South Dakota Investment Council’s Tetra Tech TTEK Stock Holding History

South Dakota Investment Council’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	$1.42M	Hold	47,072	–	–	0.03%	373
2025 Q4	$1.58M	Sell	47,072 -7,198	-13%	-$243K	0.03%	342
2025 Q3	$1.81M	Sell	54,270 -50,500	-48%	-$1.84M	0.04%	332
2025 Q2	$3.77M	Sell	104,770 -3,300	-3%	-$110K	0.07%	233
2025 Q1	$3.16M	Buy	108,070 +7,800	+8%	+$262K	0.06%	239
2024 Q4	$4M	Buy	100,270 +6,900	+7%	+$310K	0.08%	210
2024 Q3	$4.4M	Hold	93,370	–	–	0.09%	202
2024 Q2	$3.82M	Sell	93,370 -115	-0.1%	-$4.69K	0.08%	215
2024 Q1	$3.45M	Sell	93,485 -1,500	-2%	-$52K	0.07%	227
2023 Q4	$3.17M	Hold	94,985	–	–	0.07%	256
2023 Q3	$2.89M	Sell	94,985 -1,500	-2%	-$48.8K	0.07%	247
2023 Q2	$3.16M	Buy	96,485 +2,600	+3%	+$76.5K	0.07%	249
2023 Q1	$2.76M	Buy	93,885 +50,000	+114%	+$1.44M	0.06%	270
2022 Q4	$1.27M	Hold	43,885	–	–	0.03%	417
2022 Q3	$1.13M	Hold	43,885	–	–	0.03%	411
2022 Q2	$1.2M	Sell	43,885 -20,000	-31%	-$548K	0.03%	409
2022 Q1	$2.11M	Sell	63,885 -10,985	-15%	-$338K	0.04%	306
2021 Q4	$2.54M	Sell	74,870 -60,500	-45%	-$2.08M	0.04%	311
2021 Q3	$4.04M	Hold	135,370	–	–	0.07%	235
2021 Q2	$3.3M	Sell	135,370 -16,850	-11%	-$424K	0.06%	261
2021 Q1	$4.13M	Buy	152,220 +370	+0.2%	+$9.8K	0.07%	240
2020 Q4	$3.52M	Hold	151,850	–	–	0.06%	241
2020 Q3	$2.9M	Buy	+151,850	New	+$2.7M	0.06%	236
2019 Q4	–	Sell	-59,650	Closed	-$1.03M	–	609
2019 Q3	$1.03M	Buy	59,650 +4,150	+7%	+$67.8K	0.02%	447
2019 Q2	$872K	Hold	55,500	–	–	0.02%	441
2019 Q1	$661K	Hold	55,500	–	–	0.01%	474
2018 Q4	$575K	Hold	55,500	–	–	0.01%	456
2018 Q3	$758K	Sell	55,500 -67,500	-55%	-$894K	0.02%	454
2018 Q2	$1.44M	Hold	123,000	–	–	0.03%	376
2018 Q1	$1.2M	Hold	123,000	–	–	0.03%	394
2017 Q4	$1.18M	Sell	123,000 -237,000	-66%	-$2.3M	0.03%	403
2017 Q3	$3.35M	Hold	360,000	–	–	0.07%	211
2017 Q2	$3.29M	Hold	360,000	–	–	0.07%	213
2017 Q1	$2.94M	Sell	360,000 -90,500	-20%	-$750K	0.06%	239
2016 Q4	$3.89M	Sell	450,500 -295,000	-40%	-$2.38M	0.08%	186
2016 Q3	$5.29M	Sell	745,500 -187,500	-20%	-$1.27M	0.11%	156
2016 Q2	$5.74M	Hold	933,000	–	–	0.13%	143
2016 Q1	$5.56M	Hold	933,000	–	–	0.12%	141
2015 Q4	$4.86M	Hold	933,000	–	–	0.11%	152
2015 Q3	$4.54M	Hold	933,000	–	–	0.1%	151
2015 Q2	$4.78M	Buy	933,000 +151,000	+19%	+$774K	0.1%	157
2015 Q1	$3.76M	Buy	782,000 +68,500	+10%	+$339K	0.07%	194
2014 Q4	$3.81M	Hold	713,500	–	–	0.07%	184
2014 Q3	$3.56M	Buy	+713,500	New	+$3.72M	0.07%	185

Other funds holding TTEK

BlackRock New York $6.73T AUM 46.02% 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 $3.37T AUM 44.26% 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

South Dakota Investment Council's TTEK Position: Q1 2026 in Review

South Dakota Investment Council held its Tetra Tech (TTEK) position steady in Q1 2026 at 47,072 shares worth $1.42M. The position accounts for 0.03% of the portfolio, ranked #373.

South Dakota Investment Council first reported a position in TTEK in Q3 2014 and has held it in 44 quarters since. The position peaked at $5.74M in Q2 2016. 589 funds tracked by Wall St. Rank hold TTEK as of Q1 2026.

South Dakota Investment Council held 47,072 shares of Tetra Tech worth $1.42M as of Q1 2026.
South Dakota Investment Council left its Tetra Tech share count unchanged in Q1 2026.
Tetra Tech made up 0.03% of South Dakota Investment Council's portfolio in Q1 2026, its #373 holding.
South Dakota Investment Council first reported a position in Tetra Tech in Q3 2014 and has held it in 44 quarters since.
South Dakota Investment Council's Tetra Tech position peaked at $5.74M in Q2 2016.
589 funds tracked by Wall St. Rank held Tetra Tech as of Q1 2026.

Based on South Dakota Investment Council's 13F filing for Q1 2026, filed 18 May 2026.