Citadel Advisors’s Tetra Tech TTEK Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q1 | $52.4M | Buy |
1,740,911
+1,690,318
| +3,341% | +$59.7M | 0.01% | 1315 |
|
|
2025
Q4 | $1.7M | Sell |
50,593
-948,776
| -95% | -$32.1M | ﹤0.01% | 6258 |
|
|
2025
Q3 | $33.4M | Sell |
999,369
-1,874,191
| -65% | -$68.1M | 0.01% | 1761 |
|
|
2025
Q2 | $103M | Buy |
2,873,560
+670,241
| +30% | +$22.3M | 0.02% | 747 |
|
|
2025
Q1 | $64.4M | Buy |
2,203,319
+1,555,533
| +240% | +$52.2M | 0.01% | 960 |
|
|
2024
Q4 | $25.8M | Buy |
647,786
+182,339
| +39% | +$8.19M | ﹤0.01% | 1894 |
|
|
2024
Q3 | $22M | Sell |
465,447
-357,238
| -43% | -$15.9M | ﹤0.01% | 1945 |
|
|
2024
Q2 | $33.6M | Sell |
822,685
-90,135
| -10% | -$3.67M | 0.01% | 1503 |
|
|
2024
Q1 | $33.7M | Sell |
912,820
-497,760
| -35% | -$17.2M | 0.01% | 1547 |
|
|
2023
Q4 | $47.1M | Buy |
1,410,580
+1,019,785
| +261% | +$32.6M | 0.01% | 1244 |
|
|
2023
Q3 | $11.9M | Buy |
390,795
+362,330
| +1,273% | +$11.8M | ﹤0.01% | 2465 |
|
|
2023
Q2 | $932K | Sell |
28,465
-33,960
| -54% | -$999K | ﹤0.01% | 6610 |
|
|
2023
Q1 | $1.83M | Sell |
62,425
-573,540
| -90% | -$16.6M | ﹤0.01% | 5552 |
|
|
2022
Q4 | $18.5M | Sell |
635,965
-99,310
| -14% | -$2.87M | ﹤0.01% | 2042 |
|
|
2022
Q3 | $18.9M | Buy |
735,275
+323,655
| +79% | +$9.06M | ﹤0.01% | 1932 |
|
|
2022
Q2 | $11.2M | Buy |
411,620
+314,525
| +324% | +$8.63M | ﹤0.01% | 2531 |
|
|
2022
Q1 | $3.2M | Sell |
97,095
-349,935
| -78% | -$10.8M | ﹤0.01% | 5033 |
|
|
2021
Q4 | $15.2M | Buy |
+447,030
| New | +$15.4M | ﹤0.01% | 2398 |
|
|
2021
Q3 | – | Sell |
-375,360
| Closed | -$10.3M | – | 14672 |
|
|
2021
Q2 | $9.16M | Buy |
375,360
+295,185
| +368% | +$7.43M | ﹤0.01% | 3212 |
|
|
2021
Q1 | $2.18M | Sell |
80,175
-413,925
| -84% | -$11M | ﹤0.01% | 6197 |
|
|
2020
Q4 | $11.4M | Buy |
+494,100
| New | +$11.1M | ﹤0.01% | 2464 |
|
|
2020
Q2 | – | Sell |
-388,665
| Closed | -$5.9M | – | 10518 |
|
|
2020
Q1 | $5.49M | Buy |
388,665
+123,970
| +47% | +$2.11M | ﹤0.01% | 2582 |
|
|
2019
Q4 | $4.56M | Buy |
264,695
+243,845
| +1,170% | +$4.22M | ﹤0.01% | 3195 |
|
|
2019
Q3 | $362K | Sell |
20,850
-46,270
| -69% | -$756K | ﹤0.01% | 7283 |
|
|
2019
Q2 | $1.05M | Sell |
67,120
-385,425
| -85% | -$5.19M | ﹤0.01% | 5617 |
|
|
2019
Q1 | $5.39M | Sell |
452,545
-43,505
| -9% | -$488K | ﹤0.01% | 2896 |
|
|
2018
Q4 | $5.14M | Buy |
496,050
+274,880
| +124% | +$3.41M | ﹤0.01% | 2742 |
|
|
2018
Q3 | $3.02M | Buy |
+221,170
| New | +$2.93M | ﹤0.01% | 3721 |
|
|
2018
Q2 | – | Sell |
-84,500
| Closed | -$903K | – | 9299 |
|
|
2018
Q1 | $827K | Buy |
84,500
+32,290
| +62% | +$319K | ﹤0.01% | 5086 |
|
|
2017
Q4 | $503K | Buy |
+52,210
| New | +$507K | ﹤0.01% | 5635 |
|
|
2016
Q4 | – | Sell |
-272,580
| Closed | -$1.93M | – | 7848 |
|
|
2016
Q3 | $1.93M | Sell |
272,580
-579,230
| -68% | -$3.92M | ﹤0.01% | 3009 |
|
|
2016
Q2 | $5.24M | Buy |
851,810
+193,345
| +29% | +$1.16M | 0.01% | 1782 |
|
|
2016
Q1 | $3.93M | Buy |
658,465
+521,735
| +382% | +$2.77M | 0.01% | 1990 |
|
|
2015
Q4 | $711K | Buy |
136,730
+13,075
| +11% | +$69.8K | ﹤0.01% | 4016 |
|
|
2015
Q3 | $601K | Buy |
123,655
+111,880
| +950% | +$572K | ﹤0.01% | 4541 |
|
|
2015
Q2 | $60K | Sell |
11,775
-36,955
| -76% | -$189K | ﹤0.01% | 7539 |
|
|
2015
Q1 | $234K | Sell |
48,730
-28,405
| -37% | -$140K | ﹤0.01% | 5986 |
|
|
2014
Q4 | $412K | Sell |
77,135
-214,125
| -74% | -$1.12M | ﹤0.01% | 4988 |
|
|
2014
Q3 | $1.46M | Sell |
291,260
-278,950
| -49% | -$1.45M | ﹤0.01% | 3241 |
|
|
2014
Q2 | $3.14M | Buy |
570,210
+460,985
| +422% | +$2.52M | ﹤0.01% | 2285 |
|
|
2014
Q1 | $646K | Buy |
109,225
+14,015
| +15% | +$81.6K | ﹤0.01% | 4001 |
|
|
2013
Q4 | $533K | Buy |
95,210
+63,610
| +201% | +$343K | ﹤0.01% | 3948 |
|
|
2013
Q3 | $164K | Sell |
31,600
-775,990
| -96% | -$3.72M | ﹤0.01% | 4955 |
|
|
2013
Q2 | $3.8M | Buy |
+807,590
| New | +$4.29M | 0.01% | 1833 |
|
Other funds holding TTEK
VPM
VCM
Citadel Advisors's TTEK Position: Q1 2026 in Review
Citadel Advisors increased its Tetra Tech (TTEK) stake by 3,341% in Q1 2026, buying an estimated $59.7M and bringing the position to 1,740,911 shares worth $52.4M. The position accounts for 0.01% of the portfolio, ranked #1315.
Citadel Advisors first reported a position in TTEK in Q2 2013 and has held it in 44 quarters since. The position peaked at $103M in Q2 2025. 588 funds tracked by Wall St. Rank hold TTEK as of Q1 2026.
- Citadel Advisors held 1,740,911 shares of Tetra Tech worth $52.4M as of Q1 2026.
- Citadel Advisors bought 1,690,318 Tetra Tech shares in Q1 2026, an estimated $59.7M.
- Tetra Tech made up 0.01% of Citadel Advisors's portfolio in Q1 2026, its #1315 holding.
- Citadel Advisors first reported a position in Tetra Tech in Q2 2013 and has held it in 44 quarters since.
- Citadel Advisors's Tetra Tech position peaked at $103M in Q2 2025.
- 588 funds tracked by Wall St. Rank held Tetra Tech as of Q1 2026.
Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.