Form D · Other Investment Fund

MacKay Municipal California Opportunities Fund, L.P.

New York, NY · CIK 0001641693

Offering snapshot reported May 6, 2026 · SEC filing

Reported sold: $1.06B
Investors reported: 707
Minimum accepted: $250K
First sale: May 1, 2015

Fundraising history

Reported sold

Dates are filing dates, not cash receipt dates. Decreases are reported revisions, not evidence of withdrawals. Separate offering histories are not added together.

What changed?

Latest filing versus its linked predecessor, where available.

Reported sold$1,054,326,439 → $1,064,051,439
Reported investors700 → 707

Filing history

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Filed	Filing type	Reported sold	Change vs linked filing	Investors	Source
May 6, 2026	Amendment	$1,064,051,439	$9,725,000vs May 6, 2025	707	SEC filing
May 6, 2025	Amendment	$1,054,326,439	$16,390,065vs May 6, 2024	700	SEC filing
May 6, 2024	Amendment	$1,037,936,374	$23,114,526vs May 4, 2023	687	SEC filing
May 4, 2023	Amendment	$1,014,821,848	$47,803,443vs May 4, 2022	659	SEC filing
May 4, 2022	Amendment	$967,018,405	$100,465,500vs May 4, 2021	596	SEC filing
May 4, 2021	Amendment	$866,552,905	$142,267,700vs May 4, 2020	529	SEC filing
May 4, 2020	Amendment	$724,285,205	$148,365,019vs May 3, 2019	454	SEC filing
May 3, 2019	Amendment	$575,920,186	$90,394,330vs May 4, 2018	380	SEC filing
May 4, 2018	Amendment	$485,525,856	$122,616,000vs May 5, 2017	303	SEC filing
May 5, 2017	Amendment	$362,909,856	$152,806,978vs May 6, 2016	216	SEC filing
May 6, 2016	Amendment	$210,102,878	$160,102,878vs May 7, 2015	84	SEC filing
May 7, 2015	Initial	$50,000,000	No comparison	2	SEC filing

Offering details

Securities: Pooled investment fund, Other
Exemptions: 06b, 3C, 3C.7
Duration over one year: Yes
Business combination: No

Sales commissions: $12.5M (estimated)
Finders' fees: $0
Form D file number: 021-239382

Limited Partnership Interests

The Investment Manager of the Issuer shares a portion of its management fee received from the Issuer with one or more of the Issuer's placement agents. Such placement agents may receive other fees (e.g., sales loads) payable directly to

Sales compensation recipients

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Recipient	CRD	Associated broker-dealer
NYLIFE Distributors LLC	35350
Merrill Lynch, Pierce, Fenner & Smith Incorporated	7691
iCapital Markets LLC	118219
Morgan Stanley Smith Barney LLC	149777
RBC Capital Markets, LLC	31194
UBS Financial Services Inc.	8174
J.P. Morgan Securities LLC	79
Wells Fargo Advisors Financial Network, LLC	11025
Wells Fargo Clearing Services, LLC	19616

Source: Form D, filed May 6, 2026. Minimum accepted may differ from a standard advertised minimum.

Fund connections

The linked fund shows its most recently reported ADV details.

Matched by reported Form D file number

MACKAY MUNICIPAL CALIFORNIA OPPORTUNITIES FUND, L.P.

Investment adviser: MACKAY SHIELDS LLC

Gross asset value: $361M
Beneficial owners: 368
ADV minimum commitment: $250K

Reported in Form ADV on Aug 6, 2026. Fund assets and beneficial owners measure different things from Form D sales and investors.

Service providers

Fund administrator CITCO (CANADA) INC. TORONTO, Canada Investor statements: Some (provided to some but not all investors) Related to adviser: No

Fund administrator CITCO FUND SERVICES (CURACAO) B.V. WILLEMSTAD, Curacao Investor statements: Some (provided to some but not all investors) Related to adviser: No

Auditor PRICEWATERHOUSECOOPERS LLP NEW YORK, New York, United States

Custodian J.P. MORGAN SECURITIES LLC NEW YORK, New York, United States Related to adviser: No

Custodian PERSHING LLC JERSEY CITY, New Jersey, United States Related to adviser: No

Custodian TD SECURITIES (USA) LLC NEW YORK, New York, United States Related to adviser: No

Marketer J.P. MORGAN SECURITIES LLC NEW YORK, New York, United States Related to adviser: No

Marketer MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED NEW YORK, New York, United States Related to adviser: No

Marketer MORGAN STANLEY PURCHASE, New York, United States Related to adviser: No

Marketer NYLIFE DISTRIBUTORS LLC JERSEY CITY, New Jersey, United States Related to adviser: Yes

Marketer RBC CAPITAL MARKETS, LLC NEW YORK, New York, United States Related to adviser: No

Marketer UBS FINANCIAL SERVICES INC. WEEHAWKEN, New Jersey, United States Related to adviser: No

Marketer WELLS FARGO ADVISORS ST. LOUIS, Missouri, United States Related to adviser: No

Prime broker J.P. MORGAN SECURITIES LLC NEW YORK, New York, United States

Prime broker PERSHING LLC JERSEY CITY, New Jersey, United States

Prime broker TD SECURITIES (USA) LLC NEW YORK, New York, United States

Provider details

Annual audit: Yes
Prime brokers: Yes
Custodians: Yes
Administrator other than the adviser: Yes
External marketing: Yes

PRICEWATERHOUSECOOPERS LLP
PCAOB 238

J.P. MORGAN SECURITIES LLC
SEC 8-35008

PERSHING LLC
SEC 8-17574

TD SECURITIES (USA) LLC
SEC 8-36747

J.P. MORGAN SECURITIES LLC
CRD 79 · SEC 801-3702

MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED
CRD 7691 · SEC 801-14235

MORGAN STANLEY
CRD 149777 · SEC 801-70103

NYLIFE DISTRIBUTORS LLC
CRD 35350 · SEC 8-46655

RBC CAPITAL MARKETS, LLC
CRD 31194 · SEC 801-13059

UBS FINANCIAL SERVICES INC.
CRD 8174 · SEC 801-7163

WELLS FARGO ADVISORS
CRD 19616 · SEC 801-37967

J.P. MORGAN SECURITIES LLC
CRD 79 · SEC 8-35008

PERSHING LLC
CRD 7560 · SEC 8-17574

TD SECURITIES (USA) LLC
CRD 18476 · SEC 8-36747

Filing source

Form ADV 2124546 · Aug 6, 2026 · Schedule D 7.B.(1), fund 805-2338564429

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

People & organizations

Current and past Form D appearances. These existing records do not establish a person's current role or uniquely identify them across issuers.

People and organizations reported in Form D filings
Name	Reported role
Robert A. Di Mella	Executive
John M. Loffredo	Executive
N/A Mac Kay Municipal Managers California Opportunities Gp Llc	Promoter
N/A Mac Kay Municipal Managers California Opportunities Gp, Llc	Executive
N/A Mac Kay Shields Llc	Promoter
N/A Mac Kay Shields, Llc	Promoter
Mac Kay Municipal Managers California Opportunities Gp Llc N/A	Executive
Mac Kay Shields, Llc N/A	Promoter

Issuer details

Industry: Pooled Investment Fund (See others in industry)

Address:

299 Park Avenue 32nd Floor
New York, NY, 10171