# Obsidian CIO LLC

> Obsidian CIO LLC is an SEC-registered investment advisory firm in New York, NY, registered since 2017, reporting $1 billion to $5 billion in regulatory assets under management in its Form ADV filing dated June 9, 2026.

- CRD: 289000
- Filed as: OBSIDIAN CIO LLC
- Registration: SEC-registered investment adviser (status as filed: Approved)
- Location: New York, NY
- Filing period: October 2026
- Form ADV filing dated: June 9, 2026
- SEC record (IAPD): https://adviserinfo.sec.gov/firm/summary/289000
- AdvisorCensus page: https://advisorcensus.com/firm/obsidian-cio-llc-new-york-ny-289000

## Quick answers

**How is Obsidian CIO LLC compensated?**
On its Form ADV (Item 5.E, October 2026), Obsidian CIO LLC reports these compensation arrangements: a percentage of assets under its management; other. The amounts are in Item 5 of its Form ADV Part 2A brochure.

**Where is Obsidian CIO LLC located?**
Obsidian CIO LLC's principal office is in New York, NY, according to its Form ADV.

**Is Obsidian CIO LLC registered with the SEC or a state?**
Obsidian CIO LLC is an SEC-registered investment advisory firm, registered since 2017. Status as filed: Approved. CRD 289000.

**How much does Obsidian CIO LLC manage?**
Obsidian CIO LLC reports $1,284,027,815 in regulatory assets under management in its Form ADV filing dated June 9, 2026 (100% discretionary).

**How have Obsidian CIO LLC's assets and staff changed since 2021?**
In the Form ADV data for Obsidian CIO LLC: Regulatory assets under management: $347,531,303 in the October 2021 data and $1,284,027,815 in the October 2026 data, up 269%. Total employees: 3 in October 2021 and 6 in October 2026. Assets under management move with markets as well as with clients coming and going.

**What types of clients does Obsidian CIO LLC serve?**
By number of clients on Form ADV Item 5.D: other investment advisers (7).

**Which custodians does Obsidian CIO LLC use?**
Obsidian CIO LLC's most recent Form ADV filing (Schedule D, Section 5.K(3)) lists Charles Schwab & Co., Inc. as a custodian holding 10% or more of its separately managed account assets.

**Does Obsidian CIO LLC report any disciplinary disclosures?**
Reports no disclosure items on Form ADV Item 11. The detail of any item is on the firm's SEC record: https://adviserinfo.sec.gov/firm/summary/289000

**What changed in Obsidian CIO LLC's recent Form ADV filings?**
In the July 2026 filing data: Changed its legal name from Obsidian CIO, LLC to Obsidian CIO LLC. Updated its list of owners and control persons (Schedule A).

## From the Form ADV filing

### Compensation (Item 5.E)
- A percentage of assets under your management
- Other

### Custodians (Schedule D, Section 5.K(3))
- Charles Schwab & Co., Inc.

Custodians holding 10% or more of the firm's separately managed account assets, as filed on Form ADV (Schedule D, Section 5.K(3)). A custodian holds client assets; it does not endorse or supervise the firm. AdvisorCensus has no relationship with any custodian.

### Regulatory assets under management (Item 5.F)
- Total: $1,284,027,815
- Discretionary: $1,284,027,815
- Non-discretionary: $0

### Clients (Item 5.D)

| Client type | Clients | Assets |
| --- | --- | --- |
| Other investment advisers | 7 | $1,284,027,815 |

### Advisory services (Item 5.G)
- Portfolio management for individuals and/or small businesses
- Portfolio management for businesses (other than small businesses) or institutional clients
- Selection of other advisers (including private fund managers)
- Educational seminars/workshops

### Firm details
- Registered since: 2017 (9 years)
- Employees: 6 total, 4 performing advisory functions
- Wrap fee program participation: No
- States registered or notice-filed: NJ, NY
- Disclosures (Item 11): Reports no disclosure items on Form ADV Item 11.

### Websites listed on Form ADV (Item 1.I)
- obsidiancio.com
- LinkedIn @obsidiancio

## Assets and staff over time

| Data period | Regulatory assets under management | Employees | Filing dated |
| --- | --- | --- | --- |
| October 2021 | $347,531,303 | 3 | March 30, 2021 |
| October 2022 | $510,494,600 | 6 | March 24, 2022 |
| October 2023 | $515,836,252 | 8 | March 30, 2023 |
| October 2024 | $739,171,878 | 6 | March 28, 2024 |
| October 2025 | $964,522,357 | 8 | March 31, 2025 |
| October 2026 | $1,284,027,815 | 6 | June 9, 2026 |

Regulatory assets under management: $347,531,303 in the October 2021 data and $1,284,027,815 in the October 2026 data, up 269%.
Total employees: 3 in October 2021 and 6 in October 2026.

## Changes in the filing (last 12 months)

### July 2026
- Changed its legal name from Obsidian CIO, LLC to Obsidian CIO LLC.
- Updated its list of owners and control persons (Schedule A).

### February 2026
- Changed its legal name from Fountainhead AM, LLC to Obsidian CIO, LLC.
- Regulatory assets under management went from $964,522,357 to $1,284,027,815 (+33%).
- No longer lists an office in New York, NY.

## Source

Form ADV as filed, October 2026. Values appear as filed. Cite as: AdvisorCensus. Obsidian CIO LLC (CRD 289000): Form ADV filing data as of October 2026.