Aldebaran Capital’s Tectonic Therapeutic TECX Stock Holding History

Aldebaran Capital’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	$1.26M	Sell	36,797 -387	-1%	-$11.4K	0.95%	27
2026 Q1	$1.15M	Sell	37,184 -169	-0.5%	-$4.16K	0.88%	27
2025 Q4	$779K	Sell	37,353 -1,149	-3%	-$21.4K	0.7%	24
2025 Q3	$604K	Sell	38,502 -1,756	-4%	-$36.2K	0.55%	24
2025 Q2	$800K	Sell	40,258 -638	-2%	-$12.9K	0.79%	24
2025 Q1	$724K	Sell	40,896 -311	-0.8%	-$10.1K	0.69%	25
2024 Q4	$1.9M	Sell	41,207 -784	-2%	-$33.2K	1.81%	15
2024 Q3	$1.27M	Hold	41,991	–	–	1.16%	19
2024 Q2	$692K	Sell	41,991 -1,128	-3%	-$18.1K	0.64%	23
2024 Q1	$662K	Buy	43,119 +5,203	+14%	+$82.4K	0.63%	22
2023 Q4	$619K	Sell	37,916 -1,262	-3%	-$21.7K	0.63%	21
2023 Q3	$724K	Buy	+39,178	New	+$693K	0.74%	21

Other funds holding TECX

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 Edinburgh, United Kingdom $71.2B AUM 41.74% 1-Year Est. Return

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

Braidwell Stamford, Connecticut $2.7B AUM 88.53% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

VPC

Vestal Point Capital New York $4.28B AUM 239% 1-Year Est. Return

Aldebaran Capital's TECX Position: Q2 2026 in Review

Aldebaran Capital reduced its Tectonic Therapeutic (TECX) stake by 1% in Q2 2026, selling an estimated $11.4K and leaving 36,797 shares worth $1.26M. The position accounts for 0.95% of the portfolio, ranked #27.

Aldebaran Capital first reported a position in TECX in Q3 2023 and has held it in 12 quarters since. The position peaked at $1.9M in Q4 2024. 122 funds tracked by Wall St. Rank hold TECX as of Q2 2026.

Aldebaran Capital held 36,797 shares of Tectonic Therapeutic worth $1.26M as of Q2 2026.
Aldebaran Capital sold 387 Tectonic Therapeutic shares in Q2 2026, an estimated $11.4K.
Tectonic Therapeutic made up 0.95% of Aldebaran Capital's portfolio in Q2 2026, its #27 holding.
Aldebaran Capital first reported a position in Tectonic Therapeutic in Q3 2023 and has held it in 12 quarters since.
Aldebaran Capital's Tectonic Therapeutic position peaked at $1.9M in Q4 2024.
122 funds tracked by Wall St. Rank held Tectonic Therapeutic as of Q2 2026.

Based on Aldebaran Capital's 13F filing for Q2 2026, filed 14 Aug 2026.