Investment adviser · CRD 110045

MFS INVESTMENT MANAGEMENT

Investment adviser filing (IA)

MASSACHUSETTS FINANCIAL SERVICES COMPANY

BOSTON, MA, United States · Form ADV filed Mar 31, 2026

Regulatory AUM: $514B
Client accounts: 355
Employees: 1,244
Advisory professionals: 327

Who they report serving

Form ADV · Item 5.D

Client types and their share of reported regulatory assets.

Client type	Clients	Regulatory assets	Share of AUM
Investment companies	187	$436,503,794,913	84.9%
Pooled investment vehicles	115	$70,809,843,695	13.8%
Retirement plans	18	$3,294,871,647	0.6%
Sovereign wealth & foreign institutions	4	$2,457,542,471	0.5%
Government entities	2	$704,813,501	0.1%
Corporations & businesses	26	$142,707,230	0.0%
Insurance companies	2	$86,544,072	0.0%
Charities	1	$51,059,768	0.0%

Filing source

Form ADV 2044628 · Mar 31, 2026 · Item 5.D

Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.

Private funds & service providers

18 Private funds

The count excludes feeder funds. Funds in the latest filing appear first, ordered by reported gross assets. Earlier funds retain their last reported values.

LENOX STREET 2007-I, LTD.Securitized Asset Fund · Last reported Jan 4, 2013$994MGross asset value

Fund administrator BANK OF NEW YORK MELLON TRUST COMPANY N.A. HOUSTON, Texas, United States Investor statements: Yes (provided to all investors) Related to adviser: No

Custodian BANK OF NEW YORK MELLON TRUST COMPANY N.A. HOUSTON, Texas, United States Related to adviser: No

Provider details

Annual audit: No
Prime brokers: No
Custodians: Yes
Administrator other than the adviser: Yes
External marketing: No

Fund details & source

Fund ID: 805-4501731508
Reported beneficial owners: 0
Minimum commitment: $500K

Form ADV 688871 · Jan 4, 2013 · Schedule D 7.B.(1)

Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.

MFS INTERNATIONAL GROWTH LLCOther Private Fund · Last reported Jan 4, 2021$485MGross asset value

Fund administrator J.P. MORGAN CHASE BANK, N.A. BOSTON, Massachusetts, United States Investor statements: Yes (provided to all investors) Related to adviser: No

Auditor DELOITTE & TOUCHE LLP BOSTON, Massachusetts, United States

Custodian J.P. MORGAN CHASE BANK, N.A. NEW YORK, New York, United States Related to adviser: No

Provider details

Annual audit: Yes
Prime brokers: No
Custodians: Yes
Administrator other than the adviser: Yes
External marketing: No

DELOITTE & TOUCHE LLP
PCAOB 34

Fund details & source

Fund ID: 805-1352751914
Reported beneficial owners: 16
Minimum commitment: $3M
Form D file number: 021-211154

Form ADV 1477675 · Jan 4, 2021 · Schedule D 7.B.(1)

Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.

MFS CORE PLUS FIXED INCOME LLCHedge Fund · Last reported Jan 4, 2021$365MGross asset value

Fund administrator J.P. MORGAN CHASE BANK, N.A. BOSTON, Massachusetts, United States Investor statements: Yes (provided to all investors) Related to adviser: No

Auditor DELOITTE & TOUCHE LLP BOSTON, Massachusetts, United States

Custodian J.P. MORGAN CHASE BANK, N.A. NEW YORK, New York, United States Related to adviser: No

Provider details

Annual audit: Yes
Prime brokers: No
Custodians: Yes
Administrator other than the adviser: Yes
External marketing: No

DELOITTE & TOUCHE LLP
PCAOB 34

Fund details & source

Fund ID: 805-9390463320
Reported beneficial owners: 6
Minimum commitment: $3M
Form D file number: 021-248495

Form ADV 1477675 · Jan 4, 2021 · Schedule D 7.B.(1)

Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.

FAIRFIELD STREET SOLAR 2004-1, LTD.Securitized Asset Fund · Last reported Oct 1, 2015$363MGross asset value

Fund administrator U.S. BANK GLOBAL CORPORATE TRUST SERVICES CHICAGO, Illinois, United States Investor statements: Yes (provided to all investors) Related to adviser: No

Custodian U.S. BANK GLOBAL CORPORATE TRUST SERVICES CHICAGO, Illinois, United States Related to adviser: No

Provider details

Annual audit: No
Prime brokers: No
Custodians: Yes
Administrator other than the adviser: Yes
External marketing: No

Fund details & source

Fund ID: 805-2083232866
Reported beneficial owners: 5
Minimum commitment: $150K

Form ADV 949506 · Oct 1, 2015 · Schedule D 7.B.(1)

Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.

IPSWICH STREET CDO, LTD.Securitized Asset Fund · Last reported Jun 28, 2012$350MGross asset value

Fund administrator BANK OF NEW YORK MELLON TRUST COMPANY N.A. HOUSTON, Texas, United States Investor statements: Yes (provided to all investors) Related to adviser: No

Custodian BANK OF NEW YORK MELLON TRUST COMPANY N.A. HOUSTON, Texas, United States Related to adviser: No

Provider details

Annual audit: No
Prime brokers: No
Custodians: Yes
Administrator other than the adviser: Yes
External marketing: No

Fund details & source

Fund ID: 805-2584866202
Reported beneficial owners: 300
Minimum commitment: $250K

Form ADV 657044 · Jun 28, 2012 · Schedule D 7.B.(1)

Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.

MFS INTERNATIONAL GROWTH LLC IIOther Private Fund · Last reported Jan 4, 2021$299MGross asset value

Fund administrator J.P. MORGAN CHASE BANK, N.A. BOSTON, Massachusetts, United States Investor statements: Yes (provided to all investors) Related to adviser: No

Auditor DELOITTE & TOUCHE LLP BOSTON, Massachusetts, United States

Custodian J.P. MORGAN CHASE BANK, N.A. NEW YORK, New York, United States Related to adviser: No

Provider details

Annual audit: Yes
Prime brokers: No
Custodians: Yes
Administrator other than the adviser: Yes
External marketing: No

DELOITTE & TOUCHE LLP
PCAOB 34

Fund details & source

Fund ID: 805-9224556434
Reported beneficial owners: 5
Minimum commitment: $3M
Form D file number: 021-292937

Form ADV 1477675 · Jan 4, 2021 · Schedule D 7.B.(1)

Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.

GLOUCESTER STREET ABS CDO I, LTD.Securitized Asset Fund · Last reported Jan 31, 2017$295MGross asset value

Fund administrator U.S. BANK GLOBAL CORPORATE TRUST SERVICES CHICAGO, Illinois, United States Investor statements: Yes (provided to all investors) Related to adviser: No

Custodian U.S. BANK GLOBAL CORPORATE TRUST SERVICES CHICAGO, Illinois, United States Related to adviser: No

Provider details

Annual audit: No
Prime brokers: No
Custodians: Yes
Administrator other than the adviser: Yes
External marketing: No

Fund details & source

Fund ID: 805-6566740982
Reported beneficial owners: 3
Minimum commitment: $250K

Form ADV 1067865 · Jan 31, 2017 · Schedule D 7.B.(1)

Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.

Services & filing details

Most recent filing: Mar 31, 2026. View historical filings

Reported services

Investment company portfolio management · Pooled investment vehicle management · Business portfolio management

Compensation

Percentage of assets

Principal office

111 HUNTINGTON AVENUE
BOSTON, MA, 02199-7618, United States

CRD 110045

Filing source

Form ADV 2044628 · Mar 31, 2026 · Items 1 & 5

Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.