Wellington Management Group
TECX

Wellington Management Group’s Tectonic Therapeutic TECX Stock Holding History

Wellington Management Group’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 		$904K Sell
29,240
-8,139
-22% -$200K ﹤0.01% 1692
2025
Q4 		$780K Buy
37,379
+17
+0% +$316 ﹤0.01% 1760
2025
Q3 		$586K Buy
37,362
+8,817
+31% +$182K ﹤0.01% 1864
2025
Q2 		$567K Buy
28,545
+8,885
+45% +$180K ﹤0.01% 1806
2025
Q1 		$348K Buy
+19,660
New +$641K ﹤0.01% 1863
2021
Q2 		– Sell
-14,992
Closed -$2.28M – 2273
2021
Q1 		$2.28M Sell
14,992
-49,465
-77% -$8.05M ﹤0.01% 1601
2020
Q4 		$10.8M Sell
64,457
-7,427
-10% -$1.32M ﹤0.01% 1173
2020
Q3 		$11.2M Sell
71,884
-4,588
-6% -$924K ﹤0.01% 1078
2020
Q2 		$16M Buy
76,472
+2,566
+3% +$529K ﹤0.01% 969
2020
Q1 		$13.8M Buy
73,906
+59,557
+415% +$14M ﹤0.01% 964
2019
Q4 		$3.47M Buy
14,349
+53
+0.4% +$10.2K ﹤0.01% 1418
2019
Q3 		$2.42M Sell
14,296
-8,015
-36% -$1.81M ﹤0.01% 1535
2019
Q2 		$4.35M Sell
22,311
-37,459
-63% -$8.08M ﹤0.01% 1411
2019
Q1 		$15.8M Buy
59,770
+20,270
+51% +$3.71M ﹤0.01% 1071
2018
Q4 		$7.89M Buy
39,500
+29,010
+277% +$8.84M ﹤0.01% 1252
2018
Q3 		$6.53M Buy
10,490
+1,814
+21% +$804K ﹤0.01% 1400
2018
Q2 		$2.97M Buy
+8,676
New +$3.13M ﹤0.01% 1626

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

Wellington Management Group's TECX Position: Q1 2026 in Review

Wellington Management Group reduced its Tectonic Therapeutic (TECX) stake by 22% in Q1 2026, selling an estimated $200K and leaving 29,240 shares worth $904K. The position accounts for ﹤0.01% of the portfolio, ranked #1692.

Wellington Management Group first reported a position in TECX in Q2 2018 and has held it in 17 quarters since. The position peaked at $16M in Q2 2020. 111 funds tracked by Wall St. Rank hold TECX as of Q1 2026.

  • Wellington Management Group held 29,240 shares of Tectonic Therapeutic worth $904K as of Q1 2026.
  • Wellington Management Group sold 8,139 Tectonic Therapeutic shares in Q1 2026, an estimated $200K.
  • Tectonic Therapeutic made up ﹤0.01% of Wellington Management Group's portfolio in Q1 2026, its #1692 holding.
  • Wellington Management Group first reported a position in Tectonic Therapeutic in Q2 2018 and has held it in 17 quarters since.
  • Wellington Management Group's Tectonic Therapeutic position peaked at $16M in Q2 2020.
  • 111 funds tracked by Wall St. Rank held Tectonic Therapeutic as of Q1 2026.

Based on Wellington Management Group's 13F filing for Q1 2026, filed 15 May 2026.