Marshall Wace’s Tectonic Therapeutic TECX Stock Holding History

Marshall Wace’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	$5.92M	Sell	172,101 -57,494	-25%	-$1.69M	﹤0.01%	1284
2026 Q1	$7.1M	Buy	229,595 +198,677	+643%	+$4.89M	0.01%	1132
2025 Q4	$645K	Buy	30,918 +5,842	+23%	+$109K	﹤0.01%	2137
2025 Q3	$393K	Buy	25,076 +14,398	+135%	+$297K	﹤0.01%	2316
2025 Q2	$212K	Sell	10,678 -42,662	-80%	-$865K	﹤0.01%	2442
2025 Q1	$945K	Buy	+53,340	New	+$1.74M	﹤0.01%	1807
2022 Q1	–	Sell	-3,893	Closed	-$179K	–	4135
2021 Q4	$179K	Buy	3,893 +2,955	+315%	+$170K	﹤0.01%	3200
2021 Q3	$63K	Buy	+938	New	+$77K	﹤0.01%	2922
2021 Q2	–	Sell	-4,566	Closed	-$695K	–	3179
2021 Q1	$695K	Buy	+4,566	New	+$743K	﹤0.01%	1811
2020 Q1	–	Sell	-126	Closed	-$30K	–	2129
2019 Q4	$30K	Buy	+126	New	+$24.3K	﹤0.01%	1580

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

Marshall Wace's TECX Position: Q2 2026 in Review

Marshall Wace reduced its Tectonic Therapeutic (TECX) stake by 25% in Q2 2026, selling an estimated $1.69M and leaving 172,101 shares worth $5.92M. The position accounts for ﹤0.01% of the portfolio, ranked #1284.

Marshall Wace first reported a position in TECX in Q4 2019 and has held it in 10 quarters since. The position peaked at $7.1M in Q1 2026. 123 funds tracked by Wall St. Rank hold TECX as of Q2 2026.

Marshall Wace held 172,101 shares of Tectonic Therapeutic worth $5.92M as of Q2 2026.
Marshall Wace sold 57,494 Tectonic Therapeutic shares in Q2 2026, an estimated $1.69M.
Tectonic Therapeutic made up ﹤0.01% of Marshall Wace's portfolio in Q2 2026, its #1284 holding.
Marshall Wace first reported a position in Tectonic Therapeutic in Q4 2019 and has held it in 10 quarters since.
Marshall Wace's Tectonic Therapeutic position peaked at $7.1M in Q1 2026.
123 funds tracked by Wall St. Rank held Tectonic Therapeutic as of Q2 2026.

Based on Marshall Wace's 13F filing for Q2 2026, filed 13 Aug 2026.