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SEC-registered adviser

H•••••• S•••• C•••••• M••••••••• L••

Independent wealth managerLarchmont, New YorkCRD 125903SEC 801-64133websiteIAPD
Latest filing Mar 12, 2026
First filing on the tape Mar 27, 2012 · 23 filings
SEC status approved since Apr 29, 2005
RAUM
$142M
reported, Item 5.F
Discretionary
93%
of RAUM
Private clients
98%
$139M individuals and HNW
Advisors
2
registered through the firm on IAPD
RAUM per advisor
$71.0M
derived; firm RAUM over IAPD count
Employees
3
2 advisory (5.B.1)
Offices
0
beyond the principal office
Private funds
0
reported on Schedule D
History
23 filings and snapshots on the tape
RAUM$142M as of Mar 12, 2026
Mar 27, 2012$40.6M then
HNW client RAUM$114M as of Mar 12, 2026
Mar 8, 2018$46.6M then
State-registered IARs (5.B.3)2 as of Mar 12, 2026
Mar 27, 20120 then
Employees (5.A)3 as of Mar 12, 2026
Mar 14, 20132 then
Private funds: no history
RAUM +13% over the last fiscal year+13% a year over threeIARs 2 to 2
Practice profile
derived from the filing of Mar 12, 2026; every figure names its basis
Archetypes, each a printed rule
  • HNW wealth manager · private-client share of RAUM at least 50 percent and HNW share of private-client RAUM 50 to 90 percent
  • Independent boutique · a wealth manager with no broker-dealer, bank or insurance affiliate, 2 to 25 advisors, one to three offices, no public reporting company control
  • Solo or small team · one advisor, or a wealth manager with up to three advisors and one office
RAUM per advisor
$71.0MderivedRAUM over IAPD advisors; not a book size
Clients per advisor
57derivedindividual and HNW clients (5.D) over advisors
Average HNW client
$1.8MderivedHNW RAUM over HNW clients
Average account
$390,149derivedRAUM over accounts (5.F.2.f)
Discretionary
93%derivedof RAUM
Institutional
2.2%derivedpensions, charities, corporations, government, insurance, banks, other advisers
Employees per advisor
1.5derivedItem 5.A over advisors
Advisors per office
2.0derived1 offices incl. principal (1.F.5)
RAUM growth, one year
+13%derivedbetween the last two annual amendments
Advisor growth, one year
+0.0%derivedItem 5.B.3 between annual amendments
Client growth, one year
+7.6%derived
Compensation
percentage of assets, fixed feesreportedItem 5.E
Advisory activities
financial planning, portfolio management for individuals, selection of other advisersreportedItem 5.G
Custody
$30.1M, 51 clientsreportedItem 9.A
Ownership
no PE, bank or public-company owner found on Schedule Aderived
Advisor book size
not public; not estimatedreported
Also answered yes on Form ADV
  • buys or sells securities as principal to or from clients (8.A.2)
  • has discretionary authority over which securities are bought or sold (8.C.1)
  • receives research or other products from a broker-dealer, soft dollars (8.E)
  • has custody of client cash or bank accounts (9.A.1.a)
  • has custody of client securities (9.A.1.b)
Where the RAUM sits
Form ADV Item 5.D, latest filing
  • High-net-worth individuals$114M81%
  • Individuals$24.5M17%
  • Charitable organizations$1.8M1.3%
  • Pension and profit-sharing plans$1.3M0.9%
Individual clients
50reported
HNW clients
63reported
Pension plan clients
2reported
Charitable clients
2reported
Accounts
364reported
Financial planning clients
51-100reported
Wrap fee programs
noreported
Custody of client assets
$30.1M for 51 clientsreported
Compensation
% of AUM, fixedreported
Class basis
private_client_share=0.98 fund_share=0.0 institutional_share=0.02 related_bd=false related_bank=false bd_reps=0.0derived
Advisors registered through the firm
2 on IAPD today, longest tenure first
NameBranchHere sinceIn industryPrior firms
A•••• M•• S••••Certified Financial PlannerLarchmont, NyMar 18, 201430 y0
M••••• A•••••••• L••••••Larchmont, NyAug 30, 202512 y0
Advisor movement
0 left, 0 joined in 12 months
net 0 in 12 months0 left in 90 days0 joined in 90 daysdeparture rate 0.0% of current headcount0 left over 36 months
Private funds
No private fund reported.
Owners and control persons
Schedule A and B, latest filing
  • S••••• A••••• M•• · Managing Partner, Ccocontrol
    since 09/2013 · owns 75% or more
Related persons
Schedule D 7.A
No related person reported.
Office movement
IAPD branch city; joins and departures in 12 months
OfficeAdvisorsJoinedLeftTeams outForming
Larchmont, Ny · principal200
Offices
Schedule D 1.F, the 25 largest
No branch office listed.
What changed
consecutive filings, newest first
  • Accounts · 341 to 364
    Sep 17, 2025 to Mar 12, 2026
  • HNW clients · 58 to 63
    Sep 17, 2025 to Mar 12, 2026
  • Individual clients · 47 to 50
    Sep 17, 2025 to Mar 12, 2026
  • Assets in custody · $34.5M to $30.1M
    Sep 17, 2025 to Mar 12, 2026
  • Employees · 4 to 3
    Sep 17, 2025 to Mar 12, 2026
  • Discretionary RAUM · $116M to $132M
    Sep 17, 2025 to Mar 12, 2026
  • HNW RAUM · $103M to $114M
    Sep 17, 2025 to Mar 12, 2026
  • Individual RAUM · $20.1M to $24.5M
    Sep 17, 2025 to Mar 12, 2026
  • Non-discretionary RAUM · $10.1M to $10.0M
    Sep 17, 2025 to Mar 12, 2026
  • Pension RAUM · $1.1M to $1.3M
    Sep 17, 2025 to Mar 12, 2026
  • RAUM · $126M to $142M
    Sep 17, 2025 to Mar 12, 2026
  • Accounts · 329 to 341
    Mar 27, 2024 to Jan 15, 2025
  • HNW clients · 69 to 58
    Mar 27, 2024 to Jan 15, 2025
  • Individual clients · 31 to 47
    Mar 27, 2024 to Jan 15, 2025
  • Pension plan clients · 3 to 2
    Mar 27, 2024 to Jan 15, 2025
  • Assets in custody · $34.0M to $34.5M
    Mar 27, 2024 to Jan 15, 2025
  • Employees · 3 to 4
    Mar 27, 2024 to Jan 15, 2025
  • Financial planning clients · 51-100 to 51-100
    Mar 27, 2024 to Jan 15, 2025
  • Discretionary RAUM · $107M to $116M
    Mar 27, 2024 to Jan 15, 2025
  • HNW RAUM · $99.4M to $103M
    Mar 27, 2024 to Jan 15, 2025
  • Individual RAUM · $9.2M to $20.1M
    Mar 27, 2024 to Jan 15, 2025
  • Non-discretionary RAUM · $4.4M to $10.1M
    Mar 27, 2024 to Jan 15, 2025
  • Pension RAUM · $1.3M to $1.1M
    Mar 27, 2024 to Jan 15, 2025
  • RAUM · $111M to $126M
    Mar 27, 2024 to Jan 15, 2025
  • Accounts · 338 to 329
    Mar 23, 2023 to Mar 27, 2024
  • HNW clients · 66 to 69
    Mar 23, 2023 to Mar 27, 2024
  • Individual clients · 26 to 31
    Mar 23, 2023 to Mar 27, 2024
  • Assets in custody · $27.8M to $34.0M
    Mar 23, 2023 to Mar 27, 2024
  • Discretionary RAUM · $92.9M to $107M
    Mar 23, 2023 to Mar 27, 2024
  • HNW RAUM · $88.5M to $99.4M
    Mar 23, 2023 to Mar 27, 2024
  • Individual RAUM · $6.7M to $9.2M
    Mar 23, 2023 to Mar 27, 2024
  • Non-discretionary RAUM · $4.9M to $4.4M
    Mar 23, 2023 to Mar 27, 2024
  • Pension RAUM · $1.1M to $1.3M
    Mar 23, 2023 to Mar 27, 2024
  • RAUM · $97.8M to $111M
    Mar 23, 2023 to Mar 27, 2024
  • Accounts · 284 to 338
    Feb 22, 2022 to Mar 23, 2023
  • HNW clients · 64 to 66
    Feb 22, 2022 to Mar 23, 2023
  • Individual clients · 31 to 26
    Feb 22, 2022 to Mar 23, 2023
  • Assets in custody · $29.0M to $27.8M
    Feb 22, 2022 to Mar 23, 2023
  • Discretionary RAUM · $99.9M to $92.9M
    Feb 22, 2022 to Mar 23, 2023
  • HNW RAUM · $88.3M to $88.5M
    Feb 22, 2022 to Mar 23, 2023
Signals
1 dated events
  • S. Margaret Heydorn (Founding Partner) no longer on Schedule A of H•••••• S•••• C•••••• M••••••••• L•• (listed 2023-03-23, absent 2024-03-27)
    Mar 27, 2024 · Control person left · inference
Across DFX
shared identifiers only, never a name match
No identifier-backed link to the venture, private equity, family office or sponsor graphs.
How to reach
public business contact points only, each with its source
Business phone
914-752-5300reportedpublished by the firm, firm site, Sep 16, 2026
Firm profile
linkedin.com/company/heydorn-capital-managementreportedpublic record, Form ADV, Mar 12, 2026
Website
H••••••S••••.COMreportedpublic record, Form ADV, Mar 12, 2026
Principal office phone
914-752-5300reportedpublic record, Form ADV, Mar 12, 2026
Provenance
Form ADV
SEC filing data 2011 to 2024 and the monthly roster 2025 onreportedadviserinfo.sec.gov
Advisors
IAPD individual compilation feed, dailyreportedadviserinfo.sec.gov
Class
Independent wealth managerderiveda rule over Items 5.D and 7.A
RAUM per advisor
$71.0Mderivedfirm RAUM over the IAPD count; not a book size
Loaded
Sep 14, 2026