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Plinth

· Private foundation

The Duke of Omnium Fund

Its FY2025 filing reports that it accepted unsolicited grant applications.

$205k
Granted FY2025still arriving
35
Grants FY2025still arriving
6
States reached
$54k
Largest
01What you fund
0197% classified

What you funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year — across FY20202025.

Education$683kArts & Culture$416kInternational$176kSocial Science$115kEnvironment$81kScience & Tech$75kAnimals$60kHealth$46kOther$0
02FY2025 · 35 grants

Where the money goes

Your grants by size, and where they go.

By grant size · FY2025

  • Under $10k27 grants · $39k
  • $10k–50k7 grants · $112k
  • $50k–250k1 grant · $54k
$1,000
Median grant
6
States reached
$2.7M
Total assets
Largest grants
RecipientAmount
President and Fellows of Harvard College$54,000
Rare Book School$35,000
Thomas Jefferson Foundation$25,000
Metropolitan Museum of Art$12,000
Rising Phoenix Conservation Inc$10,000
Henry L Ferguson Museum$10,000
Harvard Business School$10,000
American Friends of the Musee dOrsay$10,000
NextGen Face Inc$5,000
University of Virginia$5,000
Holderness School$2,500
Speare Memorial Hospital$2,500
National Education Equity Lab$2,500
Ubuntu Education Fund$2,500
Island Health Project$2,500
02The need
03

Do your dollars go where the need is?

Each grant placed by the hardship in its grantee’s ZIP, then read against the area’s typical level.

show:

Your human-services grants (FY25–25, $5k) land where the poverty rate runs at 17%, against an area that typically sits at 9%. 100% of those dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-need ZIPs.

area typical 9%NextGen Face Inc: $5k → 17%0%20%40%50%more need →
grant to an above-average-need area below average· circle size = grant amount

Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty linein the grantee’s ZIP, averaged from the tracts in that ZIP; grantee ZIP can differ from where services are delivered.

Which US states your grants reach

NH
IL
NY
MA
CT
CA
VA
TX

US grants placed by each grantee’s ZIP, which can differ from where services are actually delivered. Need from public data — U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA — shown as context about the area, never attributed to your giving.

03Your edge
repeat funding

Who you back again

Which organizations you funded more than once, and which you funded a single time. Each grantee is matched to its own filings.

95%of every dollar goes to organizations you’ve funded before.
$952k · 30 repeat orgs$51k to everyone else

And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +27% since the first grant, against +22% for the ones you funded once.

30 repeat relationships — 28 still active in FY2025, 2 since wound down; 5 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

30
4

Total granted

$952k
$28k

Median revenue growth · since first grant

+27%
+22%

Still filing today

73%
100%

New vs renewed · share of each year

In FY2025, 84% of grant dollars renewed an existing relationship; $24k went to new ones.

50%100%’20’21’22’23’24’25
RenewedFirst-time

Where new relationships form · theme of each grantee’s first grant

’20’21’22’23’24’25
EducationArts & CultureEnvironmentHealthAnimalsPublic Safety & DisasterOther

First-time = a grantee’s first year in your filing window; renewed = funded in an earlier year too. As a portfolio matures the renewed share naturally climbs — once funded, an org stays “renewable” — so the signal is the years that buck it (a new-grantee intake wave). The earliest year is left-censored: relationships that predate the data read as “new.” Theme is the grantee’s IRS cause.

Backed again, and grew

  • RP
    RISING PHOENIX CONSERVATION INC
    6× · 2020–2025 · $60k · revenue +301%
  • SL
    SQUAM LAKES CONSERVATION SOCIETY
    6× · 2020–2025 · $56k · revenue +22%
  • HL
    Henry L Ferguson Museum
    6× · 2020–2025 · $45k · revenue +207%

Funded once

  • LM
    LAWRENCE MEMORIAL HOSPITAL INC
    one grant, 2022 · $10k · revenue +9%
  • MS
    MILLBROOK SCHOOLgraduated
    one grant, 2022 · $10k · revenue +58%
  • PC
    PARK CHILDREN'S DAY SCHOOL
    one grant, 2023 · $5k · revenue +22%

Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.

04Your field

The map has a center of gravity: the average direction from the rest of the sector toward the organizations the foundation funds — the shape of its giving. Scoring every nonprofit along that direction surfaces the ones that look most like the portfolio. These are the closest matchesthat aren’t grantees — a resemblance in what they say they do, not a recommendation.

1
President and Trustees of Bates College

Bates is a college of the liberal arts and sciences, and is a coeducational, nonsectarian, residential college with special commitments to academic rigor, and to assuring in all of its efforts the dignity of each individual, and access to…

Education
2
Saint Anselm College

Saint anselm is a catholic, benedictine college providing all of its students a distinctive liberal arts education that incorporates opportunities for professional and career preparation. it does so in a learning community that encourages…

Education
3
Northeast College of Health Sciences

Northeast college of health sciences (the college) is committed to academic excellence, leadership, and professional best practices in the health sciences.

Education
4
Boston Architectural College

The bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.

5
St Francis College

St. francis college is an independent, coeducational institution of higher education chartered by an act of the regents of the university of the state of new york on april 10, 1957.

Education
6
Hampden-Sydney College

Since 1775, the mission of Hampden-Sydney College has been to form good men and good citizens in an atmosphere of sound learning.

Education
7
Rhode Island School of Design

The mission of rhode island school of design, through its college and museum,is to educate its students and the public in the creation and (see schedule o)appreciation of works of art and design, to discover and transmit knowledge and to…

Education
8
University of New Haven

The University of New Haven is a student-centered comprehensive university with an emphasis on excellence in liberal arts and professional education. Our mission is to prepare our students to lead purposeful and fulfilling lives in a…

Education
9
Williams College

Williams College strives to achieve educational excellence by fostering a community of learning in collaboration with students, faculty, staff, devoted alumni and parents.

Education
10
Nantucket Conservation Foundation Inc

The nantucket conservation foundation owns, protects, and stewards over 9,000 acres of land and coastal shoreline, conserves nantucket's rare and significant natural resources, and engages in impactful ecological research to inform…

Environment
11
New York School of Interior Design

New york school of interior design provides the most innovative, immersive, and transformative interior design education in the world, demonstrating the impact of professionally designed interiors on the health, happiness, and well-being…

Education
12
Stony Brook Surgical Associates University Faculty Practice Corporation

Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.

Health

For reference, the grantee most central to the portfolio’s shape is American Friends of the Musee Dorsay and the most unlike its peers is Metropolitan Museum of Art. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.

For each theme you fund, this compares how the sector’s money is shifting with how your own giving is shifting.

← shrinkinggrowing →↓ leaning in → pulling backsteadyCommunity FoundationsLocal History MuseumsPublic Library OperationsVolunteer Fire & Ems Servic…Faith-Based Liberal Arts Co…Independent K-12 SchoolsHealth Access Advocacy and …Environmental Conservation …
the sector your giving your giving is ahead of the sector the sector’s ahead of you· dot size = how much the theme matters to each side
Ordered by the change in your giving — leaning in on top, pulling back at the bottom. The bar between the two dots is how out of step you are with the sector. Hover any row for detail.

Sector change and giving change are each shown relative to their own range, growing (right) or shrinking (left); both normalized, so inflation isn’t mistaken for growth.

Your grantees are a median of 52 years old; the field is 16. You back the established end — and your money leans older still.

THE FIELDby orgYOUR GRANTEESby number22%0%<5yr14%9%5–10yr19%9%10–20yr16%19%20–35yr13%16%35–55yr16%47%55yr+
THE FIELDby orgYOUR MONEYby value22%0%<5yr14%5%5–10yr19%1%10–20yr16%21%20–35yr13%23%35–55yr16%50%55yr+

The field is 22% startups (under 5 years old) — 0% of your grantees by number, and just 0% of your money.

Closures · last 5 years

The orgs you fund almost never close 0.0% lost their exemption, against 13% of the field you don’t fund.

orgs you fund
0.0%0/36
the rest of the field
13%
240,396/1,819,529

Age = years since IRS exemption (a founding proxy). “Closed” = auto-revocation for 3 years of non-filing — a floor on closure, not proof, and bigger established orgs lapse least. Association, not causation.

04the grantee network

35 grantees tracked through their own filings, 2017–2025.

Each one resolved to its own IRS returns and tracked year by year — your grant beside their revenue from every source. Association, dated; never a causal claim.

Counted here: distinct organizations you funded across 20172025, not grant rows in a single year — so this will not match the grant count on the cover. 35 of the 44 grantees resolved in that span have returns of their own we could reconcile; the rest are funded organizations whose filings we could not track year by year.

0
Load-bearing (≥25% of a budget)
6
Early backer (in before they grew)
35/35
Grantees still filing
26/35
Grew since you first funded

Where your money sits — by cause, then by grantee

President and Fellows of Harvard College — $487,380 · EducationPresident and Fellows of Harvard Colle…+12 more — $87,500 · Education+12 moreHarvard Business School — $115,000 · OtherHarvard Business SchoolHarvard College — $102,000 · OtherHarvard CollegeRare Book School — $80,000 · OtherRare Book SchoolRadcliffe Institute for Advanced Study — $75,000 · OtherRadcliffe Institute for Adv…+11 more — $33,250 · Other+11 moreTHOMAS JEFFERSON FOUNDATION INC — $207,500 · Arts & CultureTHOMAS JEFFERSON FOUND…Henry L Ferguson Museum — $45,000 · Arts & CultureHenry L Ferguson Museu…METROPOLITAN MUSEUM OF ART — $34,000 · Arts & CultureMETROPOLITAN MUSEUM OF…AMERICAN FRIENDS OF VERSAILLES — $29,500 · Arts & CultureAMERICAN FRIENDS OF VE…+2 more — $19,500 · Arts & Culture+2 moreCHARITIES AID FOUNDATION AMERICA — $175,000 · PhilanthropyCHARITIES AI…New Hampshire Charitable Foundation — $10,000 · PhilanthropyNew Hampshir…SQUAM LAKES CONSERVATION SOCIETY — $56,000 · EnvironmentSQUAM LAKES ASSOCIATION — $16,000 · EnvironmentSQUAM LAKES NATURAL SCIENCE CENTER — $6,000 · EnvironmentFISHERS ISLAND CONSERVANCY INC — $3,000 · EnvironmentRISING PHOENIX CONSERVATION INC — $60,000 · AnimalsISLAND HEALTH PROJECT INC — $16,000 · HealthSpeare Memorial Hospital — $15,000 · HealthLAWRENCE MEMORIAL HOSPITAL INC — $10,000 · Health
Education$574,880Other$405,250Arts & Culture$335,500Philanthropy$185,000Environment$81,000Animals$60,000Health$41,000

Each org by its size and your share of it — top-left is where you’re load-bearing

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ your share of their budgetPresident and Fellows of Harvard College — $487,380 over 3y, 0.0% of budgetTHOMAS JEFFERSON FOUNDATION INC — $207,500 over 6y, 0.1% of budgetCHARITIES AID FOUNDATION AMERICA — $175,000 over 5y, 0.0% of budgetRISING PHOENIX CONSERVATION INC — $60,000 over 6y, 6.4% of budgetSQUAM LAKES CONSERVATION SOCIETY — $56,000 over 6y, 1.5% of budgetHenry L Ferguson Museum — $45,000 over 6y, 1.0% of budgetMETROPOLITAN MUSEUM OF ART — $34,000 over 3y, 0.0% of budgetAMERICAN FRIENDS OF VERSAILLES — $29,500 over 6y, 5.7% of budgetISLAND HEALTH PROJECT INC — $16,000 over 6y, 0.4% of budgetSQUAM LAKES ASSOCIATION — $16,000 over 6y, 0.4% of budgetUBUNTU PATHWAYS INC — $15,000 over 6y, 0.2% of budgetSpeare Memorial Hospital — $15,000 over 6y, 0.0% of budgetTHE AMERICAN UNIVERSITY OF ROME — $14,500 over 4y, 0.1% of budgetST BERNARD'S SCHOOL INC — $12,000 over 6y, 0.0% of budgetLAWRENCE MEMORIAL HOSPITAL INC — $10,000 over 1y, 0.0% of budgetNew Hampshire Charitable Foundation — $10,000 over 1y, 0.0% of budgetMILLBROOK SCHOOL — $10,000 over 1y, 0.0% of budgetAMERICAN FRIENDS OF THE MUSEE DORSAY — $10,000 over 1y, 0.5% of budgetTHE LIGHTHOUSE WORKS INC — $9,500 over 6y, 0.4% of budgetHOLDERNESS SCHOOL — $7,500 over 6y, 0.0% of budgetSQUAM LAKES NATURAL SCIENCE CENTER — $6,000 over 6y, 0.0% of budgetTrustees of Dartmouth College — $6,000 over 6y, 0.0% of budgetTHE CHAPIN SCHOOL LTD — $6,000 over 6y, 0.0% of budgetWHEATON COLLEGE — $6,000 over 6y, 0.0% of budgetNEXTGEN FACE INC — $5,000 over 1y, 1.1% of budgetPARK CHILDREN'S DAY SCHOOL — $5,000 over 1y, 0.1% of budgetFISHERS ISLAND CONSERVANCY INC — $3,000 over 6y, 0.3% of budgetCENTRAL PARK TRACK CLUB CORPORATION — $2,500 over 1y, 0.5% of budgetNational Education Opportunity Network Inc — $2,500 over 1y, 0.0% of budgetTHE BREARLEY SCHOOL — $1,500 over 6y, 0.0% of budgetFISHERS ISLAND FIRE DEPARTMENT — $1,500 over 6y, 0.1% of budgetFISHERS ISLAND LIBRARY ASSOCIATION — $1,500 over 6y, 0.1% of budgetISLAND PEOPLES PROJECT — $1,500 over 6y, 0.4% of budgetMYRIAD USA INC — $1,000 over 1y, 0.0% of budgetTuxedo Park School — $1,000 over 1y, 0.0% of budget
Go grantee by grantee — a decade per org, and how each moved after you funded them

A decade per grantee — revenue shaded, your grants as bars, all rows on one timeline.

  • Who funds President and Fellows of Harvard College
  • Who funds THOMAS JEFFERSON FOUNDATION INC
  • Who funds CHARITIES AID FOUNDATION AMERICA
  • Who funds RISING PHOENIX CONSERVATION INC
  • Who funds SQUAM LAKES CONSERVATION SOCIETY
  • Who funds Henry L Ferguson Museum
  • Who funds METROPOLITAN MUSEUM OF ART
  • Who funds AMERICAN FRIENDS OF VERSAILLES
  • Who funds ISLAND HEALTH PROJECT INC
  • Who funds SQUAM LAKES ASSOCIATION
  • Who funds UBUNTU PATHWAYS INC
  • Who funds Speare Memorial Hospital
  • Who funds THE AMERICAN UNIVERSITY OF ROME
  • Who funds ST BERNARD'S SCHOOL INC
  • Who funds LAWRENCE MEMORIAL HOSPITAL INC
  • Who funds New Hampshire Charitable Foundation
  • Who funds MILLBROOK SCHOOL
  • Who funds AMERICAN FRIENDS OF THE MUSEE DORSAY
  • Who funds THE LIGHTHOUSE WORKS INC
  • Who funds HOLDERNESS SCHOOL
  • Who funds SQUAM LAKES NATURAL SCIENCE CENTER
  • Who funds Trustees of Dartmouth College
  • Who funds THE CHAPIN SCHOOL LTD
  • Who funds WHEATON COLLEGE
  • Who funds NEXTGEN FACE INC
  • Who funds PARK CHILDREN'S DAY SCHOOL
  • Who funds FISHERS ISLAND CONSERVANCY INC
  • Who funds CENTRAL PARK TRACK CLUB CORPORATION
  • Who funds National Education Opportunity Network Inc
  • Who funds THE BREARLEY SCHOOL
  • Who funds FISHERS ISLAND FIRE DEPARTMENT
  • Who funds FISHERS ISLAND LIBRARY ASSOCIATION

The grantmakers whose grantees overlap with yours far more than size alone predicts. Each orbits closer the stronger the alignment; the arcs between them show where they also fund each other. Here it reads as a tightly interlocked camp — most of these funders back each other's grantees too.

The Frederic C Hamilton Family FoundationCO22.1× affinity8 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: The Frederic C Hamilton Family Foundation · The Willinphila Foundation · The McCance Foundation · The Long Stems Foundation Inc · The Fairfield Foundation · The Sooner Foundation · The William C and Cindy L Scott Foundation · Trippe Fund Inc · Ederic Foundation Inc · Fleetwood Foundation · W L Lyons Brown Jr Charitable Foundation · The Emily Hall Tremaine Foundation Inc

Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. A research starting point: overlap is association, not proof of shared intent.

Government reliance of your grantees

Every dot is one organization The Duke of Omnium Fund funds. Left–right is the share of its income from government; up–down is the share from you. Bigger dots raise more. Filter to federal or a single department — and drag the year to watch it move.

2024
202122232425
no gov · 00%1%3%6%10%your share of their income ↑0%4%8%11%15%share of the org’s income from governmentmedian 0%
  • President and Fellows of Harvard College7% of income from government
  • Wheaton College0% of income from government
  • Lawrence Memorial Hospital Inc0% of income from government
no gov moneyreceives it· size = income
0get no government money at all
9report government grants on their 990 we could not trace to a source (not plotted)
0rely on government for over half their income
⤢ axis zoomed · 0–15%
typical government reliance, FY2025

Government income is each org’s traced federal awards (USASpending — grants and contracts) plus state payments (open checkbooks) as a share of its total revenue (IRS Form 990); the self-reported government-grant line (990 line 1e) is carried for cross-check: a grantee that reports government grants we could not trace to a source is left off the chart rather than shown as receiving none. An association, not a claim that your grant caused the public funding. Coverage is precision-first — a floor, not a census; state records exist for 9 states, so a grantee outside them shows no state figure (dimmed) rather than a false zero. Federal award amounts are obligations, which can span years, so a single-year share is indicative. 990 filings lag 12–24 months.

On method. Every financial figure here is read directly from IRS e-file XML — your own 990/990-PF and the multi-year returns of the 44 grantees we resolved across every year we hold, several hundred filings in all (a different count from the grant rows on the cover, which are one fiscal year)— each linked to its source. Grantee achievements and outcomes are each organization’s own program-service reporting (Form 990, Part III); we read these as association with sustained funding — the foundation is one of several forces — suppress low-confidence name matches rather than guess, and say so where a figure rests on a single grant or filing. Not everything on this page is a filed figure, and the difference matters. Filed is what you reported on your return. Official is another government record about an organization, such as a federal award or a charity register, joined by name where no shared identifier exists. Resolved is an identity we worked out where the filing named a recipient without an EIN, kept only above a measured confidence threshold. Computed is arithmetic over those, like themes, portfolio clusters and co-funder strength. Context is a statistic about a place rather than about an organization, which is what the need overlay is: it describes the area a grantee’s address sits in, not where its work lands. Inferred is drawn by a model from text, like the partnerships read out of public news and organization websites. Each is labeled where it appears. How we build these →

Generated from your IRS Form 990-PF e-file return for fiscal year 2025, released 2025. Filings run roughly 12–24 months behind; figures are dated accordingly.

Source object · view filing

More from the funding graph