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RIA / WealthRegistered adviserasset managerSEC registeredRAUM 1b 10b

ROCK SPRINGS CAPITAL

ROCK SPRINGS CAPITAL MANAGEMENT LP, CRD 168648

BALTIMORE, MD

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:e9ae5e8a-3840-5fc8-39cc-ca140d17d210

Data as of Mar 24, 2026 (this record's last observation) from federal regulator filings. Page built Sep 19, 2026, 12:54 AM UTC and rebuilt at most every 15 minutes.

Relationships: 11
Dated events: 6
On other graphs: 0
Observed: Aug 23, 2013 to Mar 24, 2026
22 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=true bd_reps=0.0
Regulatory AUM: $2.4BItem 5.F on the latest filing (2026-03-24); as reported, and an affiliate's assets may be counted again on its own filing
Discretionary RAUM: $2.4B
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: 17
Advisory employees: 8
Offices: 0Schedule D 1.F, beyond the principal office
Accounts: 6
Private funds: 2Schedule D 7.B(1)
Custody, client assets: $0
SEC number: 801-78511
CIK: 1595725
CRD: 168648
Filings on the tape: 22
First filed: Aug 23, 2013
Latest filed: Mar 24, 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
ROCK SPRINGS CAPITAL MASTER FUND LP	Hedge Fund	$5.5B	Mar 27, 2024	635	Jan 22, 2014	reported	021-204603
FOUR PINES MASTER FUND LP	Hedge Fund	$264M	Mar 27, 2024	25	Mar 30, 2020	reported	021-364830

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
BUSSARD, GORDON, MARGRAF ("MARK")	Member	C	yes	03/2013	Aug 23, 2013	Mar 27, 2024
BUSSARD, GORDON, MARGRAF ("MARK")	MEMBER/LIMITED PARTNER	C	yes	03/2013	Aug 23, 2013	Mar 27, 2024
JENNER, KRIS, HARLAN	MEMBER/LIMITED PARTNER	C	yes	03/2013	Aug 23, 2013	Mar 27, 2024
JENNER, KRIS, HARLAN	Member	C	yes	03/2013	Aug 23, 2013	Mar 27, 2024
MCPHAIL, GRAHAM, MORGAN	Member	C	yes	03/2013	Aug 23, 2013	Mar 27, 2024
MCPHAIL, GRAHAM, MORGAN	MEMBER/LIMITED PARTNER	C	yes	03/2013	Aug 23, 2013	Mar 27, 2024
ROCK SPRINGS CAPITAL LLC	GENERAL PARTNER	Na	yes	03/2013	Aug 23, 2013	Mar 27, 2024
ETOH, NNAMDI, C	CHIEF FINANCIAL OFFICER	Na	no	01/2021	Jan 31, 2019	Mar 27, 2024
O'CONNOR, AIDAN, HUGH	CHIEF COMPLIANCE OFFICER AND GENERAL COUNSEL	Na	no	10/2022	Nov 8, 2022	Mar 27, 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
FOUR PINES GENERAL PARTNER LLC	n/a	n/a	n/a	N	yes	n/a
ROCK SPRINGS GENERAL PARTNER LLC	n/a	n/a	n/a	N	yes	n/a

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 24, 2026	$2.4B	$2.4B	17	8	0	2	n/a
2024	Mar 14, 2025	$3.3B	$3.3B	20	9	0	2	n/a
2023	Mar 27, 2024	$5.8B	$5.8B	18	7	0	2	$5.8B
2022	Mar 31, 2023	$5.7B	$5.7B	20	9	0	2	$5.0B
2021	Mar 31, 2022	$5.9B	$5.9B	21	9	0	2	$4.5B
2020	Mar 31, 2021	$5.5B	$5.5B	19	9	0	2	$4.8B
2019	Mar 30, 2020	$3.6B	$3.6B	17	8	0	2	$3.6B
2018	Jan 31, 2019	$2.4B	$2.4B	19	9	0	1	$2.4B
2017	Mar 29, 2018	$2.5B	$2.5B	18	8	0	1	$2.5B
2016	Mar 31, 2017	$1.7B	$1.7B	14	8	n/a	1	$1.6B
2015	Mar 28, 2016	$1.5B	$1.5B	14	9	n/a	1	$1.5B
2014	Mar 30, 2015	$1.1B	$1.1B	13	8	n/a	1	$922M
2013	Jan 22, 2014	$319M	$319M	9	5	n/a	1	$319M

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	$2.4B	$3.3B	-27.0%	$5.7B	-24.8%	17	20	0	0

Relationships

Advises (2)

→ FOUR PINES MASTER FUND LPPrivate fundHedge Fund, IA
Mar 30, 2020 to presentfactForm ADV
→ ROCK SPRINGS CAPITAL MASTER FUND LPPrivate fundHedge Fund, IA
Jan 22, 2014 to presentfactForm ADV

Owns (2)

← ETOH, NNAMDI, COwnerCHIEF FINANCIAL OFFICER, ownership code NA, individual
Jan 31, 2019 to Mar 27, 2024factForm ADV
← O'CONNOR, AIDAN, HUGHOwnerCHIEF COMPLIANCE OFFICER AND GENERAL COUNSEL, ownership code NA, individual
Nov 8, 2022 to Mar 27, 2024factForm ADV

Controls (4)

← BUSSARD, GORDON, MARGRAF ("MARK")OwnerMEMBER, ownership code C, individual
Aug 23, 2013 to Mar 27, 2024factForm ADV
← MCPHAIL, GRAHAM, MORGANOwnerMEMBER, ownership code C, individual
Aug 23, 2013 to Mar 27, 2024factForm ADV
← JENNER, KRIS, HARLANOwnerMEMBER, ownership code C, individual
Aug 23, 2013 to Mar 27, 2024factForm ADV
← ROCK SPRINGS CAPITAL LLCOwnerGENERAL PARTNER, ownership code NA, domestic entity
Aug 23, 2013 to Mar 27, 2024factForm ADV

Dated events

Occurred
Mar 24, 2026
Regulatory AUM changed
Rock Springs Capital reported RAUM $2.4B, down 27% from $3.3B (2025-03-14 to 2026-03-24)
Form ADVobserved 3 days ago
$-898M
Occurred
Mar 14, 2025
Regulatory AUM changed
Rock Springs Capital reported RAUM $3.3B, down 42% from $5.8B (2024-03-27 to 2025-03-14)
Form ADVobserved 3 days ago
$-2.4B
Occurred
Mar 31, 2021
Regulatory AUM changed
Rock Springs Capital reported RAUM $5.5B, up 55% from $3.6B (2020-03-30 to 2021-03-31)
Form ADVobserved 3 days ago
$2.0B
Occurred
Mar 30, 2020
Regulatory AUM changed
Rock Springs Capital reported RAUM $3.6B, up 48% from $2.4B (2020-02-03 to 2020-03-30)
Form ADVobserved 3 days ago
$1.2B
Occurred
Mar 29, 2018
Regulatory AUM changed
Rock Springs Capital reported RAUM $2.5B, up 50% from $1.7B (2017-03-31 to 2018-03-29)
Form ADVobserved 3 days ago
$840M
Occurred
Aug 23, 2013
First Form ADV filing
Rock Springs Capital Lp filed its initial SEC registration (Form ADV)
Form ADVobserved 3 days ago

Provenance

Graph: RIA / Wealth Management
Canonical id: dfx:ria:e9ae5e8a-3840-5fc8-39cc-ca140d17d210
First observed: Aug 23, 2013
Last observed: Mar 24, 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.

ROCK SPRINGS CAPITAL

ROCK SPRINGS CAPITAL MANAGEMENT LP, CRD 168648

BALTIMORE, MD

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:e9ae5e8a-3840-5fc8-39cc-ca140d17d210

Data as of Mar 24, 2026 (this record's last observation) from federal regulator filings. Page built Sep 19, 2026, 12:54 AM UTC and rebuilt at most every 15 minutes.

Fund

Type

Reported GAV

As of

Owners

First reported

Status

Form D file

ROCK SPRINGS CAPITAL MASTER FUND LP

Hedge Fund

$5.5B

Mar 27, 2024

635

Jan 22, 2014

reported

021-204603

FOUR PINES MASTER FUND LP

Hedge Fund

$264M

Mar 27, 2024

Mar 30, 2020

reported

021-364830

Owner

Title

Ownership code

Control person

Acquired

First seen

Last seen

BUSSARD, GORDON, MARGRAF ("MARK")

Member

yes

03/2013

Aug 23, 2013

Mar 27, 2024

BUSSARD, GORDON, MARGRAF ("MARK")

MEMBER/LIMITED PARTNER

yes

03/2013

Aug 23, 2013

Mar 27, 2024

JENNER, KRIS, HARLAN

MEMBER/LIMITED PARTNER

yes

03/2013

Aug 23, 2013

Mar 27, 2024

JENNER, KRIS, HARLAN

Member

yes

03/2013

Aug 23, 2013

Mar 27, 2024

MCPHAIL, GRAHAM, MORGAN

Member

yes

03/2013

Aug 23, 2013

Mar 27, 2024

MCPHAIL, GRAHAM, MORGAN

MEMBER/LIMITED PARTNER

yes

03/2013

Aug 23, 2013

Mar 27, 2024

ROCK SPRINGS CAPITAL LLC

GENERAL PARTNER

yes

03/2013

Aug 23, 2013

Mar 27, 2024

ETOH, NNAMDI, C

CHIEF FINANCIAL OFFICER

01/2021

Jan 31, 2019

Mar 27, 2024

O'CONNOR, AIDAN, HUGH

CHIEF COMPLIANCE OFFICER AND GENERAL COUNSEL

10/2022

Nov 8, 2022

Mar 27, 2024

Related person

Type

Class on the graph

Its RAUM

Control

Common control

State

FOUR PINES GENERAL PARTNER LLC

n/a

yes

n/a

ROCK SPRINGS GENERAL PARTNER LLC

n/a

yes

n/a

Fiscal year

Filed

RAUM

Discretionary

Employees

Advisory staff

Offices

Private funds

Fund GAV

2025

Mar 24, 2026

$2.4B

n/a

2024

Mar 14, 2025

$3.3B

n/a

2023

Mar 27, 2024

$5.8B

2022

Mar 31, 2023

$5.7B

$5.0B

2021

Mar 31, 2022

$5.9B

$4.5B

2020

Mar 31, 2021

$5.5B

$4.8B

2019

Mar 30, 2020

$3.6B

2018

Jan 31, 2019

$2.4B

2017

Mar 29, 2018

$2.5B

2016

Mar 31, 2017

$1.7B

n/a

$1.6B

2015

Mar 28, 2016

$1.5B

n/a

$1.5B

2014

Mar 30, 2015

$1.1B

n/a

$922M

2013

Jan 22, 2014

$319M

n/a

$319M

Latest fiscal year

RAUM

A year earlier

1y change

Three years earlier

3y CAGR

Employees

A year earlier

Offices

A year earlier

2025

$2.4B

$3.3B

-27.0%

$5.7B

-24.8%