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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 Dec 2025
the date the book describes
Filed
27 Oct 2026
latest of these filings; the earliest 23 Jan 2026
Managers listing it
32
at least, of 95 tracked, among listed positions
Comparable managers
92
filed both Q3 2025 and Q4 2025; 6 listed it in both
Shares listed
29,002,192
combined, among listed positions
Reported value
$973m
combined, at the quarter end

Among the 92 comparable managers: 22 buyers (opened or added shares) and 13 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was -828,299.

Managers listing TTEK in Q4 2025

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q3 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 LLC8,351,221$280m0.21%Trimmed-676,47727 Oct 2026 (the filing on sec.gov)
AllianceBernstein LP3,078,999$103munder 0.1%Trimmed-3,502,24517 Feb 2026 (the filing on sec.gov)
AQR Capital Management LLC2,875,372$96m0.05%Added+2,238,72117 Feb 2026 (the filing on sec.gov)
Invesco Ltd2,570,107$86munder 0.1%Added+259,88719 Feb 2026 (the filing on sec.gov)
Janus Henderson Group Ltd1,961,290$66munder 0.1%Added+188,42617 Feb 2026 (the filing on sec.gov)
Capital Research Global Investors1,775,766$60munder 0.1%Trimmed-11,33711 Feb 2026 (the filing on sec.gov)
Wellington Management Group LLP1,055,274$35munder 0.1%Added+2,34317 Feb 2026 (the filing on sec.gov)
Arrowstreet Capital LP1,022,252$34munder 0.1%Added+272,49613 Feb 2026 (the filing on sec.gov)
D. E. Shaw & Co.720,789$24munder 0.1%Added+644,06417 Feb 2026 (the filing on sec.gov)
Millennium Management LLC655,489$22munder 0.1%Trimmed-765,69717 Feb 2026 (the filing on sec.gov)
Two Sigma Investments LP636,749$21munder 0.1%Added+144,44717 Feb 2026 (the filing on sec.gov)
Tudor Investment Corp612,982$21munder 0.1%Added+548,58117 Feb 2026 (the filing on sec.gov)
Renaissance Technologies LLC508,700$17munder 0.1%Added+1,00012 Feb 2026 (the filing on sec.gov)
Baillie Gifford & Co428,775$14munder 0.1%Trimmed-94,37523 Jan 2026 (the filing on sec.gov)
T. Rowe Price Associates Inc413,523$14munder 0.1%Added+18,67617 Feb 2026 (the filing on sec.gov)
Voloridge Investment Management LLC397,500$13munder 0.1%Added+365,17117 Feb 2026 (the filing on sec.gov)
Man Group PLC379,293$13munder 0.1%Added+358,06617 Feb 2026 (the filing on sec.gov)
Fidelity (FMR LLC)353,230$12munder 0.1%Added+13,89217 Feb 2026 (the filing on sec.gov)
Jane Street Group LLC254,834$8.5munder 0.1%Trimmed-117,04512 Feb 2026 (the filing on sec.gov)
Verition Fund Management LLC227,564$7.6munder 0.1%Added+73,66013 Feb 2026 (the filing on sec.gov)
PDT Partners LLC193,946$6.5m0.42%Added+163,69417 Feb 2026 (the filing on sec.gov)
Two Sigma Advisers LP156,400$5.2munder 0.1%Added+96,90017 Feb 2026 (the filing on sec.gov)
Marshall Wace LLP95,054$3.2munder 0.1%Newnew13 Feb 2026 (the filing on sec.gov)
Squarepoint Ops LLC68,856$2.3munder 0.1%Added+49,45513 Feb 2026 (the filing on sec.gov)
Bridgewater Associates LP64,301$2.2munder 0.1%Newnew13 Feb 2026 (the filing on sec.gov)
Page 1 of 2

Largest increases and reductions, by shares

Q3 2025 to Q4 2025, 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 (3)

Exited (3)

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 →