Jane Street’s Tetra Tech TTEK Stock Holding History

Jane Street’s Portfolio TTEK Stock Details TTEK Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$873K	Buy	+29,000	New	+$1.03M	﹤0.01%	6811
2025 Q4	–	Sell	-133,900	Closed	-$4.47M	–	12415
2025 Q3	$4.47M	Buy	+133,900	New	+$4.87M	﹤0.01%	3593
2022 Q3	–	Sell	-9,000	Closed	-$246K	–	10489
2022 Q2	$246K	Sell	9,000 -4,500	-33%	-$123K	﹤0.01%	7901
2022 Q1	$445K	Buy	+13,500	New	+$415K	﹤0.01%	7700
2021 Q4	–	Sell	-8,000	Closed	-$239K	–	10828
2021 Q3	$239K	Sell	8,000 -5,500	-41%	-$151K	﹤0.01%	8590
2021 Q2	$330K	Buy	13,500 +1,500	+13%	+$37.7K	﹤0.01%	7984
2021 Q1	$326K	Buy	+12,000	New	+$318K	﹤0.01%	7563

Other funds holding TTEK

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Capital International Investors Los Angeles, California $427B AUM 29.17% 1-Year Est. Return

Pictet Asset Management Carouge, Switzerland $105B AUM 38.07% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Neuberger Berman Group New York $131B AUM 28.36% 1-Year Est. Return

Sands Capital Management Arlington, Virginia $25.5B AUM 26.46% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Fidelity International Hamilton, Bermuda $129B AUM 30.83% 1-Year Est. Return

Jane Street's TTEK Position: Q1 2026 in Review

Jane Street reduced its Tetra Tech (TTEK) stake by 19% in Q1 2026, selling an estimated $1.7M and leaving 206,806 shares worth $6.23M. The position accounts for ﹤0.01% of the portfolio, ranked #3184.

Jane Street first reported a position in TTEK in Q1 2016 and has held it in 28 quarters since. The position peaked at $20.2M in Q2 2025. 589 funds tracked by Wall St. Rank hold TTEK as of Q1 2026.

Jane Street held 206,806 shares of Tetra Tech worth $6.23M as of Q1 2026.
Jane Street sold 48,028 Tetra Tech shares in Q1 2026, an estimated $1.7M.
Tetra Tech made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #3184 holding.
Jane Street first reported a position in Tetra Tech in Q1 2016 and has held it in 28 quarters since.
Jane Street's Tetra Tech position peaked at $20.2M in Q2 2025.
589 funds tracked by Wall St. Rank held Tetra Tech as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.