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HEYDORN STONE CAPITAL MANAGEMENT LLC
CRD 125903File 801-64133
APPROVED
Retail clients
Custody
Filing as of Mar 12, 2026
Feed vintage Oct 1, 2026
Regulatory AUM
$142.0M
Bottom 25% of cohort (national)
Discretionary AUM
$132.0M
Non-discretionary $10.0M
Clients
117
364 accounts
Employees
3
Bottom 25% of cohort in NY
Identity & registration
ADV Item 1- Organization form
- Limited Liability Company
- Firm type
- Registered
- SEC region
- NYRO
- Registration date
- Apr 29, 2005
- Principal office
- 2039 PALMER AVENUE, SUITE 202, LARCHMONT, NY, 10538
- Phone
- 914-752-5300
- Website
- HTTP://WWW.HEYDORNSTONE.COM
Assets & accounts
ADV Item 5F- Total regulatory AUM
- $142.0M
- Discretionary AUM
- $132.0M
- Non-discretionary AUM
- $10.0M
- Discretionary accounts
- 331
- Non-discretionary accounts
- 33
- Total accounts
- 364
- AUM per client
- $1.2M
Clients by type
ADV Item 5D| Client type | Clients | AUM |
|---|---|---|
| Charitable organizations | Fewer than 5 | $1.8M |
| High net worth individuals | 63 | $114.4M |
| Pension and profit sharing plans | Fewer than 5 | $1.3M |
| Individuals (other than high net worth individuals) | 50 | $24.5M |
Compensation & activities
ADV Items 5E, 5GCompensation
- Fixed fees
- A percentage of assets under your management
Advisory activities
- Financial planning services
- Selection of other advisers
- Portfolio management for individuals and/or small businesses
Custody
ADV Item 9- Firm Custody Cash
- Yes
- Firm Custody Assets
- No
- Firm Custody Clients
- No
- Firm Custody Securities
- Yes
- Related Person Custody Cash
- No
- Related Person Custody Assets
- No
- Related Person Custody Clients
- No
- Related Person Custody Securities
- No
Disclosure events
ADV Item 11This firm answered no to every Item 11 disclosure question in this filing.
Filed changes
| Date | Field | From | To | Change |
|---|---|---|---|---|
| Apr 1, 2026 | Employees | 4 | 3 | decreased by1 |
| Apr 1, 2026 | Clients | 109 | 117 | increased by8 |
| Apr 1, 2026 | AUM | $125,630,430 | $142,014,260 | increased by$16,383,830 |
| Apr 1, 2026 | Accounts | 341 | 364 | increased by23 |
| May 1, 2025 vs Oct 1, 2022 | Employees | 3 | 4 | increased by1 |
| May 1, 2025 vs Oct 1, 2022 | Clients | 100 | 109 | increased by9 |
| May 1, 2025 vs Oct 1, 2022 | AUM | $101,468,522 | $125,630,430 | increased by$24,161,908 |
| May 1, 2025 vs Oct 1, 2022 | Accounts | 284 | 341 | increased by57 |
| Mar 1, 2022 | Employees | 2 | 3 | increased by1 |
| Mar 1, 2022 | Clients | 93 | 100 | increased by7 |
| Mar 1, 2022 | AUM | $92,111,952 | $101,468,522 | increased by$9,356,570 |
| Mar 1, 2022 | Accounts | 240 | 284 | increased by44 |
| Apr 1, 2021 | Registration | — | APPROVED |
On Form 5500, an adviser usually appears as a plan service provider (Schedule C), not the plan sponsor.
See plans that list “HEYDORN STONE” as a service provider on 5500mcp →Matched by name only — Form ADV and Form 5500 share no identifier, and names are searched loosely (“HEYDORN STONE” may also match similarly-named firms). Confirm identity against each filing.
Every value above is reproduced from this firm's Form ADV filing. Fields the firm left blank are shown as “Not reported” rather than filled in from other sources.