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The Obsidian Master Fund

Hedge FundFund ID 805-9384485105Cayman Islands
Gross assets
$340.6M
Min. investment
$1M
Beneficial owners
81
Size rank
Top 23%
Audited
Yes
Structure
Master

About this fund

The Obsidian Master Fund is a hedge fund managed by BlackRock Financial Management, Inc. The fund reports $340.6 million in gross assets, placing it among the top 23% of private funds by size. The stated minimum investment is $1 million. Its financial statements are audited annually. Private funds are not required to publicly disclose returns; Form ADV reports assets, structure, and service providers, shown above.

Fund details

Fund ID805-9384485105
Fund typeHedge Fund
3(c)(1) exclusionNo
3(c)(7) exclusionYes
Master fundYes
Feeder fundNo
Fund of fundsNo
Relies on exemption from registrationYes
Annual auditYes
Prepared per GAAPYes
Sub-advisedNo
% of assets independently valued100%

Other funds from this manager

FundTypeGross assets
BlackRock Systematic Total Alpha Master Fund Ltd - AggregateHedge$73.34B
Current Asset Fund LimitedLiquidity$9.1B
BlackRock Long Term Private Capital ScspHedge$4.6B
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Frequently asked questions

How large is The Obsidian Master Fund?

The Obsidian Master Fund reports $340.6 million in gross assets, among the top 23% of private funds by size.

What is the minimum investment for The Obsidian Master Fund?

The stated minimum investment is $1 million.

Who manages The Obsidian Master Fund?

The Obsidian Master Fund is managed by BlackRock Financial Management, Inc.

Does The Obsidian Master Fund disclose returns?

No. Private funds are not required to publicly disclose performance. Form ADV reports assets, structure, and service providers.

Service providers

Prime broker
Administrator
Auditor
Marketer

Reported gross assets

$340.6M▲ 68%
Jan '25 — $202.8MFeb '25 — $202.8MMar '25 — $202.8MApr '25 — $202.8MMay '25 — $202.8MJun '25 — $202.8MJul '25 — $202.8MAug '25 — $202.8MSep '25 — $202.8MOct '25 — $202.8MNov '25 — $202.8MDec '25 — $202.8MJan '26 — $202.8MFeb '26 — $202.8MMar '26 — $202.8MApr '26 — $202.8MMay '26 — $202.8MJun '26 — $340.6M
Jan '25Form ADV, monthlyJun '26

How this fund compares

Gross assetsTop 23%
Larger than 77% of 67,041 private funds
Gross assets vs Hedge FundsTop 32%
Larger than 68% of 12,442 hedge funds
Minimum investmentTop 33%
Higher than 67% of funds reporting a minimum

Investor base

Adviser & related persons3%
Funds of funds%
Non-U.S. persons51%
Share of the fund's beneficial ownership reported on Form ADV. Categories can overlap.