JY
TECX

Jeff Yass’s Tectonic Therapeutic TECX Stock Holding History

Jeff Yass’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 		– Sell
-16,175
Closed -$475K – 14734
2026
Q1 		$500K Sell
16,175
-135,538
-89% -$3.34M ﹤0.01% 9666
2025
Q4 		$3.16M Buy
+151,713
New +$2.82M ﹤0.01% 4787
2025
Q3 		– Sell
-18,707
Closed -$386K – 14167
2025
Q2 		$372K Sell
18,707
-87,996
-82% -$1.78M ﹤0.01% 9859
2025
Q1 		$1.89M Sell
106,703
-59,749
-36% -$1.95M ﹤0.01% 5668
2024
Q4 		$7.69M Buy
166,452
+103,698
+165% +$4.39M ﹤0.01% 2980
2024
Q3 		$1.9M Buy
+62,754
New +$1.15M ﹤0.01% 5364
2024
Q2 		– Sell
-2,878
Closed -$44.2K – 13417
2024
Q1 		$44.2K Buy
+2,878
New +$45.6K ﹤0.01% 11602
2023
Q2 		– Sell
-2,034
Closed -$24.4K – 13328
2023
Q1 		$24.4K Buy
+2,034
New +$28.3K ﹤0.01% 11993
2022
Q3 		– Sell
-1,439
Closed -$16K – 14276
2022
Q2 		$16K Buy
+1,439
New +$17K ﹤0.01% 12418
2022
Q1 		– Sell
-1,812
Closed -$84K – 14134
2021
Q4 		$84K Buy
1,812
+802
+79% +$46.1K ﹤0.01% 12258
2021
Q3 		$68K Sell
1,010
-2,516
-71% -$206K ﹤0.01% 12240
2021
Q2 		$376K Buy
3,526
+1,160
+49% +$138K ﹤0.01% 10286
2021
Q1 		$360K Buy
2,366
+777
+49% +$126K ﹤0.01% 10223
2020
Q4 		$266K Buy
+1,589
New +$282K ﹤0.01% 9526
2020
Q2 		– Sell
-1,099
Closed -$205K – 11079
2020
Q1 		$205K Buy
+1,099
New +$259K ﹤0.01% 8643
2019
Q4 		– Sell
-934
Closed -$158K – 10813
2019
Q3 		$158K Buy
+934
New +$211K ﹤0.01% 9291

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

Jeff Yass's TECX Position: Q2 2026 in Review

Jeff Yass sold out of Tectonic Therapeutic (TECX) in Q2 2026, closing a stake of 16,175 shares — an estimated $475K sold.

Jeff Yass first reported a position in TECX in Q3 2019 and held it in 16 quarters. The position peaked at $7.69M in Q4 2024. 122 funds tracked by Wall St. Rank hold TECX as of Q2 2026.

  • Jeff Yass reported no remaining Tectonic Therapeutic position as of Q2 2026 after selling out during the quarter.
  • Jeff Yass sold 16,175 Tectonic Therapeutic shares in Q2 2026, an estimated $475K.
  • Jeff Yass first reported a position in Tectonic Therapeutic in Q3 2019 and held it in 16 quarters.
  • Jeff Yass's Tectonic Therapeutic position peaked at $7.69M in Q4 2024.
  • 122 funds tracked by Wall St. Rank held Tectonic Therapeutic as of Q2 2026.

Based on Susquehanna International Group's 13F filing for Q2 2026, filed 14 Aug 2026.