TECX — TECTONIC THERAPEUTIC INC
Reported value held$204.43M
Funds holding (latest)32
SectorHealth Care
Funds holding (Q2 2026)25
Institutional value$177.65M · 5.22M sh
New / Add / Cut / Exit1 / 14 / 7 / 1
Top-5 / Top-10 concentration83.6% / 94.8%
Institutional holdings change
Accumulating +1.8%
(+90.69K sh)
Institutional value change
Up +15.8%
As of Q2 2026, 25 SEC-registered investment managers reported holding TECX (TECTONIC THERAPEUTIC INC) in their latest 13F filings, with a combined reported value of $177.65M across 5.22M shares. That is +1.8% by share count (+90.69K shares) versus the previous quarter, while reported value moved +15.8%. Ownership is concentrated: the five largest holders account for 83.6% of reported value and the top ten for 94.8%.
Compared with the prior quarter, 1 opened new positions, 14 added to existing stakes, 7 trimmed, 1 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.
TECX is classified in the Health Care sector.
All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.
Q2 2026 — 25 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Fidelity Management & Research (FMR) history | 2.83M | $97.29M | 0.01% | Hold |
| BlackRock Inc history | 862.59K | $29.65M | 0.00% | Hold |
| Geode Capital Management history | 270.46K | $9.30M | 0.00% | Add |
| D. E. Shaw & Co history | 186.55K | $6.41M | 0.00% | Add |
| Marshall Wace history | 172.10K | $5.92M | 0.01% | Reduce |
| Millennium Management history | 165.53K | $5.69M | 0.00% | Add |
| Wells Fargo & Co history | 117.43K | $4.04M | 0.00% | Add |
| Northern Trust Corp history | 113.90K | $3.92M | 0.00% | Add |
| Citadel Advisors history | 107.39K | $3.69M | 0.00% | Add |
| Goldman Sachs Group history | 73.92K | $2.54M | 0.00% | Add |
| Morgan Stanley history | 65.37K | $2.25M | 0.00% | Add |
| JPMorgan Chase & Co history | 55.36K | $1.83M | 0.00% | New |
| Wellington Management Group history | 31.43K | $1.08M | 0.00% | Add |
| Charles Schwab Investment Management history | 30.44K | $1.05M | 0.00% | Add |
| BNY Mellon history | 25.25K | $867.87K | 0.00% | Add |
| UBS Group AG history | 15.05K | $517.52K | 0.00% | Reduce |
| Bank of America Corp history | 11.04K | $379.60K | 0.00% | Reduce |
| Deutsche Bank AG history | 10.04K | $345.14K | 0.00% | Add |
| AQR Capital Management history | 6.62K | $227.46K | 0.00% | Reduce |
| Invesco Ltd history | 6.39K | $219.59K | 0.00% | Reduce |
| Manulife Financial history | 6.00K | $206.11K | 0.00% | Reduce |
| Citigroup Inc history | 5.55K | $190.71K | 0.00% | Add |
| Legal & General Investment Management America history | 1.00K | $34.38K | 0.00% | Hold |
| T. Rowe Price Associates history | 48.00K | $1.65K | 0.00% | Reduce |
| PNC Financial Services history | 40 | $1.38K | 0.00% | Add |
Q1 2026 — 25 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Fidelity Management & Research (FMR) history | 2.82M | $87.06M | 0.01% | Hold |
| BlackRock Inc history | 860.35K | $26.59M | 0.00% | Add |
| Geode Capital Management history | 268.27K | $8.29M | 0.00% | Add |
| Marshall Wace history | 229.59K | $7.10M | 0.01% | Add |
| D. E. Shaw & Co history | 116.12K | $3.59M | 0.00% | Reduce |
| Wells Fargo & Co history | 112.66K | $3.48M | 0.00% | Reduce |
| Northern Trust Corp history | 78.35K | $2.42M | 0.00% | Add |
| Point72 Asset Management history | 68.60K | $2.12M | 0.00% | Reduce |
| Morgan Stanley history | 64.85K | $2.00M | 0.00% | Reduce |
| Goldman Sachs Group history | 62.43K | $1.93M | 0.00% | Reduce |
| Millennium Management history | 58.35K | $1.80M | 0.00% | Reduce |
| Citadel Advisors history | 52.40K | $1.62M | 0.00% | Reduce |
| UBS Group AG history | 29.99K | $926.90K | 0.00% | Reduce |
| Wellington Management Group history | 29.24K | $903.81K | 0.00% | Reduce |
| Charles Schwab Investment Management history | 29.11K | $899.79K | 0.00% | Reduce |
| BNY Mellon history | 24.76K | $765.34K | 0.00% | Reduce |
| AQR Capital Management history | 16.93K | $523.43K | 0.00% | New |
| Manulife Financial history | 13.93K | $430.55K | 0.00% | New |
| Bank of America Corp history | 11.47K | $354.41K | 0.00% | Add |
| Deutsche Bank AG history | 9.35K | $288.85K | 0.00% | Add |
| Invesco Ltd history | 7.67K | $237.23K | 0.00% | New |
| Citigroup Inc history | 1.15K | $35.45K | 0.00% | Add |
| Legal & General Investment Management America history | 1.00K | $30.91K | 0.00% | Reduce |
| T. Rowe Price Associates history | 164.06K | $5.07K | 0.00% | New |
| PNC Financial Services history | 26 | $804 | 0.00% | New |
Q4 2025 — 23 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Fidelity Management & Research (FMR) history | 2.81M | $58.56M | 0.00% | Hold |
| BlackRock Inc history | 854.36K | $17.82M | 0.00% | Add |
| Vanguard Group history | 599.90K | $12.51M | 0.00% | Add |
| Point72 Asset Management history | 492.33K | $10.27M | 0.01% | Add |
| Citadel Advisors history | 385.22K | $8.04M | 0.00% | Add |
| Millennium Management history | 300.82K | $6.28M | 0.00% | Add |
| Geode Capital Management history | 263.56K | $5.50M | 0.00% | Reduce |
| Wells Fargo & Co history | 120.41K | $2.51M | 0.00% | Add |
| D. E. Shaw & Co history | 120.25K | $2.51M | 0.00% | New |
| Morgan Stanley history | 94.44K | $1.97M | 0.00% | Reduce |
| Goldman Sachs Group history | 92.70K | $1.93M | 0.00% | Reduce |
| Northern Trust Corp history | 72.25K | $1.51M | 0.00% | Reduce |
| Wellington Management Group history | 37.38K | $779.73K | 0.00% | Hold |
| Charles Schwab Investment Management history | 32.46K | $677.14K | 0.00% | Hold |
| UBS Group AG history | 31.21K | $651.14K | 0.00% | Reduce |
| Marshall Wace history | 30.92K | $644.95K | 0.00% | Add |
| BNY Mellon history | 25.86K | $539.40K | 0.00% | Reduce |
| Bank of America Corp history | 9.22K | $192.43K | 0.00% | Add |
| Deutsche Bank AG history | 7.59K | $158.31K | 0.00% | New |
| CPP Investments history | 6.30K | $131.42K | 0.00% | New |
| JPMorgan Chase & Co history | 5.78K | $120.55K | 0.00% | Reduce |
| Legal & General Investment Management America history | 1.05K | $21.90K | 0.00% | Hold |
| Citigroup Inc history | 1.03K | $21.55K | 0.00% | Reduce |
Q3 2025 — 22 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Fidelity Management & Research (FMR) history | 2.81M | $44.04M | 0.00% | Hold |
| BlackRock Inc history | 827.85K | $12.99M | 0.00% | Add |
| Farallon Capital Management history | 640.00K | $10.04M | 0.04% | Reduce |
| Vanguard Group history | 569.48K | $8.94M | 0.00% | Reduce |
| Point72 Asset Management history | 421.75K | $6.62M | 0.01% | Add |
| Citadel Advisors history | 298.39K | $4.68M | 0.00% | Add |
| Geode Capital Management history | 269.35K | $4.23M | 0.00% | Reduce |
| Millennium Management history | 238.17K | $3.74M | 0.00% | Add |
| Morgan Stanley history | 104.73K | $1.64M | 0.00% | Reduce |
| Wells Fargo & Co history | 102.47K | $1.61M | 0.00% | Add |
| Goldman Sachs Group history | 96.87K | $1.52M | 0.00% | New |
| Renaissance Technologies history | 93.40K | $1.47M | 0.00% | Add |
| Northern Trust Corp history | 83.23K | $1.31M | 0.00% | Add |
| UBS Group AG history | 66.46K | $1.04M | 0.00% | Add |
| Wellington Management Group history | 37.36K | $586.21K | 0.00% | Add |
| Charles Schwab Investment Management history | 32.36K | $507.70K | 0.00% | Hold |
| BNY Mellon history | 26.13K | $410.03K | 0.00% | Add |
| Marshall Wace history | 25.08K | $393.44K | 0.00% | Add |
| Bank of America Corp history | 6.37K | $99.87K | 0.00% | Reduce |
| JPMorgan Chase & Co history | 5.92K | $92.95K | 0.00% | Reduce |
| Citigroup Inc history | 1.16K | $18.17K | 0.00% | Reduce |
| Legal & General Investment Management America history | 1.05K | $16.48K | 0.00% | Hold |
Q2 2025 — 23 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Fidelity Management & Research (FMR) history | 2.80M | $55.65M | 0.00% | Hold |
| Farallon Capital Management history | 853.05K | $16.95M | 0.07% | Hold |
| BlackRock Inc history | 761.30K | $15.13M | 0.00% | Add |
| Vanguard Group history | 584.39K | $11.61M | 0.00% | Add |
| Geode Capital Management history | 272.26K | $5.41M | 0.00% | Add |
| Point72 Asset Management history | 231.03K | $4.59M | 0.01% | New |
| Citadel Advisors history | 165.05K | $3.28M | 0.00% | Add |
| Morgan Stanley history | 160.43K | $3.19M | 0.00% | Reduce |
| Renaissance Technologies history | 86.99K | $1.73M | 0.00% | Reduce |
| Northern Trust Corp history | 79.07K | $1.57M | 0.00% | Add |
| Millennium Management history | 74.89K | $1.49M | 0.00% | Reduce |
| Wells Fargo & Co history | 72.77K | $1.45M | 0.00% | Add |
| UBS Group AG history | 34.24K | $680.31K | 0.00% | Add |
| Charles Schwab Investment Management history | 32.37K | $643.09K | 0.00% | New |
| Wellington Management Group history | 28.55K | $567.19K | 0.00% | Add |
| BNY Mellon history | 25.26K | $501.88K | 0.00% | New |
| Marshall Wace history | 10.68K | $212.17K | 0.00% | Reduce |
| Deutsche Bank AG history | 8.20K | $162.95K | 0.00% | New |
| Bank of America Corp history | 6.92K | $137.54K | 0.00% | Reduce |
| JPMorgan Chase & Co history | 6.55K | $130.11K | 0.00% | Add |
| Citigroup Inc history | 4.08K | $81.05K | 0.00% | Add |
| Legal & General Investment Management America history | 1.05K | $20.86K | 0.00% | New |
| T. Rowe Price Associates history | 18.32K | $365 | 0.00% | Add |
Q1 2025 — 20 funds
| Fund | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|
| Fidelity Management & Research (FMR) history | 2.80M | $49.58M | 0.00% | Add |
| Farallon Capital Management history | 853.05K | $15.11M | 0.08% | Add |
| Vanguard Group history | 361.17K | $6.40M | 0.00% | Hold |
| Millennium Management history | 237.94K | $4.21M | 0.00% | Add |
| BlackRock Inc history | 205.53K | $3.64M | 0.00% | Add |
| Morgan Stanley history | 164.24K | $2.91M | 0.00% | Add |
| Renaissance Technologies history | 144.30K | $2.56M | 0.00% | Add |
| Goldman Sachs Group history | 104.79K | $1.86M | 0.00% | Add |
| Citadel Advisors history | 93.47K | $1.63M | 0.00% | New |
| Geode Capital Management history | 79.49K | $1.41M | 0.00% | Add |
| Bank of America Corp history | 65.70K | $1.16M | 0.00% | Add |
| Marshall Wace history | 53.34K | $944.65K | 0.00% | New |
| Wells Fargo & Co history | 32.77K | $580.38K | 0.00% | Add |
| Wellington Management Group history | 19.66K | $348.18K | 0.00% | New |
| Northern Trust Corp history | 14.68K | $260.02K | 0.00% | Hold |
| UBS Group AG history | 11.23K | $198.83K | 0.00% | Add |
| Balyasny Asset Management history | 10.19K | $180.50K | 0.00% | Reduce |
| JPMorgan Chase & Co history | 1.12K | $19.87K | 0.00% | Reduce |
| Citigroup Inc history | 648 | $11.48K | 0.00% | Reduce |
| T. Rowe Price Associates history | 12.81K | $227 | 0.00% | New |
New Positions (Q2 2026)
- JPMorgan Chase & Co 55.36K sh · $1.83M
Fully Exited (vs previous quarter)
- Point72 Asset Management sold 68.60K sh · $2.12M
Fund Position History — shares by quarter (top 20 funds)
| Fund | Q2 2026 | Q1 2026 | Q4 2025 | Q3 2025 | Q2 2025 | Q1 2025 | Q4 2024 | Q3 2024 | Q2 2024 |
|---|---|---|---|---|---|---|---|---|---|
| Fidelity Management & Research (FMR) | 2.83M | 2.82M | 2.81M | 2.81M | 2.80M | 2.80M | 1.52M | 1.22M | 1.08M |
| BlackRock Inc | 862.59K | 860.35K | 854.36K | 827.85K | 761.30K | 205.53K | 195.06K | 123.03K | — |
| Geode Capital Management | 270.46K | 268.27K | 263.56K | 269.35K | 272.26K | 79.49K | 77.58K | 76.88K | 31.03K |
| D. E. Shaw & Co | 186.55K | 116.12K | 120.25K | — | — | — | — | — | — |
| Marshall Wace | 172.10K | 229.59K | 30.92K | 25.08K | 10.68K | 53.34K | — | — | — |
| Millennium Management | 165.53K | 58.35K | 300.82K | 238.17K | 74.89K | 237.94K | 28.79K | — | — |
| Wells Fargo & Co | 117.43K | 112.66K | 120.41K | 102.47K | 72.77K | 32.77K | 18.51K | 20.95K | 9.72K |
| Northern Trust Corp | 113.90K | 78.35K | 72.25K | 83.23K | 79.07K | 14.68K | 14.68K | 9.64K | — |
| Citadel Advisors | 107.39K | 52.40K | 385.22K | 298.39K | 165.05K | 93.47K | — | — | — |
| Goldman Sachs Group | 73.92K | 62.43K | 92.70K | 96.87K | — | 104.79K | 24.31K | — | — |
| Morgan Stanley | 65.37K | 64.85K | 94.44K | 104.73K | 160.43K | 164.24K | 17.41K | 13.32K | 13.19K |
| JPMorgan Chase & Co | 55.36K | — | 5.78K | 5.92K | 6.55K | 1.12K | 1.24K | 22 | 22 |
| Wellington Management Group | 31.43K | 29.24K | 37.38K | 37.36K | 28.55K | 19.66K | — | — | — |
| Charles Schwab Investment Management | 30.44K | 29.11K | 32.46K | 32.36K | 32.37K | — | 4.71K | — | — |
| BNY Mellon | 25.25K | 24.76K | 25.86K | 26.13K | 25.26K | — | — | — | — |
| UBS Group AG | 15.05K | 29.99K | 31.21K | 66.46K | 34.24K | 11.23K | 10.77K | 3 | — |
| Bank of America Corp | 11.04K | 11.47K | 9.22K | 6.37K | 6.92K | 65.70K | 129 | 162 | 236 |
| Deutsche Bank AG | 10.04K | 9.35K | 7.59K | — | 8.20K | — | — | — | — |
| AQR Capital Management | 6.62K | 16.93K | — | — | — | — | — | — | — |
| Invesco Ltd | 6.39K | 7.67K | — | — | — | — | 128.18K | — | — |
▲ Bought Low (fund opened/added, stock rose ≥5% next quarter) ▼ Sold High (fund reduced, stock fell ≥5% next quarter)
Drag / scroll to zoom · Default shows the most recent year · Annotations come from quarterly fund actions in 13F filings · Hover a marker for details