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RIA / WealthRegistered adviserasset managerSEC registeredRAUM 10b 100b

BAKER BROTHERS INVESTMENTS

BAKER BROS. ADVISORS LP, CRD 158149

NEW YORK, NY

This is the graph view. The full profile, with its team, deals and sources, is on RIA / Wealth Management.Open the full profile →

Search this name across graphsid dfx:ria:35c152f5-9404-6110-05d6-ae16904a2a8d

Data as of Mar 27, 2026 (this record's last observation) from federal regulator filings. Page built Sep 21, 2026, 5:05 PM UTC and rebuilt at most every 15 minutes.

Relationships: 14
Dated events: 5
On other graphs: 0
Observed: Feb 13, 2012 to Mar 27, 2026
27 observations

Across DFX

This entity has not been resolved onto another DFX graph by a shared identifier. A name match elsewhere would be a candidate, never an identity, and none is recorded.

Facts

fact = as filed or announced; derived = computed by DFX; estimate = a band, never a point

Firm class: asset managerderivedprivate_client_share=0.0 fund_share=1.0 institutional_share=0.0 related_bd=false related_bank=false bd_reps=0.0
Regulatory AUM: $28BItem 5.F on the latest filing (2026-03-27); as reported, and an affiliate's assets may be counted again on its own filing
Discretionary RAUM: $28B
Private client RAUM: $0derivedItem 5.D individuals plus high net worth individuals
Private client share: 0%derivedprivate client RAUM over total RAUM
Advisors on IAPD: 0
Employees: 60
Advisory employees: 17
Offices: 1Schedule D 1.F, beyond the principal office
Accounts: 2
Private funds: 2Schedule D 7.B(1)
Custody, client assets: $0
SEC number: 801-73446
CIK: 1263508
CRD: 158149
Filings on the tape: 27
First filed: Feb 13, 2012
Latest filed: Mar 27, 2026
Organised: Limited Partnership, DE

Private funds

Schedule D 7.B(1); gross asset value as reported, never fund size; reporting ends 2024-12-31

Fund	Type	Reported GAV	As of	Owners	First reported	Status	Form D file
BAKER BROTHERS LIFE SCIENCES, L.P.	Hedge Fund	$20B	Mar 28, 2024	330	Feb 13, 2012	reported	021-486894
667, L.P.	Hedge Fund	$1.5B	Mar 28, 2024	9	Feb 13, 2012	reported	n/a
14159, L.P.	Hedge Fund	$17.0M	Mar 25, 2020	9	Feb 13, 2012	dropped	n/a
BAKER/TISCH INVESTMENTS L.P.	Hedge Fund	$11.0M	Mar 18, 2019	6	Feb 13, 2012	dropped	n/a
BAKER BROS. INVESTMENTS, L.P.	Hedge Fund	$9.8M	Mar 18, 2019	3	Feb 13, 2012	dropped	n/a
BAKER BIOTECH FUND II(A), L.P.	Hedge Fund	$9.4M	Mar 19, 2015	4	Feb 13, 2012	dropped	n/a
BAKER BROS. INVESTMENTS II, L.P.	Hedge Fund	$1.2M	Mar 18, 2019	2	Feb 13, 2012	dropped	n/a

Owners and control persons

Schedule A and B as filed; ownership codes are the form's bands (NA under 5%, A 5 to 10%, B 10 to 25%, C 25 to 50%, D 50 to 75%, E over 75%); people are listed as filed and never merged by name

Owner	Title	Ownership code	Control person	Acquired	First seen	Last seen
BAKER BROS. ADVISORS (GP), LLC	GENERAL PARTNER	Na	yes	01/2000	Mar 28, 2017	Mar 28, 2024
BAKER, FELIX, JAMES	MANAGING MEMBER	D	yes	01/2000	Feb 13, 2012	Mar 28, 2024
BAKER, FELIX, JAMES	LIMITED PARTNER	C	yes	01/2000	Feb 13, 2012	Mar 28, 2024
BAKER, JULIAN, CHARLES	LIMITED PARTNER	C	yes	01/2000	Feb 13, 2012	Mar 28, 2024
BAKER, JULIAN, CHARLES	MANAGING MEMBER	D	yes	01/2000	Feb 13, 2012	Mar 28, 2024
LESSING, SCOTT, LAWRENCE	PRESIDENT, CHIEF COMPLIANCE OFFICER	Na	yes	02/2011	Feb 13, 2012	Mar 28, 2024
TOOHEY, ALEXANDRA, ANN	CHIEF FINANCIAL OFFICER	Na	yes	01/2014	Mar 31, 2014	Mar 28, 2024

Affiliates (Item 7.A)

as filed on Item 7.A; a related person with a CRD on the graph links to its own page

Related person	Type	Class on the graph	Its RAUM	Control	Common control	State
BAKER BIOTECH CAPITAL, L.P.	n/a	n/a	n/a	N	yes	n/a
BAKER BROTHERS LIFE SCIENCES CAPITAL, L.P.	n/a	n/a	n/a	N	yes	n/a

Offices

Schedule D 1.F offices beyond the principal office; street addresses are not published

City	State	Country	Employees	Also broker-dealer
Bridgehampton	NY	United States	14	no

Regulatory AUM by fiscal year

annual amendments (and the roster's annual snapshot) as filed; where a year was amended twice the later filing draws the line

Fiscal year	Filed	RAUM	Discretionary	Employees	Advisory staff	Offices	Private funds	Fund GAV
2025	Mar 27, 2026	$28B	$28B	60	17	1	2	n/a
2024	Mar 28, 2025	$18B	$18B	56	19	1	2	n/a
2023	Mar 28, 2024	$22B	$22B	52	18	1	2	$22B
2022	Mar 24, 2023	$23B	$23B	50	14	1	2	$23B
2021	Mar 28, 2022	$26B	$26B	50	15	1	2	$26B
2020	Mar 30, 2021	$36B	$36B	48	15	1	2	$36B
2019	Mar 25, 2020	$24B	$24B	40	16	1	3	$24B
2018	Mar 18, 2019	$17B	$17B	40	16	1	6	$17B
2017	Mar 29, 2018	$15B	$15B	35	13	1	6	$15B
2016	Mar 28, 2017	$16B	$16B	32	13	n/a	6	$16B
2015	Feb 25, 2016	$12B	$12B	31	13	n/a	6	$11B
2014	Mar 10, 2015	$11B	$11B	27	12	n/a	7	$11B
2013	Mar 31, 2014	$8.2B	$8.2B	25	11	n/a	7	$8.2B
2012	Mar 21, 2013	$4.4B	$4.4B	26	11	n/a	7	$4.4B

Growth

derived from consecutive annual filings; RAUM as reported

Latest fiscal year	RAUM	A year earlier	1y change	Three years earlier	3y CAGR	Employees	A year earlier	Offices	A year earlier
2025	$28B	$18B	56.2%	$23B	6.7%	60	56	1	1

Relationships

Advises (7)

→ 667, L.P.Private fundHedge Fund, IA
Feb 13, 2012 to presentfactForm ADV
→ BAKER BROTHERS LIFE SCIENCES, L.P.Private fundHedge Fund, IA
Feb 13, 2012 to presentfactForm ADV
→ 14159, L.P.Private fundHedge Fund, IA, no longer reported
Feb 13, 2012 to Mar 25, 2020factForm ADV
→ BAKER BROS. INVESTMENTS II, L.P.Private fundHedge Fund, IA, no longer reported
Feb 13, 2012 to Mar 18, 2019factForm ADV
→ BAKER/TISCH INVESTMENTS L.P.Private fundHedge Fund, IA, no longer reported
Feb 13, 2012 to Mar 18, 2019factForm ADV
→ BAKER BROS. INVESTMENTS, L.P.Private fundHedge Fund, IA, no longer reported
Feb 13, 2012 to Mar 18, 2019factForm ADV
→ BAKER BIOTECH FUND II(A), L.P.Private fundHedge Fund, IA, no longer reported
Feb 13, 2012 to Mar 19, 2015factForm ADV

Controls (5)

← BAKER, JULIAN, CHARLESOwnerMANAGING MEMBER, ownership code D, individual
Feb 13, 2012 to Mar 28, 2024factForm ADV
← LESSING, SCOTT, LAWRENCEOwnerPRESIDENT, CHIEF COMPLIANCE OFFICER, ownership code NA, individual
Feb 13, 2012 to Mar 28, 2024factForm ADV
← TOOHEY, ALEXANDRA, ANNOwnerCHIEF FINANCIAL OFFICER, ownership code NA, individual
Mar 31, 2014 to Mar 28, 2024factForm ADV
← BAKER, FELIX, JAMESOwnerMANAGING MEMBER, ownership code D, individual
Feb 13, 2012 to Mar 28, 2024factForm ADV
← BAKER BROS. ADVISORS (GP), LLCOwnerGENERAL PARTNER, ownership code NA, domestic entity
Mar 28, 2017 to Mar 28, 2024factForm ADV

Dated events

Occurred
Mar 27, 2026
Regulatory AUM changed
Baker Brothers Investments reported RAUM $28.1B, up 56% from $18.0B (2025-03-28 to 2026-03-27)
Form ADVobserved 6 days ago
$10.1B
Occurred
Mar 28, 2022
Regulatory AUM changed
Baker Brothers Investments reported RAUM $25.7B, down 28% from $35.8B (2021-03-30 to 2022-03-28)
Form ADVobserved 6 days ago
$-10.1B
Occurred
Mar 30, 2021
Regulatory AUM changed
Baker Brothers Investments reported RAUM $35.8B, up 52% from $23.6B (2020-03-25 to 2021-03-30)
Form ADVobserved 6 days ago
$12.2B
Occurred
Mar 25, 2020
Regulatory AUM changed
Baker Brothers Investments reported RAUM $23.6B, up 36% from $17.3B (2019-03-18 to 2020-03-25)
Form ADVobserved 6 days ago
$6.3B
Occurred
Aug 2, 2013
Succession filed (Item 4)
Baker Brothers Investments reported succeeding to the business of Another Adviser (Form ADV Item 4)
Form ADVobserved 6 days ago

Provenance

Graph: RIA / Wealth Management
Canonical id: dfx:ria:35c152f5-9404-6110-05d6-ae16904a2a8d
First observed: Feb 13, 2012
Last observed: Mar 27, 2026 5 months ago
Source families: Federal regulator filings
3 registered feeds stand behind this record; each fact above carries its own dates and, where the publisher serves one, its document.
Resolution: Identity across graphs by shared identifier (CRD, CIK, EIN, ADV fund id, individual CRD) or citation; a name match is shown as a candidate and never merged.

BAKER BROTHERS INVESTMENTS

BAKER BROS. ADVISORS LP, CRD 158149

NEW YORK, NY

This is the graph view. The full profile, with its team, deals and sources, is on RIA / Wealth Management.Open the full profile →

Search this name across graphsid dfx:ria:35c152f5-9404-6110-05d6-ae16904a2a8d

Data as of Mar 27, 2026 (this record's last observation) from federal regulator filings. Page built Sep 21, 2026, 5:05 PM UTC and rebuilt at most every 15 minutes.

Fund

Type

Reported GAV

As of

Owners

First reported

Status

Form D file

BAKER BROTHERS LIFE SCIENCES, L.P.

Hedge Fund

$20B

Mar 28, 2024

330

Feb 13, 2012

reported

021-486894

667, L.P.

Hedge Fund

$1.5B

Mar 28, 2024

Feb 13, 2012

reported

n/a

14159, L.P.

Hedge Fund

$17.0M

Mar 25, 2020

Feb 13, 2012

dropped

n/a

BAKER/TISCH INVESTMENTS L.P.

Hedge Fund

$11.0M

Mar 18, 2019

Feb 13, 2012

dropped

n/a

BAKER BROS. INVESTMENTS, L.P.

Hedge Fund

$9.8M

Mar 18, 2019

Feb 13, 2012

dropped

n/a

BAKER BIOTECH FUND II(A), L.P.

Hedge Fund

$9.4M

Mar 19, 2015

Feb 13, 2012

dropped

n/a

BAKER BROS. INVESTMENTS II, L.P.

Hedge Fund

$1.2M

Mar 18, 2019

Feb 13, 2012

dropped

n/a

Owner

Title

Ownership code

Control person

Acquired

First seen

Last seen

BAKER BROS. ADVISORS (GP), LLC

GENERAL PARTNER

yes

01/2000

Mar 28, 2017

Mar 28, 2024

BAKER, FELIX, JAMES

MANAGING MEMBER

yes

01/2000

Feb 13, 2012

Mar 28, 2024

BAKER, FELIX, JAMES

LIMITED PARTNER

yes

01/2000

Feb 13, 2012

Mar 28, 2024

BAKER, JULIAN, CHARLES

LIMITED PARTNER

yes

01/2000

Feb 13, 2012

Mar 28, 2024

BAKER, JULIAN, CHARLES

MANAGING MEMBER

yes

01/2000

Feb 13, 2012

Mar 28, 2024

LESSING, SCOTT, LAWRENCE

PRESIDENT, CHIEF COMPLIANCE OFFICER

yes

02/2011

Feb 13, 2012

Mar 28, 2024

TOOHEY, ALEXANDRA, ANN

CHIEF FINANCIAL OFFICER

yes

01/2014

Mar 31, 2014

Mar 28, 2024

Related person

Type

Class on the graph

Its RAUM

Control

Common control

State

BAKER BIOTECH CAPITAL, L.P.

n/a

yes

n/a

BAKER BROTHERS LIFE SCIENCES CAPITAL, L.P.

n/a

yes

n/a

City

State

Country

Employees

Also broker-dealer

Bridgehampton

United States

Fiscal year

Filed

RAUM

Discretionary

Employees

Advisory staff

Offices

Private funds

Fund GAV

2025

Mar 27, 2026

$28B

n/a

2024

Mar 28, 2025

$18B

n/a

2023

Mar 28, 2024

$22B

2022

Mar 24, 2023

$23B

2021

Mar 28, 2022

$26B

2020

Mar 30, 2021

$36B

2019

Mar 25, 2020

$24B

2018

Mar 18, 2019

$17B

2017

Mar 29, 2018

$15B

2016

Mar 28, 2017

$16B

n/a

$16B

2015

Feb 25, 2016

$12B

n/a

$11B

2014

Mar 10, 2015

$11B

n/a

$11B

2013

Mar 31, 2014

$8.2B

n/a

$8.2B

2012

Mar 21, 2013

$4.4B

n/a

$4.4B

Latest fiscal year

RAUM

A year earlier

1y change

Three years earlier

3y CAGR

Employees

A year earlier

Offices

A year earlier

2025

$28B

$18B

56.2%

$23B

6.7%