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South Dakota Investment Council

Position in TTEK — Tetra Tech Inc

CIK 1538846 SIOUX FALLS, SD

Position in TTEK

as of Jun 30, 2026 · filed Aug 11, 2026
Position Value
$1,391,689
-$26,119 QoQ
Shares Held
48,172
+2.3% QoQ
Ownership
0.019%
of shares outstanding
% of Portfolio
0.03%
of 13F equity value
Holder Rank
#220
of 543 holders
Holding Since
Sep 2020
24 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in TTEK Over Time

Shares Held

Position Value (USD)

Position in Engineering & Construction

Industrials · as of Jun 30, 2026

South Dakota Investment Council holds $27,944,525 across 9 Engineering & Construction names. TTEK ranks #7 (5.0% of the industry book) .

# Ticker Company Shares Value (USD) Open
7 TTEK
Tetra Tech Inc
This page
48,172 $1,391,689

All Filings in TTEK

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24 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $1,391,689 48,172
2026-03-31 $1,417,808 47,072
2025-12-31 $1,578,794 47,072
2025-09-30 $1,811,532 54,270
2025-06-30 $3,767,529 104,770
2025-03-31 $3,161,047 108,070
2024-12-31 $3,994,756 100,270
2024-09-30 $4,403,329 93,370
2024-06-30 $3,818,459 18,674
2024-03-31 $3,453,522 18,697
2023-12-31 $3,171,169 18,997
2023-09-30 $2,888,113 18,997
2023-06-30 $3,159,690 19,297
2023-03-31 $2,758,529 18,777
2022-12-31 $1,274,332 8,777
2022-09-30 $1,128,107 8,777
2022-06-30 $1,198,499 8,777
2022-03-31 $2,107,438 12,777
2021-12-31 $2,542,585 14,974
2021-09-30 $4,043,231 27,074
2021-06-30 $3,304,110 27,074
2021-03-31 $4,131,859 30,444
2020-12-31 $3,516,238 30,370
2020-09-30 $2,900,335 30,370