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 		$399K Sell
11,600
-8,700
-43% -$256K ﹤0.01% 10417
2026
Q1 		$627K Sell
20,300
-1,000
-5% -$24.6K ﹤0.01% 9076
2025
Q4 		$444K Sell
21,300
-25,000
-54% -$465K ﹤0.01% 9082
2025
Q3 		$726K Buy
+46,300
New +$956K ﹤0.01% 8108
2021
Q1 		– Sell
-1,617
Closed -$270K – 12940
2020
Q4 		$270K Buy
+1,617
New +$287K ﹤0.01% 9487

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.