Filer Snapshot

BAKER BROS. ADVISORS LP

CIK 0001263508. SEC filing timeline plus parsed ownership intelligence from 13F, 13D/G, and Forms 3/4/5 where available.

Entity type

Company

Total filings

97

Latest filing

15 Jun 2026

Industry

n/a

Filing-backed research brief

Start with the SEC data that changes for this CIK

Latest signal: 13F-HR for Q1 2026. Each card links back to the PortfolioSavvy page where the filing evidence is closest.

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Largest parsed holding

INCY

$2.89B reported value

Open holding

13D/G large stake

ONC

11 Jun 2026 · 8% ownership

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Source: SEC Schedule 13D/G

SCHEDULE 13D/A filed on 15 Jun 2026 for CIK 0001263508.

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Ownership signals CIK-linked ownership evidence from parsed SEC filings. 1 signal
Parsed SEC ownership signals

Parsed SEC ownership coverage

These bars compare filing-backed value available in each disclosure family. Read them as separate lenses, not as one combined ownership total.

13F portfolio$17.42B

Quarterly institutional holdings reported on Form 13F; not total AUM.

Forms 3/4/5 positions$9.83B

Reporting-owner positions with enough filing detail to estimate value.

Latest reported 13F value

13F
$17.42B

Reported market value from the latest parsed Form 13F information table; this is not total assets under management.

Source: SEC Form 13FScope: U.S.-listed equity holdings

Forms 3/4/5 position value

3/4/5
$9.83B

Estimated from parsed Forms 3/4/5 when filings include enough share and price data.

Source: Forms 3/4/5Confidence: Estimated when price data is available

Largest 13F holdings

13F
INCY ONC INSM MDGL ACAD
+15 moreRVMD CELC KOD KYMR SMMT PRAX RYTM ALKS GRAL EWTX IONS KNSA IMVT ROIV IDYA

Largest symbols in the latest parsed Form 13F information table.

Freshness: Latest parsed 13F period

Largest linked holdings

Largest issuer positions linked to this CIK across parsed 13F, 13D/G, and Forms 3/4/5 records.

INCY ONC KYMR MDGL ACAD DNLI KOD CELC
+9 moreBCYC KNSA REPL PRLD IMCR TRDA BCEL KALA NGNE

Largest 13F holdings

Largest symbols in the latest parsed Form 13F information table.

INCY ONC INSM MDGL ACAD RVMD CELC KOD
+12 moreKYMR SMMT PRAX RYTM ALKS GRAL EWTX IONS KNSA IMVT ROIV IDYA

Largest active 13D stakes

Active large-stake positions disclosed in parsed Schedule 13D filings.

ONC INCY ACAD CELC KYMR DBVT
+7 moreKOD KNSA REPL PRLD SERA KALA IGMS

Largest active 13G stakes

Passive or institutional large-stake positions disclosed in parsed Schedule 13G filings.

RVMD PRAX RYTM ALKS GRAL GLUE
+11 moreNRIX ABCL STOK IMTX EWTX CELC NGNE CERS CADL KALA BMEA
How to read these SEC ownership signals
  • Read each filing family separately: Form 13F, Schedules 13D/G, and Forms 3/4/5 answer different SEC disclosure questions and should not be blended into one ownership total.
  • Use 13F values for visible U.S.-listed equity portfolios, 13D/G rows for large beneficial-owner stakes, and Forms 3/4/5 rows for reporting-owner positions and transactions.
  • Open the linked research path when you need the filing, CIK, issuer, CUSIP, date, or source trail behind a value.
At a glance Names, identifiers, and filing context for this profile. 1 identity field
Business address
860 Washington Street, 3 Rd Floor, New York, NY, 10014
EDGAR profile Static EDGAR fields kept behind disclosure so the main profile stays readable. 3 profile fields available
Incorporated in
DE
Fiscal year end
31 December
Former names on EDGAR
BAKER BROS ADVISORS LLC (to 03 Jul 2013)

Filer intelligence

What SEC filings say about BAKER BROS. ADVISORS LP

A compact read of parsed XML filings. 13F, 13D/G, and Forms 3/4/5 are shown separately because they answer different ownership questions.

Open 13F portfolio Save filer

Quick read

  • Latest parsed 13F shows $17.42B across 84 reported holdings for Q1 2026.
  • Largest parsed 13F holding: INCY at $2.89B.
  • 5 recent 13D/G stake rows found; top row is ONC at 8% ownership.
  • Forms 3/4/5 show insider context for INCY worth $2.68B.

SEC source mix

Counts show available parsed rows, not one combined ownership total.

XML parsed
13F portfolio 84 rows

Quarterly institutional portfolio holdings.

Open
13D/G stakes 5 rows

Beneficial ownership and large-stake disclosures.

Open
Forms 3/4/5 5 rows

Officer, director, and 10% owner holdings or transactions.

Open

Top parsed 13F holdings

Visual share of the latest parsed 13F portfolio. Values are reported market value, not a recommendation.

Q1 2026 - 15 May 2026

Top 5 concentration

51%

Share of latest parsed 13F value represented by the visible holdings below.

Top 5 reported value

$8.8B

Compared with $17.42B total 13F value.

Top 5 net change

+$135.49M

Position-value change inside the visible top holdings only.

13F concentration map

A simple visual split of the latest parsed 13F portfolio.

Largest add: PRAX · Largest trim: Celcuity Inc.

INCY ONC INSM MDGL ACAD Other holdings

INCY

16.6%

Incyte Corporation

$2.89B

ONC

15%

BeOne Medicines Ltd.

$2.61B

INSM

7%

Insmed Incorporated

$1.21B

MDGL

6.4%

Madrigal Pharmaceuticals, Inc.

$1.12B

ACAD

5.5%

ACADIA Pharmaceuticals Inc.

$954.88M

13D/G large-stake context

ONC

11 Jun 2026 · Ordinary Shares, par value $0.0001 per share

8%
Issuer page 13D/G history

KNSA

21 May 2026 · Class A Ordinary Shares, nominal value $0.000273235 per share

7%
Issuer page 13D/G history

INCY

07 May 2026 · Common Stock, $0.001 par value per share

16%
Issuer page 13D/G history

ABCL

30 Apr 2026 · Common Shares, no par value per share

11%
Issuer page 13D/G history

Forms 3/4/5 insider context

INCY

30 Jun 2026 · 10% owner

$2.68B
Issuer page Owner page

ONC

11 Jun 2026

$2.15B
Issuer page Owner page

KYMR

24 Jun 2026 · 10% owner

$1.13B
Issuer page Owner page

MDGL

17 Jun 2026

$1.02B
Issuer page Owner page

Latest update

What changed recently for BAKER BROS. ADVISORS LP

Ownership report updated

Latest ownership report period: 30 Jun 2026. Open the source-backed page to inspect the fresh filing or facts context.

Update date

02 Jul 2026

Page type

Ownership filings

Latest period

30 Jun 2026

Ownership context was refreshed from SEC Forms 3/4/5 filed on 02 Jul 2026.

Open ownership filings Browse recent public updates

Benchmark Context

Benchmark context for this company

BAKER BROS. ADVISORS LP has a source-backed company facts view where you can compare the latest reported metrics with its own recent history and with peer rankings for the same metric.

Compared with

Start on the facts page for period-to-period context, then open a metric ranking when you want to compare the same reported fact across other SEC-reporting companies.

Why this is notable

Latest ownership report period: 30 Jun 2026. That gives you a fresh baseline before you compare this company with peers.

  • Peer comparisons stay conservative: same metric, compatible units, latest valid company row only.
  • Open the facts page first if you want the cleanest path to verification.

Benchmark context is only shown where the app has enough comparable SEC-backed data to keep the interpretation honest.

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SEC filing record

CIK 0001263508 filing coverage

Start with this filing record, then use the linked ownership pages when parsed 13F, 13D/G, Forms 3/4/5, or facts data exists for this CIK.

SEC filings
97
First seen
14 Feb 2014
Latest filing
15 Jun 2026
Entity
Company

Observed form types

13F-HR SCHEDULE 13D SCHEDULE 13D/A SCHEDULE 13G SCHEDULE 13G/A

CIK-linked evidence first

BAKER BROS. ADVISORS LP SEC filings BAKER BROS. ADVISORS LP 13F portfolio BAKER BROS. ADVISORS LP 13D/G history BAKER BROS. ADVISORS LP owner filings Open SEC filing index

Latest Filings

Showing the latest 12 of 97 SEC filings for BAKER BROS. ADVISORS LP.

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SCHEDULE 13D/A

SCHEDULE 13D/A filing

Filing date
15 Jun 2026
Reporting date
Not listed
SEC evidence
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SCHEDULE 13D/A

SCHEDULE 13D/A filing

Filing date
26 May 2026
Reporting date
Not listed
SEC evidence
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SCHEDULE 13G/A

SCHEDULE 13G/A filing

Filing date
15 May 2026
Reporting date
Not listed
SEC evidence
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SCHEDULE 13G/A

SCHEDULE 13G/A filing

Filing date
15 May 2026
Reporting date
Not listed
SEC evidence
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SCHEDULE 13G/A

SCHEDULE 13G/A filing

Filing date
15 May 2026
Reporting date
Not listed
SEC evidence
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SCHEDULE 13G

SCHEDULE 13G filing

Filing date
15 May 2026
Reporting date
Not listed
SEC evidence
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13F-HR

13F-HR filing

Filing date
15 May 2026
Reporting date
31 Mar 2026
SEC evidence
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SCHEDULE 13D/A

SCHEDULE 13D/A filing

Filing date
11 May 2026
Reporting date
Not listed
SEC evidence
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SCHEDULE 13G/A

SCHEDULE 13G/A filing

Filing date
07 May 2026
Reporting date
Not listed
SEC evidence
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SCHEDULE 13D/A

SCHEDULE 13D/A filing

Filing date
22 Apr 2026
Reporting date
Not listed
SEC evidence
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SCHEDULE 13D/A

SCHEDULE 13D/A filing

Filing date
16 Apr 2026
Reporting date
Not listed
SEC evidence
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SCHEDULE 13D/A

SCHEDULE 13D/A filing

Filing date
24 Mar 2026
Reporting date
Not listed
SEC evidence
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