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STATE OF WISCONSIN INVESTMENT BOARD

Position in TTEK — Tetra Tech Inc

CIK 854157 MADISON, WI

Position in TTEK

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$8,070,912
-$932,106 QoQ
Shares Held
279,367
-6.5% QoQ
Ownership
0.109%
of shares outstanding
% of Portfolio
0.02%
of 13F equity value
Holder Rank
#103
of 543 holders
Holding Since
Mar 2020
26 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

STATE OF WISCONSIN INVESTMENT BOARD holds $307,481,128 across 30 Engineering & Construction names. TTEK ranks #14 (2.6% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in TTEK

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26 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $8,070,912 279,367
2026-03-31 $9,003,018 298,905
2025-12-31 $10,593,038 315,833
2025-09-30 $10,495,139 314,414
2025-06-30 $11,394,789 316,874
2025-03-31 $10,807,670 369,493
2024-12-31 $13,621,375 341,902
2024-09-30 $16,530,994 350,530
2024-06-30 $13,401,005 65,537
2024-03-31 $12,570,254 68,054
2023-12-31 $12,848,602 76,970
2023-09-30 $10,898,574 71,687
2023-06-30 $12,418,369 75,842
2023-03-31 $11,445,317 77,907
2022-12-31 $12,681,765 87,346
2022-09-30 $11,651,244 90,650
2022-06-30 $12,854,543 94,138
2022-03-31 $34,728,117 210,550
2021-12-31 $35,751,390 210,550
2021-09-30 $31,443,537 210,550
2021-06-30 $25,695,522 210,550
2021-03-31 $28,575,846 210,550
2020-12-31 $24,377,479 210,550
2020-09-30 $22,609,625 236,750
2020-06-30 $18,731,660 236,750
2020-03-31 $16,719,285 236,750