Jim Simons
TECX

Jim Simons’s Tectonic Therapeutic TECX Stock Holding History

Jim Simons’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
2025
Q4 		– Sell
-93,400
Closed -$1.47M – 3864
2025
Q3 		$1.47M Buy
93,400
+6,413
+7% +$132K ﹤0.01% 2275
2025
Q2 		$1.73M Sell
86,987
-57,315
-40% -$1.16M ﹤0.01% 2206
2025
Q1 		$2.56M Buy
144,302
+96,129
+200% +$3.13M ﹤0.01% 1850
2024
Q4 		$2.22M Sell
48,173
-8,724
-15% -$369K ﹤0.01% 1983
2024
Q3 		$1.72M Sell
56,897
-32,132
-36% -$587K ﹤0.01% 2119
2024
Q2 		$1.47M Buy
89,029
+15,015
+20% +$241K ﹤0.01% 2084
2024
Q1 		$1.14M Buy
74,014
+10,769
+17% +$171K ﹤0.01% 2405
2023
Q4 		$1.03M Buy
63,245
+20,039
+46% +$344K ﹤0.01% 2386
2023
Q3 		$798K Sell
43,206
-3,675
-8% -$65K ﹤0.01% 2454
2023
Q2 		$534K Sell
46,881
-900
-2% -$10.2K ﹤0.01% 2841
2023
Q1 		$573K Sell
47,781
-24,075
-34% -$335K ﹤0.01% 2811
2022
Q4 		$615K Sell
71,856
-29,989
-29% -$264K ﹤0.01% 2830
2022
Q3 		$785K Sell
101,845
-27,805
-21% -$309K ﹤0.01% 2645
2022
Q2 		$1.43M Buy
129,650
+55,892
+76% +$659K ﹤0.01% 2452
2022
Q1 		$1.17M Buy
73,758
+47,008
+176% +$971K ﹤0.01% 2630
2021
Q4 		$1.24M Sell
26,750
-7,008
-21% -$403K ﹤0.01% 2497
2021
Q3 		$2.26M Buy
33,758
+26,341
+355% +$2.16M ﹤0.01% 1994
2021
Q2 		$791K Buy
+7,417
New +$879K ﹤0.01% 2780
2021
Q1 		– Sell
-3,383
Closed -$566K – 3780
2020
Q4 		$566K Buy
3,383
+2,108
+165% +$375K ﹤0.01% 2765
2020
Q3 		$199K Sell
1,275
-1,769
-58% -$356K ﹤0.01% 3113
2020
Q2 		$637K Buy
+3,044
New +$627K ﹤0.01% 2777
2019
Q3 		– Sell
-1,325
Closed -$259K – 3764
2019
Q2 		$259K Buy
+1,325
New +$286K ﹤0.01% 3231

Other funds holding TECX

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Aberdeen Group
Aberdeen Group Edinburgh, United Kingdom $71.2B AUM 41.74% 1-Year Est. Return
B
Braidwell Stamford, Connecticut $3B AUM 46.72% 1-Year Est. Return
BBA
Baker Bros. Advisors New York $17.4B AUM 131.5% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
5VM
5AM Venture Management San Francisco, California $360M AUM 345.76% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
O
OrbiMed New York $5.05B AUM 125.28% 1-Year Est. Return
Point72 Asset Management
Point72 Asset Management Stamford, Connecticut $78.1B AUM 55.25% 1-Year Est. Return
VPC
Vestal Point Capital New York $3.58B AUM 189.12% 1-Year Est. Return

Jim Simons's TECX Position: Q4 2025 in Review

Jim Simons sold out of Tectonic Therapeutic (TECX) in Q4 2025, closing a stake of 93,400 shares — an estimated $1.47M sold.

Jim Simons first reported a position in TECX in Q2 2019 and held it in 22 quarters. The position peaked at $2.56M in Q1 2025. 105 funds tracked by Wall St. Rank hold TECX as of Q4 2025.

  • Jim Simons reported no remaining Tectonic Therapeutic position as of Q4 2025 after selling out during the quarter.
  • Jim Simons sold 93,400 Tectonic Therapeutic shares in Q4 2025, an estimated $1.47M.
  • Jim Simons first reported a position in Tectonic Therapeutic in Q2 2019 and held it in 22 quarters.
  • Jim Simons's Tectonic Therapeutic position peaked at $2.56M in Q1 2025.
  • 105 funds tracked by Wall St. Rank held Tectonic Therapeutic as of Q4 2025.

Based on Renaissance Technologies's 13F filing for Q4 2025, filed 12 Feb 2026.