What is SEC Form 13F? Ultimate Guide to Institutional Equity Filings
Learn how SEC Form 13F filings work, the $100M threshold, 45-day reporting lag, and how to track top hedge fund holdings.
CIK: 0001263508
Total reported value
$20.0B
$20.0B
84 檔
44.1%
During the Q1 2026 filing period, Baker Bros. Advisors LP (CIK: 0001263508) submitted its Form 13F report to the U.S. SEC, disclosing a tracked public equity portfolio valued at $20.0B across 84 reported positions.
In Q1 2026, Baker Bros. Advisors LP displayed an active expansion posture, initiating 7 new positions and adding to 18 existing holdings, outstripping position reductions.
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | INCY | Incyte CORP | Stock-Healthcare | 16.62% | +0.86% | +0.00% | |
| 2 | ONC | Beone Medicines Ltd-adr | Stock-Other | 15.00% | -2.43% | — | |
| 3 | INSM | Insmed Inc | Stock-Healthcare | 6.97% | -2.27% | +12.56% | |
| 4 | MDGL | Madrigal Pharmaceuticals Inc | Stock-Healthcare | 6.44% | -0.67% | — | |
| 5 | ACAD | Acadia Pharmaceuticals Inc | Stock-Healthcare | 5.48% | -0.04% | — | |
| 6 | RVMD | Revolution Medicines Inc | Stock-Healthcare | 5.34% | +5.40% | +1.06% | |
| 7 | CELC | Celcuity Inc | Stock-Other | 5.19% | -1.04% | — | |
| 8 | KOD | Kodiak Sciences Inc | Stock-Other | 4.36% | -0.47% | — | |
| 9 | KYMR | Kymera Therapeutics Inc | Stock-Other | 4.14% | +0.83% | — | |
| 10 | SMMT | Summit Therapeutics Inc | Stock-Other | 3.96% | -1.57% | — | |
| 11 | PRAX | Praxis Precision Medicines I | Stock-Other | 3.24% | -0.30% | +55.63% | |
| 12 | RYTM | Rhythm Pharmaceuticals Inc | Stock-Other | 2.80% | +0.32% | — | |
| 13 | ALKS | Alkermes plc | Stock-Healthcare | 2.03% | +0.60% | — | |
| 14 | GRAL | Grail Inc | Stock-Healthcare | 1.20% | +0.18% | +93.19% | |
| 15 | EWTX | Edgewise Therapeutics Inc | Stock-Other | 1.19% | -0.44% | — | |
| 16 | IONS | Ionis Pharmaceuticals Inc | Stock-Healthcare | 0.88% | -0.07% | +14.28% | |
| 17 | KNSA | Kiniksa Pharmaceuticals International, plc | Stock-Other | 0.78% | +0.13% | — | |
| 18 | IMVT | Immunovant Inc | Stock-Other | 0.78% | +0.27% | — | |
| 19 | ROIV | Roivant Sciences Ltd. | Stock-Healthcare | 0.77% | +0.07% | -12.37% | |
| 20 | IDYA | Ideaya Biosciences Inc | Stock-Other | 0.76% | +0.18% | +9.06% | |
| 21 | ARWR | Arrowhead Pharmaceuticals In | Stock-Healthcare | 0.72% | +0.09% | -8.40% | |
| 22 | STOK | Stoke Therapeutics Inc | Stock-Other | 0.62% | -0.07% | — | |
| 23 | ✓ | Immatics NV | Stock-Other | 0.62% | -0.14% | -9.74% | |
| 24 | ABCL | Abcellera Biologics Inc | Stock-Other | 0.61% | +0.69% | +9.99% | |
| 25 | ABVX | Abivax Sa-adr | Stock-Other | 0.56% | -0.56% | EXIT | |
| 26 | CRNX | Crinetics Pharmaceuticals In | Stock-Other | 0.49% | -0.05% | +42.61% | |
| 27 | REPL | Replimune Group Inc | Stock-Other | 0.49% | +0.12% | — | |
| 28 | CELC 2.75 08-01-31Bond | Celcuity Inc | Bond | 0.43% | -0.08% | — | |
| 29 | NRIX | Nurix Therapeutics Inc | Stock-Other | 0.41% | +0.16% | — | |
| 30 | DNLI | Denali Therapeutics Inc | Stock-Other | 0.41% | +0.07% | — | |
| 31 | DNTH | Dianthus Therapeutics Inc | Stock-Other | 0.41% | +0.01% | +7.90% | |
| 32 | GLUE | Monte Rosa Therapeutics Inc | Stock-Other | 0.41% | +0.12% | — | |
| 33 | GPCR | Structure Therapeutics Inc | Stock-Other | 0.40% | -0.01% | — | |
| 34 | TRDA | Entrada Therapeutics Inc | Stock-Other | 0.37% | -0.18% | — | |
| 35 | BCYC | Bicycle Therapeutics Plc-adr | Stock-Other | 0.29% | -0.06% | — | |
| 36 | SYRE | Spyre Therapeutics Inc | Stock-Other | 0.29% | -0.29% | EXIT | |
| 37 | RAPP | Rapport Therapeutics Inc | Stock-Other | 0.28% | +0.04% | — | |
| 38 | ALMS | Alumis Inc | Stock-Other | 0.25% | +0.03% | +28.80% | |
| 39 | MIRM | Mirum Pharmaceuticals Inc | Stock-Other | 0.24% | +0.02% | — | |
| 40 | VRDN | Viridian Therapeutics Inc | Stock-Other | 0.22% | — | — | |
| 41 | ELVN | Enliven Therapeutics Inc | Stock-Other | 0.20% | +0.03% | +233.52% | |
| 42 | PRLD | Prelude Therapeutics Inc | Stock-Other | 0.20% | +0.07% | — | |
| 43 | DBVT | Dbv Technologies Sa-spon Adr | Stock-Other | 0.18% | -0.06% | — | |
| 44 | DSGN | Design Therapeutics Inc | Stock-Other | 0.16% | +0.03% | +15.80% | |
| 45 | 260 | Centessa Pharmaceuticals-adr | Stock-Other | 0.15% | -0.15% | EXIT | |
| 46 | CTMX | Cytomx Therapeutics Inc | Stock-Other | 0.13% | -0.04% | +17.06% | |
| 47 | JBIO | Jade Biosciences Inc | Stock-Other | 0.13% | +0.01% | — | |
| 48 | IRON | Disc Medicine Inc | Stock-Other | 0.13% | — | +3.74% | |
| 49 | IMCR | Immunocore Holdings Plc-adr | Stock-Other | 0.13% | -0.13% | EXIT | |
| 50 | XENE | Xenon Pharmaceuticals Inc | Stock-Other | 0.12% | -0.01% | — |
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | PRAX | Praxis Precision Medicines I | +1.3% | +55.63% | Add |
| 2 | KOD | Kodiak Sciences Inc | +1.1% | — | Unchanged |
| 3 | RVMD | Revolution Medicines Inc | +0.9% | +1.06% | Add |
| 4 | CELC | Celcuity Inc | +0.6% | — | Unchanged |
| 5 | ALKS | Alkermes plc | +0.4% | — | Unchanged |
| 6 | INSM | Insmed Inc | +0.3% | +12.56% | Add |
| 7 | SMMT | Summit Therapeutics Inc | +0.2% | — | Unchanged |
| 8 | EWTX | Edgewise Therapeutics Inc | +0.2% | — | Unchanged |
| 9 | DNTH | Dianthus Therapeutics Inc | +0.2% | +7.90% | Add |
| 10 | KYMR | Kymera Therapeutics Inc | +0.2% | — | Unchanged |
| 11 | ELVN | Enliven Therapeutics Inc | +0.2% | +233.52% | Add |
| 12 | ALMS | Alumis Inc | +0.2% | +28.80% | Add |
| 13 | GRAL | Grail Inc | +0.2% | +93.19% | Add |
| 14 | KNSA | Kiniksa Pharmaceuticals International, plc | +0.1% | — | Unchanged |
| 15 | SYRE | Spyre Therapeutics Inc | +0.1% | — | Unchanged |
| 16 | ROIV | Roivant Sciences Ltd. | +0.1% | -12.37% | Trim |
| 17 | TRDA | Entrada Therapeutics Inc | +0.1% | — | Unchanged |
| 18 | ABCL | Abcellera Biologics Inc | +0.1% | +9.99% | Add |
| 19 | IONS | Ionis Pharmaceuticals Inc | +0.1% | +14.28% | Add |
| 20 | DNLI | Denali Therapeutics Inc | +0.1% | — | Unchanged |
| 21 | 260 | Centessa Pharmaceuticals-adr | +0.1% | — | Unchanged |
| 22 | CRNX | Crinetics Pharmaceuticals In | 0% | +42.61% | Add |
| 23 | CELC 2.75 08-01-31Bond | Celcuity Inc | 0% | — | Unchanged |
| 24 | DSGN | Design Therapeutics Inc | 0% | +15.80% | Add |
| 25 | IDYA | Ideaya Biosciences Inc | 0% | +9.06% | Add |
| 26 | PRLD | Prelude Therapeutics Inc | 0% | — | Unchanged |
| 27 | CTMX | Cytomx Therapeutics Inc | 0% | +17.06% | Add |
| 28 | XENE | Xenon Pharmaceuticals Inc | 0% | — | Unchanged |
| 29 | DBVT | Dbv Technologies Sa-spon Adr | 0% | — | Unchanged |
| 30 | GLUE | Monte Rosa Therapeutics Inc | 0% | — | Unchanged |
| 31 | CLDX | Celldex Therapeutics Inc | 0% | — | Unchanged |
| 32 | RCUS | Arcus Biosciences Inc | 0% | +53.93% | Add |
| 33 | CTNM | Contineum Therapeutics Inc-a | 0% | — | Unchanged |
| 34 | RLAY | Relay Therapeutics Inc | 0% | — | Unchanged |
| 35 | RAPP | Rapport Therapeutics Inc | 0% | — | Unchanged |
| 36 | STOK | Stoke Therapeutics Inc | — | — | Unchanged |
| 37 | ABSI | Absci CORP | — | — | Unchanged |
| 38 | MPLT | Maplight Therapeutics Inc | — | — | Unchanged |
| 39 | SGMT | Sagimet Biosciences Inc-a | — | — | Unchanged |
| 40 | LBRX | Lb Pharmaceuticals Inc | — | — | Unchanged |
| 41 | SANA | Sana Biotechnology Inc | — | — | Unchanged |
| 42 | PHVS | Pharvaris N.V. | — | — | Unchanged |
| 43 | ALGS | Aligos Therapeutics Inc | — | — | Unchanged |
| 44 | TYRA | Tyra Biosciences Inc | — | — | Unchanged |
| 45 | SKYE | Skye Bioscience Inc | — | +8.59% | Add |
| 46 | TARA | Protara Therapeutic Inc | — | — | Unchanged |
| 47 | WVE | Wave Life Sciences Ltd. | — | +139.10% | Add |
| 48 | TECX | Tectonic Therapeutic Inc | — | -32.72% | Trim |
| 49 | VTVT | Vtv Therapeutics Inc- Cl A | — | — | Unchanged |
| 50 | TCRX | Tscan Therapeutics Inc | — | — | Unchanged |
According to official SEC Form 13F filings, Baker Bros. Advisors LP reported a total U.S. public equity portfolio value of $20.0B across 84 disclosed positions in Q1 2026.
Expert Analysis & Guides for Tracking Wall Street Smart Money Movements
Learn how SEC Form 13F filings work, the $100M threshold, 45-day reporting lag, and how to track top hedge fund holdings.
In terms of portfolio concentration, the top 5 core holdings (including INCY, ONC, INSM) accounted for 44.1% of total reported equity market value during Q1 2026.
Top New Position Initiated
MIRM
市值: $41.2M
Top Position Liquidated / Trimmed
RARE
前期市值: $63.8M
During Q1 2026, Baker Bros. Advisors LP's top holdings by market value included INCY (16.6%)、ONC (15.0%)、INSM (7.0%). The largest single position, INCY, represented 16.6% of total portfolio value.
In Q1 2026, Baker Bros. Advisors LP made 40 total portfolio adjustments, initiating 7 new buys, adding to 18 positions, trimming 6 holdings, and fully liquidating 9 stocks.
All holding records on this page are fetched directly from the U.S. Securities and Exchange Commission (SEC) EDGAR system (Form 13F-HR). AlphaSMO parses CUSIP identifiers and formats data into Schema.org-compliant datasets.
Understand SEC Form 4 insider disclosures for corporate officers, directors, and 10% owners to track executive transactions.
Understand Rule 144 restricted stock sale notices to spot planned insider liquidations before market sell pressure arrives.
Explore the 5% beneficial ownership threshold, 13D vs 13G filing differences, and recent SEC accelerated deadline rules.
Best practices for analyzing 13F quarterly changes without getting misled by stock splits, options, or market valuation drift.
Learn how AlphaSMO's flagship signal detects high-conviction stocks where 13F hedge funds and corporate insiders buy at the same time.