurich Cantonalbank)#63 · 712,884 sh	712,884	$20.6M	0.04%	+18.3%
64	Gotham Asset Management#64 · 708,634 sh	708,634	$20.5M	0.05%	+263.4%
65	RHUMBLINE ADVISERS#65 · 693,805 sh	693,805	$20.0M	0.02%	-2.8%
66	MIROVA#66 · 669,611 sh	669,611	$19.3M	0.71%	+9.5%
67	TRILLIUM ASSET MANAGEMENT#67 · 647,910 sh	647,910	$18.7M	0.58%	+7.9%
68	Fisher Asset Management#68 · 647,795 sh	647,795	$18.7M	<0.01%	+5.7%
69	Squarepoint Ops#69 · 641,945 sh	641,945	$18.5M	0.02%	+53.8%
70	BANK OF NOVA SCOTIA#70 · 629,088 sh	629,088	$18.2M	0.03%	+6.7%
71	HSBC PLC#71 · 628,625 sh	628,625	$18.0M	<0.01%	+45.9%
72	Bridgewater Associates#72 · 608,211 sh	608,211	$17.6M	0.07%	+184.3%
73	PRINCIPAL FINANCIAL GROUP#73 · 589,240 sh	589,240	$17.0M	<0.01%	+1.0%
74	SCHRODER INVESTMENT MANAGEMENT GROUP#74 · 578,614 sh	578,614	$16.7M	0.01%	-33.1%
75	KING LUTHER CAPITAL MANAGEMENT#75 · 569,160 sh	569,160	$16.4M	0.07%	-68.1%
76	CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM#76 · 528,661 sh	528,661	$15.3M	<0.01%	+6.1%
77	HRT FINANCIAL#77 · 502,154 sh	502,154	$14.5M	0.04%	New
78	Swiss National Bank#78 · 497,200 sh	497,200	$14.4M	<0.01%	+1.3%
79	Ninety One North America#79 · 485,767 sh	485,767	$14.0M	—	+17.6%
80	SYSTEMATIC FINANCIAL MANAGEMENT#80 · 481,101 sh	481,101	$13.9M	0.28%	+67.8%
81	Sarasin & Partners LLP#81 · 472,902 sh	472,902	$13.7M	—	+8.4%
82	BALYASNY ASSET MANAGEMENT L.P.#82 · 456,640 sh	456,640	$13.2M	0.02%	+5.1%
83	SG Americas Securities#83 · 451,073 sh	451,073	$13.0M	<0.01%	+3.7%
84	Handelsbanken Fonder AB#84 · 449,922 sh	449,922	$13.0M	0.04%	+7.4%
85	BARCLAYS PLC#85 · 440,903 sh	440,903	$12.7M	<0.01%	-0.7%
86	one8zero8#86 · 440,672 sh	440,672	$12.7M	2.52%	-2.4%
87	WINSLOW ASSET MANAGEMENT#87 · 437,305 sh	437,305	$12.6M	2.20%	+1.1%
88	Retirement Systems of Alabama#88 · 428,289 sh	428,289	$12.4M	0.04%	-10.7%
89	Perpetual Ltd#89 · 426,947 sh	426,947	$12.3M	—	+14.8%
90	VOLORIDGE INVESTMENT MANAGEMENT#90 · 419,712 sh	419,712	$12.1M	0.05%	+18.0%
91	ALGERT GLOBAL#91 · 415,099 sh	415,099	$12.0M	0.14%	+105.4%
92	NICOLA WEALTH MANAGEMENT LTD.#92 · 411,000 sh	411,000	$11.9M	1.37%	0.0%
93	Premier Fund Managers Ltd#93 · 408,394 sh	408,394	$11.8M	1.07%	-49.3%
94	MACKENZIE FINANCIAL#94 · 401,964 sh	401,964	$11.6M	0.01%	+208.5%
95	ENVESTNET ASSET MANAGEMENT#95 · 373,426 sh	373,426	$10.8M	<0.01%	-11.1%
96	Osprey Private Wealth#96 · 363,295 sh	363,295	$10.5M	2.71%	0.0%
97	VAN ECK ASSOCIATES#97 · 352,058 sh	352,058	$10.2M	<0.01%	+1.5%
98	ALLIANCEBERNSTEIN L.P.#98 · 335,361 sh	335,361	$10.1M	<0.01%	-88.1%
99	INTECH INVESTMENT MANAGEMENT#99 · 334,455 sh	334,455	$9.7M	0.09%	+8.1%
100	CANADA PENSION PLAN INVESTMENT BOARD#100 · 319,600 sh	319,600	$9.2M	<0.01%	+99.5%

Funds that sold out of TTEK in Q2 2026 (88)

Held TTEK at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.

Institutions that held TTEK in Q1 2026 and reported no position in Q2 2026.
Institution	Shares sold	Value in Q1 2026
SANDS CAPITAL MANAGEMENT6,658,823 sh	6,658,823	$200.6M
FERNBRIDGE CAPITAL MANAGEMENT3,400,775 sh	3,400,775	$102.4M
CI INVESTMENTS461,855 sh	461,855	$13.9M
RENAISSANCE TECHNOLOGIES453,600 sh	453,600	$13.7M
iA Global Asset Management389,511 sh	389,511	$11.7M
SEB Asset Management AB374,020 sh	374,020	$11.3M
Connor, Clark & Lunn Investment Management Ltd.349,077 sh	349,077	$10.5M
CAISSE DE DEPOT ET PLACEMENT DU QUEBEC181,185 sh	181,185	$5.5M
Night Squared174,738 sh	174,738	$5.3M
Edgestream Partners, L.P.121,937 sh	121,937	$3.7M
Oak Thistle117,586 sh	117,586	$3.5M
AGF MANAGEMENT LTD100,841 sh	100,841	$3.0M
KINGDON CAPITAL MANAGEMENT, L.L.C.100,000 sh	100,000	$3.0M
Lombard Odier Asset Management (Europe) Ltd86,962 sh	86,962	$2.6M
ALPINE WOODS CAPITAL INVESTORS84,047 sh	84,047	$2.5M
PDT Partners75,758 sh	75,758	$2.3M
Schonfeld Strategic Advisors63,778 sh	63,778	$1.9M
Sciencast Management55,578 sh	55,578	$1.7M
ACADIAN ASSET MANAGEMENT54,966 sh	54,966	$1.7M
Northwest & Ethical Investments L.P.44,382 sh	44,382	$1.3M
Aquatic Capital Management42,307 sh	42,307	$1.3M
TWINBEECH CAPITAL32,500 sh	32,500	$978.9K
Quantbot Technologies29,413 sh	29,413	$885.9K
EQUITABLE27,886 sh	27,886	$839.9K
Inscription Capital27,426 sh	27,426	$826.1K
QUADRANT CAPITAL GROUP49,222 sh	49,222	$790.3K
WINTON GROUP Ltd24,900 sh	24,900	$750.0K
AXQ CAPITAL24,442 sh	24,442	$736.2K
GUGGENHEIM CAPITAL24,206 sh	24,206	$729.1K
TWO SIGMA SECURITIES21,589 sh	21,589	$650.3K
Lighthouse Investment Partners16,994 sh	16,994	$511.9K
Caitong International Asset Management , Ltd16,255 sh	16,255	$489.6K
TRIGLAV SKLADI, D.O.O.15,364 sh	15,364	$462.8K
DRW Securities14,747 sh	14,747	$444.2K
AdvisorShares Investments13,856 sh	13,856	$417.3K
Virtu Financial13,658 sh	13,658	$411.0K
IEQ CAPITAL13,566 sh	13,566	$408.6K
Optas12,803 sh	12,803	$385.6K
NOMURA11,647 sh	11,647	$350.8K
Argent11,051 sh	11,051	$332.9K
Point10,961 sh	10,961	$330.1K
OXFORD ASSET MANAGEMENT LLP10,161 sh	10,161	$306.0K
SIMPLEX TRADING10,061 sh	10,061	$303.0K
VARCOV9,938 sh	9,938	$299.3K
CERTUITY9,119 sh	9,119	$274.7K
Blueshift Asset Management9,028 sh	9,028	$271.9K
Diametric Capital9,025 sh	9,025	$271.8K
PRELUDE CAPITAL MANAGEMENT8,951 sh	8,951	$269.6K
Cresset Asset Management8,716 sh	8,716	$262.5K
Sequoia Financial Advisors7,723 sh	7,723	$232.6K
Crestwood Advisors Group7,548 sh	7,548	$227.3K
NOVEM GROUP7,106 sh	7,106	$214.0K
Olympiad Research7,062 sh	7,062	$212.7K
EP Wealth Advisors6,982 sh	6,982	$210.3K
CHOREO6,896 sh	6,896	$207.7K
Sound Income Strategies730 sh	730	$22.4K
Twin Tree Management645 sh	645	$19.4K
Trust Co626 sh	626	$18.9K
Root Financial Partners600 sh	600	$18.1K
Plante Moran Financial Advisors595 sh	595	$17.9K
VEGA INVESTMENT SOLUTIONS574 sh	574	$17.3K
Basecamp Wealth Advisors313 sh	313	$9.4K
Union Bankshares264 sh	264	$8.0K
Western Wealth Management264 sh	264	$8.0K
Kohmann Bosshard Financial Services251 sh	251	$7.6K
BROWN, LISLE/CUMMINGS190 sh	190	$5.7K
Ancora Advisors183 sh	183	$5.5K
CAPITAL & PLANNING170 sh	170	$5.1K
MEEDER ASSET MANAGEMENT140 sh	140	$4.2K
James T. Borello RIA123 sh	123	$3.7K
Whipplewood Advisors90 sh	90	$2.7K
Wealth Enhancement Services85 sh	85	$2.6K
ST GERMAIN D J75 sh	75	$2.3K
HAZLETT, BURT & WATSON66 sh	66	$2.0K
Lummis Asset Management50 sh	50	$1.5K
Bell Investment Advisors40 sh	40	$1.2K
Golden State Equity Partners35 sh	35	$1.1K
Signature Equity Partners25 sh	25	$753.00
Intentional Wealth Strategies24 sh	24	$723.00
TWIN PEAKS WEALTH ADVISORS19 sh	19	$572.00
Bogart Wealth16 sh	16	$482.00
Vermillion Wealth Management15 sh	15	$452.00
Owl Creek Wealth Partners5 sh	5	$151.00
SouthState Bank5 sh	5	$151.00
TrueNorth5 sh	5	$150.00
AdvisorNet Financial2 sh	2	$60.00
SUMMIT SECURITIES GROUP1 sh	1	$30.00
CURIO WEALTH1 sh	1	$30.00

Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.