Citadel Advisors
TECX

Citadel Advisors’s Tectonic Therapeutic TECX Stock Holding History

Citadel Advisors’s Portfolio TECX Stock Details TECX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$584K Sell
17,000
-35,400
-68% -$1.04M ﹤0.01% 9484
2026
Q1 		$1.62M Buy
52,400
+7,700
+17% +$189K ﹤0.01% 6559
2025
Q4 		$932K Buy
+44,700
New +$831K ﹤0.01% 7553
2024
Q2 		– Sell
-750
Closed -$11.5K – 15618
2024
Q1 		$11.5K Sell
750
-333
-31% -$5.27K ﹤0.01% 13405
2023
Q4 		$17.7K Buy
1,083
+350
+48% +$6.01K ﹤0.01% 12730
2023
Q3 		$13.6K Buy
733
+125
+21% +$2.21K ﹤0.01% 12916
2023
Q2 		$6.94K Hold
608
– – ﹤0.01% 13396
2023
Q1 		$7.3K Buy
608
+33
+6% +$460 ﹤0.01% 13739
2022
Q4 		$4.92K Buy
+575
New +$5.06K ﹤0.01% 14054
2022
Q3 		– Sell
-1,933
Closed -$21K – 13774
2022
Q2 		$21K Sell
1,933
-7,859
-80% -$92.6K ﹤0.01% 12392
2022
Q1 		$155K Buy
9,792
+275
+3% +$5.68K ﹤0.01% 11829
2021
Q4 		$440K Buy
+9,517
New +$547K ﹤0.01% 10001
2021
Q3 		– Sell
-842
Closed -$90K – 14807
2021
Q2 		$90K Sell
842
-2,908
-78% -$345K ﹤0.01% 13000
2021
Q1 		$571K Buy
3,750
+2,575
+219% +$419K ﹤0.01% 9394
2020
Q4 		$197K Buy
+1,175
New +$209K ﹤0.01% 9742
2020
Q3 		– Sell
-1,358
Closed -$284K – 10859
2020
Q2 		$284K Buy
+1,358
New +$280K ﹤0.01% 7998

Other funds holding TECX

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
TCM
TCG Crossover Management Palo Alto, California $4.16B AUM 983.43% 1-Year Est. Return
Aberdeen Group
Aberdeen Group Edinburgh, United Kingdom $71.2B AUM 41.74% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
FLAM
First Light Asset Management Edina, Minnesota $1.65B AUM 203.21% 1-Year Est. Return
BBA
Baker Bros. Advisors New York $20B AUM 154.41% 1-Year Est. Return
5VM
5AM Venture Management San Francisco, California $288M AUM 313.93% 1-Year Est. Return
B
Braidwell Stamford, Connecticut $2.7B AUM 88.53% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
VPC
Vestal Point Capital New York $4.28B AUM 239% 1-Year Est. Return

Citadel Advisors's TECX Position: Q2 2026 in Review

Citadel Advisors opened a new position in Tectonic Therapeutic (TECX) in Q2 2026: 90,393 shares worth $3.11M. The stake represents ﹤0.01% of the portfolio and ranks #5636 among its holdings. This is a return to the name: Citadel Advisors previously reported a position in TECX as recently as Q4 2025.

Citadel Advisors first reported a position in TECX in Q2 2018 and has held it in 29 quarters since. The position peaked at $77.4M in Q3 2018. 123 funds tracked by Wall St. Rank hold TECX as of Q2 2026.

  • Citadel Advisors held 90,393 shares of Tectonic Therapeutic worth $3.11M as of Q2 2026.
  • Tectonic Therapeutic was a new Citadel Advisors position in Q2 2026.
  • Tectonic Therapeutic made up ﹤0.01% of Citadel Advisors's portfolio in Q2 2026, its #5636 holding.
  • Citadel Advisors first reported a position in Tectonic Therapeutic in Q2 2018 and has held it in 29 quarters since.
  • Citadel Advisors's Tectonic Therapeutic position peaked at $77.4M in Q3 2018.
  • 123 funds tracked by Wall St. Rank held Tectonic Therapeutic as of Q2 2026.

Based on Citadel Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.