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 		$6.05M Sell
176,100
-80,900
-31% -$2.38M ﹤0.01% 4259
2026
Q1 		$7.94M Buy
257,000
+191,100
+290% +$4.7M ﹤0.01% 3472
2025
Q4 		$1.37M Sell
65,900
-82,200
-56% -$1.53M ﹤0.01% 6449
2025
Q3 		$2.32M Buy
+148,100
New +$3.06M ﹤0.01% 5467
2024
Q1 		– Sell
-9,275
Closed -$151K – 13558
2023
Q4 		$151K Sell
9,275
-1,258
-12% -$21.6K ﹤0.01% 10972
2023
Q3 		$195K Buy
+10,533
New +$186K ﹤0.01% 10260
2022
Q1 		– Sell
-1,042
Closed -$48K – 14133
2021
Q4 		$48K Buy
+1,042
New +$59.9K ﹤0.01% 12574
2021
Q2 		– Sell
-1,108
Closed -$169K – 13389
2021
Q1 		$169K Buy
+1,108
New +$180K ﹤0.01% 11559

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.