A continuously maintained graph of U.S. family offices: identity, team, observed investments, public holdings, relationships and dated signals of change. Facts, inferences and estimates are labelled as such, with the source and the date, on every row. Unknown is printed as unknown.

Family office profile

Clark Estates Inc/ny

Clark Estates Inc/NY's SEC-registered business street address is One Rockefeller Plaza, 31st Floor, New York, NY 10020.Single family office (confirmed)identity confidence 85%Top 500 by research priority

Why this class: Clark Estates manages the Cooperstown-based Clark family's Singer Sewing Machine fortune (descendants of Edward Cabot Clark); Wikipedia ties the entity to family member Jane Forbes Clark II, and an independent obituary of a 23-year Clark Estates president calls it 'a renowned family office'..

Verified Sep 16, 2026 (2 days ago)
Last observed Sep 16, 2026 · 55 observations · 5 sources
3 people · 0 investments · 97 public positions · 176 events
Identity
85
high
Data depth
55
elevated
Freshness
100
high
Active deployment
0
low
Direct investing
0
low
External managers
0
low
Private markets
0
low
Sponsor-friendly
0
low
Real estate
0
low
Co-investment
0
low
Contactability
35
elevated
Mandate confidence
0
low

Twelve separate dimensions, each 0 to 100 from listed components. There is no single family office score; the components are in the evidence section.

Overview
Profile completeness 59% (high value, high value deep; the most valuable missing fact is direct investments)
identityclassificationwealth origincapital-scale evidencepeoplecontactsmandatedirect investmentsfund relationshipsco-investorssponsor relationshipsreal estatepublic holdingsrecent eventsprovenancefreshness
Classification
Single family office (confirmed)
Description
The Clark Estates, Inc. is described as a financial and business management company for the Clark family.
Headquarters
Clark Estates Inc/NY's SEC-registered business street address is One Rockefeller Plaza, 31st Floor, New York, NY 10020.
Office address
unknown
Business phone
unknown
Website
unknown
Year established
unknown
Assets under management
unknown
Foundation assets (IRS)
$53.9M across 2 related private foundations, per the IRS master file; the foundation's assets, not the office'sFact
Capital scale
Reported office AUM: unknown. 13F disclosed value $416M. Related foundation assets $53.9M. These are different facts and are never added together.
Form 13F
$416M across 97 positions, quarter ended Mar 31, 2026. Long 13(f) securities only; never the whole portfolio.Fact
Classification history
  • Sep 15, 2026Single family office (confirmed) 85%Clark Estates manages the Cooperstown-based Clark family's Singer Sewing Machine fortune (descendants of Edward Cabot Clark); Wikipedia ties the entity to family member Jane Forbes Clark II, and an independent obituary of a 23-year Clark Estates president calls it 'a renowned family office'.Factverifiedallotsego.com“Shortly after graduating, he joined The Clark Estates, a renowned family office where he worked for the next 42 years, the last 23 years as its president.”
  • Sep 13, 2026Single family office (probable) 60%Clark Estates is the New York office founded in 1946 to manage the business and financial interests of the Clark family (Singer fortune), alongside The Clark Foundation. (a family office database's profile, not the office or the press)Inferenceverifiedaltss.com“Clark Estates was founded in 1946 to manage the business and financial interests of the Clark family.”
  • Sep 13, 2026Single family office (probable) 55%a 13F filer on no adviser roster that files nothing but ownership forms, with 1 private foundation(s) at its own address holding $38,161,555: the shape of a single family office (structural inference, no self-description found)Inference
  • Sep 12, 2026Single family office (probable) 55%a 13F filer on no adviser roster that files nothing but ownership forms, with 1 private foundation(s) at its own address holding $30,007,964: the shape of a single family office (structural inference, no self-description found)Inference
  • Sep 12, 2026Candidate 30%13F filer that is on no adviser roster and is not institutional by name: could be an SFO, a corporate treasury or a trust companyInference
  • Sep 12, 2026Candidate 25%no rule matched; held as a candidate pending researchInference
Family and wealth origin
Family served
Clark family
Source of wealth
Clark family wealth traces to Edward Clark, who was Isaac Singer's business partner in the Singer Sewing Machine Company.
Operating company origin
unknown
Team
PersonTitleResponsibilityBusiness contactSource
Kevin S MoorePresidentLeadershipnone on recordbaseballhall.org Fact
Anthony FasanoTreasurerOperations and finance
phone: 2129776900 (published by the subject, Nov 10, 2025)
sec.gov Fact
Ryan QuiltyTreasurerOperations and finance
phone: 2129776900 (published by the subject, May 11, 2026)
sec.gov Fact
Former
Edward W. Stack, President, until Sep 16, 2026
Office contact points
Office address: ONE ROCKEFELLER PLAZA 31ST FL, New York, NY, 10020 (published by the subject) sec.gov
Investment mandate

inferred only: public equity book 416205017.0

Stated (their words, cited)
No cited statement of mandate on the record.
Observed (from the investment record)
No investments on the record yet, so nothing is observed.
Inferred (regulatory shape and team)
Public equity book
$416M Inference
13F table value, quarter ended 2026-03-31; long 13(f) securities only
Invests directly
unknown
Allocates to managers
unknown
Asset classes
unknown
Sectors
unknown
Geography
unknown
Check size
unknown
Direct investments
No substantiated direct investment on the record. Absence here is absence of evidence, not evidence of absence.
Fund and manager relationships

Funds held by the family's private foundation, from its Form 990-PF: the foundation reports each fund by name with its fair value. They are the foundation's holdings, never an amount the office itself committed.

FundManagerHeld throughFoundation's fair valuePeriodBasis
Private EquitySHIPPY FOUNDATION$20.5MDec 31, 2024Inference at the office's address apps.irs.gov
Private Equity SecuitiesFERNLEIGH FOUNDATION$2.4MDec 31, 2024Inference at the office's address apps.irs.gov
Public stakes and holdings
Form 13F holdings

Top 40 positions of 97 for the quarter ended Mar 31, 2026; $334M shown of $416M reported. Long 13(f) securities only. Never presented as the whole portfolio.

IssuerClassValueSharesWeight
EA SERIES TRUSTEUCLIDEAN FUNDAM$77.0M2,119,48218.5%
DISNEY WALT COCOM$19.3M200,0004.6%
SOLVENTUM CORPCOM SHS$18.9M290,0004.5%
UNILEVER PLCSPON ADR NEW$17.4M305,0004.2%
WARNER MUSIC GROUP CORPCOM CL A$16.6M650,0004.0%
IQVIA HLDGS INCCOM$16.2M95,2003.9%
AMRIZE LTDSHS$16.0M285,0003.8%
SONY GROUP CORPSPONSORED ADR$14.3M691,6003.4%
HALEON PLCSPON ADS$14.0M1,400,0003.4%
MEDTRONIC PLCSHS$13.4M155,0003.2%
BAUSCH PLUS LOMB CORPCOMMON SHARES$13.1M825,0003.2%
AVANOS MED INCCOM$11.8M845,0002.8%
SHATTUCK LABS INCCOM$9.5M1,475,6482.3%
SMITH & NEPHEW PLCSPDN ADR NEW$7.0M220,0001.7%
GILEAD SCIENCES INCCOM$3.6M26,0220.9%
ALTRIA GROUP INCCOM$3.2M48,6130.8%
LANTHEUS HLDGS INCCOM$3.2M42,0000.8%
ZIFF DAVIS INCCOM$2.9M69,7000.7%
TD SYNNEX CORPORATIONCOM$2.9M17,2990.7%
HALOZYME THERAPEUTICS INCCOM$2.9M44,8680.7%
NETSCOUT SYS INCCOM$2.8M88,9120.7%
CATALYST PHARMACEUTICALS INCCOM$2.8M113,9180.7%
INDIVIOR PHARMACEUTICALS INCCOM$2.8M92,3000.7%
BIOGEN INCCOM$2.8M15,3000.7%
PEDIATRIX MEDICAL GROUP INCCOM$2.8M129,0000.7%
PFIZER INCCOM$2.7M96,7500.7%
3D SYS CORP DELCOM NEW$2.7M1,418,6140.6%
BRISTOL-MYERS SQUIBB COCOM$2.6M43,0000.6%
EXPEDIA GROUP INCCOM NEW$2.6M11,1000.6%
WILEY JOHN & SONS INCCL A$2.6M67,0000.6%
TERADATA CORP DELCOM$2.5M97,7000.6%
CROCS INCCOM$2.4M28,9000.6%
BOOZ ALLEN HAMILTON HLDG CORCL A$2.4M30,5500.6%
INCYTE CORPCOM$2.4M25,0000.6%
BORGWARNER INCCOM$2.3M43,0000.6%
VIATRIS INCCOM$2.3M171,5660.6%
KORN FERRYCOM NEW$2.3M36,8000.6%
WEX INCCOM$2.3M15,1000.6%
MATCH GROUP INC NEWCOM$2.3M74,8000.6%
STRATEGIC ED INCCOM$2.3M27,6000.6%
Changes between the last two quarters
  • Mar 31, 2026 Clark Estates Inc/ny exited Halliburton Co (was $2,376,666, 84,100 shares) sec.gov
  • Mar 31, 2026 Clark Estates Inc/ny exited Lear Corp (was $2,629,039, 22,941 shares) sec.gov
  • Mar 31, 2026 Clark Estates Inc/ny exited Middleby Corp (was $2,750,395, 18,500 shares) sec.gov
  • Mar 31, 2026 Clark Estates Inc/ny exited Minerals Technologies Inc (was $2,078,395, 34,100 shares) sec.gov
  • Mar 31, 2026 Clark Estates Inc/ny exited Oshkosh Corp (was $2,436,594, 19,395 shares) sec.gov
  • Mar 31, 2026 Clark Estates Inc/ny exited Rentokil Initial Plc (was $5,892,000, 200,000 shares) sec.gov
  • Mar 31, 2026 Clark Estates Inc/ny exited SLB Limited (was $2,494,700, 65,000 shares) sec.gov
  • Mar 31, 2026 Clark Estates Inc/ny exited United Parks & Resorts Inc (was $10,890,000, 300,000 shares) sec.gov
  • Mar 31, 2026 Clark Estates Inc/ny exited Tegna Inc (was $2,259,518, 116,410 shares) sec.gov
  • Mar 31, 2026 Clark Estates Inc/ny exited Teleflex Incorporated (was $2,282,148, 18,700 shares) sec.gov
  • Mar 31, 2026 Clark Estates Inc/ny exited Indivior Plc (was $3,311,724, 92,300 shares) sec.gov
  • Mar 31, 2026 Clark Estates Inc/ny opened a $2,185,289 position in Adobe Inc (8,990 shares) sec.gov
  • Mar 31, 2026 Clark Estates Inc/ny opened a $2,211,640 position in CDW Corp (18,275 shares) sec.gov
  • Mar 31, 2026 Clark Estates Inc/ny opened a $2,151,935 position in Deckers Outdoor Corp (21,500 shares) sec.gov
  • Mar 31, 2026 Clark Estates Inc/ny opened a $2,191,560 position in Dorman Prods Inc (21,000 shares) sec.gov
  • Mar 31, 2026 Clark Estates Inc/ny opened a $2,562,879 position in Expedia Group Inc (11,100 shares) sec.gov
  • Mar 31, 2026 Clark Estates Inc/ny opened a $2,008,680 position in Frontdoor Inc (38,000 shares) sec.gov
  • Mar 31, 2026 Clark Estates Inc/ny increased Solventum Corp 215,000 -> 290,000 shares ($17,036,600 -> $18,937,000) sec.gov
  • Mar 31, 2026 Clark Estates Inc/ny increased Sony Group Corp 250,000 -> 691,600 shares ($6,400,000 -> $14,316,120) sec.gov
  • Mar 31, 2026 Clark Estates Inc/ny increased Unilever Plc 160,000 -> 305,000 shares ($10,464,000 -> $17,375,850) sec.gov
  • Mar 31, 2026 Clark Estates Inc/ny increased Warner Music Group Corp 275,000 -> 650,000 shares ($8,434,250 -> $16,601,000) sec.gov
  • Mar 31, 2026 Clark Estates Inc/ny opened a $2,094,670 position in Ss&c Tech Hldgs (31,000 shares) sec.gov
  • Mar 31, 2026 Clark Estates Inc/ny reduced Smith & Nephew Plc 300,000 -> 220,000 shares ($9,843,000 -> $6,991,600) sec.gov
  • Mar 31, 2026 Clark Estates Inc/ny opened a $2,083,455 position in Taskus Inc (310,500 shares) sec.gov
  • Mar 31, 2026 Clark Estates Inc/ny opened a $2,108,400 position in Qualys Inc (24,000 shares) sec.gov
Real estate
No documented real estate ownership link. A property is attributed to an office only through a documented control relationship, never from a surname.
Co-investors
No co-investor on the record.
Independent sponsor relationships
No cited relationship to an independent sponsor.
Signals and timeline

Most significant first: what kind of change it is, its size, whose change it is, and how recent. 5 events. 13F position changes are under Public stakes and holdings.

  • Sep 13, 2026Classification changedClark Estates Inc/ny: PROBABLE_SFO -> PROBABLE_SFO (Clark Estates is the New York office founded in 1946 to manage the business and financial interests of the Clark family (Singer fortune), alongside The Clark Foundation. (a family office database's profile, not the office or the press))ClassificationInferencealtss.com
  • Sep 12, 2026Classification changedClark Estates Inc/ny: CANDIDATE_FAMILY_OFFICE -> PROBABLE_SFO (a 13F filer on no adviser roster that files nothing but ownership forms, with 1 private foundation(s) at its own address holding $30,007,964: the shape of a single family office (structural inference, no self-description found))ClassificationInferenceno URL
  • Sep 11, 2026Classification changedClark Estates Inc/ny: CANDIDATE_FAMILY_OFFICE -> CANDIDATE_FAMILY_OFFICE (13F filer that is on no adviser roster and is not institutional by name: could be an SFO, a corporate treasury or a trust company)ClassificationInferenceno URL
  • Sep 11, 2026Office discoveredClark Estates Inc/ny files Form 13F (non_adviser_filer, $412,101,010 in 98 positions)DiscoveryInferencesec.gov
  • Sep 15, 2026Classification changedClark Estates Inc/ny: PROBABLE_SFO -> CONFIRMED_SFO (Clark Estates manages the Cooperstown-based Clark family's Singer Sewing Machine fortune (descendants of Edward Cabot Clark); Wikipedia ties the entity to family member Jane Forbes Clark II, and an independent obituary of a 23-year Clark Estates president calls it 'a renowned family office'.)ClassificationFactallotsego.com
Sources and evidence

Every observation behind this profile: the value, when it was effective, the source, the quote where there is one, and whether it is a fact, an inference or an estimate. 55 shown.

Score components
Freshness
+100 days since the newest source-dated fact or analyst verification (1 days)
Contactability
+15 named decision-makers (Kevin S Moore (President))
+20 verified business phones (2)
Data confidence
+10 description
+10 people
+5 public holdings
+10 regulatory record
+20 independent sources (5 sources)
Active deployment
no components; scored 0
Exists confidence
+50 regulatory identifier (CIK, CRD or EIN)
+30 independent sources (5 sources)
+30 analyst-verified
Research priority
+13 capital scale (largest of 13F, RAUM, AUM, foundation assets) ($416,205,017)
+15 single family or family investment company
+2 no website known (research would find one)
+0 rank (190)
Mandate confidence
no components; scored 0
Identity confidence
+85 classification (CONFIRMED_SFO (Clark Estates manages the Cooperstown-based Clark family's Singer Sewing Machine fortune (descendants of Edward Cabot Clark); Wikipedia ties the entity to family member Jane Forbes Clark II, and an independent obituary of a 23-year Clark Estates president calls it 'a renowned family office'.))
Real estate propensity
no components; scored 0
Co investment propensity
no components; scored 0
Family identity confidence
+60 wealth origin or operating company on the record
+40 family named (Clark family)
Private markets propensity
no components; scored 0
Current activity confidence
+25 filed a 13F for a recent quarter (the entity operates; not deployment)
+25 a source-dated fact within 12 months (5 days)
External manager propensity
no components; scored 0
Direct investment propensity
no components; scored 0
Independent sponsor propensity
no components; scored 0
FactValueEffectiveSourceClass
DescriptionThe Clark Estates, Inc. is described as a financial and business management company for the Clark family.
“Kevin S. Moore is president of The Clark Estates, Inc., a financial and business management company.”
Sep 16, 2026DFX analyst research (General-assisted, every claim URL-cited) baseballhall.orgFact
DescriptionThe Clark Estates, Inc. is described as a financial and business management company for the Clark family.
“Kevin S. Moore is president of The Clark Estates, Inc., a financial and business management company.”
Sep 15, 2026DFX analyst research (General-assisted, every claim URL-cited) baseballhall.orgFact
Edgar entity typeotherSep 12, 2026SEC EDGAR entity submissions record (filer profile: forms filed, SIC, entity type, website) sec.govFact
Edgar forms13F-HR,13F-HR/A,N-PXSep 12, 2026SEC EDGAR entity submissions record (filer profile: forms filed, SIC, entity type, website) sec.govFact
Edgar fts mention100Sep 12, 2026SEC EDGAR full-text search (a filing sentence that says what an entity is, quoted with its URL) efts.sec.govFact
Family servedClark family
“In 2007, in the possession of The Clark Estates Inc. (overseen by granddaughter Jane Forbes Clark II), it was auctioned at Sotheby's New York for $25,800,000.”
n/aDFX analyst research (General-assisted, every claim URL-cited) en.wikipedia.orgFact
Filing addressONE ROCKEFELLER PLAZA 31ST FL, New York, NY, 10020Mar 31, 2026SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
Filing addressONE ROCKEFELLER PLAZA 31ST FL, New York, NY, 10020Dec 31, 2025SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
Filing addressONE ROCKEFELLER PLAZA 31ST FL, New York, NY, 10020Sep 30, 2025SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
Filing addressONE ROCKEFELLER PLAZA 31ST FL, New York, NY, 10020Jun 30, 2025SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
Filing addressONE ROCKEFELLER PLAZA 31ST FL, New York, NY, 10020Mar 31, 2025SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
Filing addressONE ROCKEFELLER PLAZA 31ST FL, New York, NY, 10020Dec 31, 2024SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
13F filerYMar 31, 2026SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
13F filerYDec 31, 2025SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
13F filerYSep 30, 2025SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
13F filerYJun 30, 2025SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
13F filerYMar 31, 2025SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
13F filerYDec 31, 2024SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
13F admission signalnon_adviser_filerDec 31, 2025SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
Other managers on 13F0Mar 31, 2026SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
Other managers on 13F0Dec 31, 2025SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
Other managers on 13F0Sep 30, 2025SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
Other managers on 13F0Jun 30, 2025SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
Other managers on 13F0Mar 31, 2025SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
Other managers on 13F0Dec 31, 2024SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
Latest 13F quarter2026-03-31Mar 31, 2026SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
Latest 13F quarter2025-12-31Dec 31, 2025SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
Latest 13F quarter2025-09-30Sep 30, 2025SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
Latest 13F quarter2025-06-30Jun 30, 2025SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
Latest 13F quarter2025-03-31Mar 31, 2025SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
Latest 13F quarter2024-12-31Dec 31, 2024SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
13F positions97Mar 31, 2026SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
13F positions98Dec 31, 2025SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
13F positions99Sep 30, 2025SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
13F positions97Jun 30, 2025SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
13F positions94Mar 31, 2025SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
13F positions92Dec 31, 2024SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
13F table value$416MMar 31, 2026SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
13F table value$412MDec 31, 2025SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
13F table value$438MSep 30, 2025SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
13F table value$446MJun 30, 2025SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
13F table value$472MMar 31, 2025SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
13F table value$517MDec 31, 2024SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
HeadquartersClark Estates Inc/NY's SEC-registered business street address is One Rockefeller Plaza, 31st Floor, New York, NY 10020.
“ONE ROCKEFELLER PLAZA 31ST FL”
Sep 16, 2026DFX analyst research (General-assisted, every claim URL-cited) sec.govFact
HeadquartersClark Estates Inc/NY's SEC-registered business street address is One Rockefeller Plaza, 31st Floor, New York, NY 10020.
“ONE ROCKEFELLER PLAZA 31ST FL”
Sep 15, 2026DFX analyst research (General-assisted, every claim URL-cited) sec.govFact
HeadquartersNew York, NYMar 31, 2026SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
HeadquartersNew York, NYDec 31, 2025SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
HeadquartersNew York, NYSep 30, 2025SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
HeadquartersNew York, NYJun 30, 2025SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
HeadquartersNew York, NYMar 31, 2025SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
HeadquartersNew York, NYDec 31, 2024SEC Form 13F data sets (quarterly holdings, all filers) sec.govFact
Office type (stated)single_family_office
“Shortly after graduating, he joined The Clark Estates, a renowned family office where he worked for the next 42 years, the last 23 years as its president.”
Sep 15, 2026DFX analyst research (General-assisted, every claim URL-cited) allotsego.comFact
Source of wealthClark family wealth traces to Edward Clark, who was Isaac Singer's business partner in the Singer Sewing Machine Company.
“was Isaac Singer's partner in the Singer Sewing Machine Company”
Sep 16, 2026DFX analyst research (General-assisted, every claim URL-cited) en.wikipedia.orgFact
Source of wealthClark family wealth traces to Edward Clark, who was Isaac Singer's business partner in the Singer Sewing Machine Company.
“was Isaac Singer's partner in the Singer Sewing Machine Company”
Sep 15, 2026DFX analyst research (General-assisted, every claim URL-cited) en.wikipedia.orgFact
Website searchnot_foundSep 12, 2026DFX model output (classification rules, scores, mandates, matches) no URLInference