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TTEK in the 13F filings

Tetra Tech Inc New · CUSIP 88162G103

Sector · Business and payment services
Quarter
Q3 2026 · early filersQ2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023
Quarter end
31 Mar 2026
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 8 May 2026
Managers listing it
32
at least, of 95 tracked, among listed positions
Comparable managers
91
filed both Q4 2025 and Q1 2026; 8 listed it in both
Shares listed
29,590,966
combined, among listed positions
Reported value
$901m
combined, at the quarter end

AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.

Among the 91 comparable managers: 16 buyers (opened or added shares) and 20 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was +745,174.

Managers listing TTEK in Q1 2026

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q4 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

32 of 32 holders

ActionFiling
Neuberger Berman Group LLC7,269,657$219m0.17%Trimmed-1,081,56427 Oct 2026 (the filing on sec.gov)
Wellington Management Group LLP4,804,049$145munder 0.1%Added+3,748,77515 May 2026 (the filing on sec.gov)
AllianceBernstein LP2,807,465$94munder 0.1%Trimmed-271,53415 May 2026 (the filing on sec.gov)
Invesco Ltd2,934,900$88munder 0.1%Added+364,79312 May 2026 (the filing on sec.gov)
Citadel Advisors LLC1,740,911$52munder 0.1%Added+1,690,31815 May 2026 (the filing on sec.gov)
AQR Capital Management LLC1,514,462$45munder 0.1%Trimmed-1,360,91015 May 2026 (the filing on sec.gov)
Capital Research Global Investors1,102,450$33munder 0.1%Trimmed-673,31613 May 2026 (the filing on sec.gov)
Janus Henderson Group Ltd1,029,853$31munder 0.1%Trimmed-931,43718 May 2026 (the filing on sec.gov)
Marshall Wace LLP719,618$22munder 0.1%Added+624,56415 May 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc584,462$18munder 0.1%Added+170,93915 May 2026 (the filing on sec.gov)
Arrowstreet Capital LP543,466$16munder 0.1%Trimmed-478,78614 May 2026 (the filing on sec.gov)
Point72 Asset Management LP542,267$16munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Renaissance Technologies LLC453,600$14munder 0.1%Trimmed-55,10014 May 2026 (the filing on sec.gov)
Balyasny Asset Management LLC434,471$13munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Squarepoint Ops LLC417,343$13munder 0.1%Added+348,48715 May 2026 (the filing on sec.gov)
Voloridge Investment Management LLC355,820$11munder 0.1%Trimmed-41,68015 May 2026 (the filing on sec.gov)
Fidelity (FMR LLC)328,252$9.9munder 0.1%Trimmed-24,97815 May 2026 (the filing on sec.gov)
Baillie Gifford & Co313,565$9.4munder 0.1%Trimmed-115,2108 May 2026 (the filing on sec.gov)
Millennium Management LLC266,573$8.0munder 0.1%Trimmed-388,91615 May 2026 (the filing on sec.gov)
Man Group PLC217,545$6.6munder 0.1%Trimmed-161,74815 May 2026 (the filing on sec.gov)
Bridgewater Associates LP213,945$6.4munder 0.1%Added+149,64415 May 2026 (the filing on sec.gov)
Jane Street Group LLC206,806$6.2munder 0.1%Trimmed-48,02812 May 2026 (the filing on sec.gov)
Two Sigma Investments LP183,765$5.5munder 0.1%Trimmed-452,98415 May 2026 (the filing on sec.gov)
Susquehanna International Group LLP160,236$4.8munder 0.1%Newnew15 May 2026 (the filing on sec.gov)
Caxton Associates LLP135,813$4.1m0.09%Newnew14 May 2026 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

Q4 2025 to Q1 2026, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (5)

Exited (4)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
8 in Q3 2024 to 10 in Q2 2026

Tracked managers listing it, at least.

035810split2014201620182020202220242026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
TTEK by quarter
QuarterHoldersReported valueBuyersSellers
Q2 20132$49mn.a.n.a.
Q3 20131$55mn.a.n.a.
Q4 20132$59mn.a.n.a.
Q1 20142$60mn.a.n.a.
Q2 20141$53mn.a.n.a.
Q3 20142$31mn.a.n.a.
Q4 20141$27mn.a.n.a.
Q1 20152$16mn.a.n.a.
Q2 20152$15mn.a.n.a.
Q3 20151$12mn.a.n.a.
Q4 20153$42mn.a.n.a.
Q1 20163$44mn.a.n.a.
Q2 20162$36mn.a.n.a.
Q3 20162$34mn.a.n.a.
Q4 20163$40mn.a.n.a.
Q1 20174$38mn.a.n.a.
Q2 20172$42mn.a.n.a.
Q3 20171$36mn.a.n.a.
Q4 20171$38mn.a.n.a.
Q1 20181$36mn.a.n.a.
Q2 20182$101mn.a.n.a.
Q3 20183$120mn.a.n.a.
Q4 20186$86mn.a.n.a.
Q1 20195$73mn.a.n.a.
Q2 20196$168mn.a.n.a.
Q3 20195$222mn.a.n.a.
Q4 20194$206mn.a.n.a.
Q1 20208$209mn.a.n.a.
Q2 20204$214mn.a.n.a.
Q3 20203$274mn.a.n.a.
Q4 20205$592mn.a.n.a.
Q1 20214$575mn.a.n.a.
Q2 20216$531mn.a.n.a.
Q3 20213$675mn.a.n.a.
Q4 20213$753mn.a.n.a.
Q1 20226$938mn.a.n.a.
Q2 20227$789mn.a.n.a.
Q3 202210$738mn.a.n.a.
Q4 202210$776mn.a.n.a.
Q1 20236$741mn.a.n.a.
Q2 20235$796mn.a.n.a.
Q3 20236$674mn.a.n.a.
Q4 20235$717m32
Q1 20244$801m32
Q2 20247$860m53
Q3 2024 (split)8$1.1bn20
Q4 20248$720m54
Q1 202510$494m83
Q2 20257$669m53
Q3 20257$665m52
Q4 20259$660m2213
Q1 202610$526m1620
Q2 202610$457m1519

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

TTEK and V →TTEK and MA →TTEK and MCO →Choose a stock to compare with TTEK →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own TTEK, latest filings →Back to the 13F Explorer →