Simplex Trading
TECX

Simplex Trading’s Tectonic Therapeutic TECX Stock Holding History

Simplex Trading’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 		$114K Sell
3,700
-1,800
-33% -$44.3K ﹤0.01% 4927
2025
Q4 		$115K Buy
5,500
+3,600
+189% +$66.9K ﹤0.01% 4858
2025
Q3 		$29K Buy
1,900
+400
+27% +$8.26K ﹤0.01% 7021
2025
Q2 		$29K Buy
+1,500
New +$30.4K ﹤0.01% 6448
2024
Q1 		– Sell
-325
Closed -$5K – 10101
2023
Q4 		$5K Sell
325
-1,033
-76% -$17.7K ﹤0.01% 7915
2023
Q3 		$25K Buy
1,358
+1,208
+805% +$21.4K ﹤0.01% 6444
2023
Q2 		$1K Buy
+150
New +$1.7K ﹤0.01% 8759
2022
Q2 		– Sell
-775
Closed -$12K – 11309
2022
Q1 		$12K Hold
775
– – ﹤0.01% 8758
2021
Q4 		$35K Buy
775
+583
+304% +$33.5K ﹤0.01% 7710
2021
Q3 		$21K Hold
192
– – ﹤0.01% 8419
2021
Q2 		$20K Buy
192
+178
+1,271% +$21.1K ﹤0.01% 8600
2021
Q1 		$209K Buy
14
+11
+367% +$1.79K ﹤0.01% 4678
2020
Q4 		$44K Buy
+3
New +$533 ﹤0.01% 6323
2020
Q3 		– Hold
0
– -$6K – 8673
2020
Q2 		– Hold
0
– – – 6917

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

Simplex Trading's TECX Position: Q1 2026 in Review

Simplex Trading reduced its Tectonic Therapeutic (TECX) stake by 85% in Q1 2026, selling an estimated $192K and leaving 1,351 shares worth $41.8K. The position accounts for ﹤0.01% of the portfolio, ranked #6065.

Simplex Trading first reported a position in TECX in Q3 2020 and has held it in 9 quarters since. The position peaked at $191K in Q4 2025. 111 funds tracked by Wall St. Rank hold TECX as of Q1 2026.

  • Simplex Trading held 1,351 shares of Tectonic Therapeutic worth $41.8K as of Q1 2026.
  • Simplex Trading sold 7,791 Tectonic Therapeutic shares in Q1 2026, an estimated $192K.
  • Tectonic Therapeutic made up ﹤0.01% of Simplex Trading's portfolio in Q1 2026, its #6065 holding.
  • Simplex Trading first reported a position in Tectonic Therapeutic in Q3 2020 and has held it in 9 quarters since.
  • Simplex Trading's Tectonic Therapeutic position peaked at $191K in Q4 2025.
  • 111 funds tracked by Wall St. Rank held Tectonic Therapeutic as of Q1 2026.

Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.