XT
TECX

XTX Topco’s Tectonic Therapeutic TECX Stock Holding History

XTX Topco’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
Q1 		$359K Buy
+11,621
New +$286K 0.01% 2323
2025
Q4 		– Sell
-10,856
Closed -$170K – 3913
2025
Q3 		$170K Buy
+10,856
New +$224K 0.01% 1897
2024
Q2 		– Sell
-2,030
Closed -$31.2K – 2563
2024
Q1 		$31.2K Sell
2,030
-2,549
-56% -$40.4K ﹤0.01% 1547
2023
Q4 		$74.7K Buy
4,579
+2,153
+89% +$37K 0.02% 1168
2023
Q3 		$44.8K Buy
+2,426
New +$42.9K 0.01% 1290
2022
Q2 		– Sell
-1,941
Closed -$31K – 1151
2022
Q1 		$31K Buy
1,941
+11
+0.6% +$227 0.01% 618
2021
Q4 		$89K Buy
+1,930
New +$111K 0.05% 483

Other funds holding TECX

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
TCM
TCG Crossover Management Palo Alto, California $3.5B AUM 1,165.83% 1-Year Est. Return
Aberdeen Group
Aberdeen Group Edinburgh, United Kingdom $61.9B AUM 29.81% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
B
Braidwell Stamford, Connecticut $3B AUM 46.72% 1-Year Est. Return
FLAM
First Light Asset Management Edina, Minnesota $1.12B AUM 114.45% 1-Year Est. Return
BBA
Baker Bros. Advisors New York $17.4B AUM 131.5% 1-Year Est. Return
5VM
5AM Venture Management San Francisco, California $360M AUM 345.76% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
VPC
Vestal Point Capital New York $3.58B AUM 189.12% 1-Year Est. Return

XTX Topco's TECX Position: Q1 2026 in Review

XTX Topco opened a new position in Tectonic Therapeutic (TECX) in Q1 2026: 11,621 shares worth $359K. The stake represents 0.01% of the portfolio and ranks #2323 among its holdings. This is a return to the name: XTX Topco previously reported a position in TECX as recently as Q3 2025.

XTX Topco first reported a position in TECX in Q4 2021 and has held it in 7 quarters since. 111 funds tracked by Wall St. Rank hold TECX as of Q1 2026.

  • XTX Topco held 11,621 shares of Tectonic Therapeutic worth $359K as of Q1 2026.
  • Tectonic Therapeutic was a new XTX Topco position in Q1 2026.
  • Tectonic Therapeutic made up 0.01% of XTX Topco's portfolio in Q1 2026, its #2323 holding.
  • XTX Topco first reported a position in Tectonic Therapeutic in Q4 2021 and has held it in 7 quarters since.
  • 111 funds tracked by Wall St. Rank held Tectonic Therapeutic as of Q1 2026.

Based on XTX Topco's 13F filing for Q1 2026, filed 15 May 2026.