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· Private foundation

The Helidoni Foundation Inc

Its FY2025 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.

$627k
Granted FY2025still arriving
13
Grants FY2025still arriving
1
States reached
$210k
Largest
01What it funds
0182% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2020 to 2025.

Environment$744kEducation$660kInternational$270kCommunity Improvement$205kScience & Tech$178kHealth$169kFood & Nutrition$115kArts & Culture$100kOther$0
02FY2025 · 13 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k3 grants · $15k
  • $10k–50k5 grants · $145k
  • $50k–250k5 grants · $468k
$35,000
Median grant
1
States reached
$7.9M
Total assets
Largest grants
RecipientAmount
Individual grant recipient$210,000
Individual grant recipient$100,000
Individual grant recipient$57,500
ECOGENIA$50,000
Individual grant recipient$50,000
BODOSSAKI FOUNDATION$42,954
HIGHER INCUBATOR GIVING GROWTH AND SUSTAINABILITY$35,000
ASTYLAB ASTIKI MI KERDOSKOPIKI ETAIREIA$30,000
PANATHENEA$25,000
STEWARDS$12,000
AMERICAN COLLEGE OF GREECE$5,000
DEON POLICY INSTITUTE$5,000
ATTIKOS OMILOS ANTISFAIRISEOS FILOTHEIS TENNIS CLUB$5,000
02The need
03

Does the money reach high-need areas?

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

US giving: 19% of grant dollars ($603k). The need read here covers only this US portion; the 81% that went abroad ($2.6M) is mapped below.

show:

Dollar for dollar, its grants (FY20–25) land where the poverty rate runs at 16%, against an area that typically sits at 11%. 90% of its dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 11%PAN MASS CHALLENGE: $2k → 7%MS SOCIETY: $5k → 8%COOPERATIVES FOR A BETTER WORLD: $25k → 8%DEON POLICY INSTITUTE: $5k → 16%DEREE ALBA: $5k → 17%FASHION REVOLUTION: $40k → 9%ATTIKOS OMILOS ANTISFAIRISEOS FILOTHEIS TENNIS CLUB: $5k → 11%PANATHENEA: $25k → 12%ACTIONAID: $5k → 14%SCHEMA LABS: $110k → 17%SOCIAL HACKER ACADEMY: $10k → 9%THE HELLENIC INITIATIVE: $250k → 17%THI VIA: $150k → 20%PROVIDENCE COLLEGE: $50k → 14%CHICAGO PARKS FOUNDATION: $500 → 14%TEDYS TEAM ORGANIZATION: $5k → 7%PMC DANA FARBER: $1k → 16%ATTIKOS OMILOS ANTISFAIRISEOS FILOTHEIS: $5k → 11%SCHEMA LABS: $58k → 17%NEXT FOR AUTISM: $13k → 17%THI VIA: $75k → 20%TEDYS TEAM ORGANIZATION: $1k → 7%DANA FARBER CANCER: $500 → 16%ENDRASY: $7k → 11%BROOKLINE CENTER FOR COMMUNITY HEALTH: $1k → 7%AMERICAN COLLEGE OF GREECE: $5k → 16%0%20%40%50%more need →
grant to an above-average-need area below average· circle size = grant amount
How this is measured
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty line in the grantee’s ZIP, averaged from the tracts in that ZIP.

Beyond the US: 81% of all-years giving ($2.6M)

1 country, by the recipient’s country on the filing.

grant dollars sentlessmore
Greece$2.6M · 56 grants
How this is measured
US grants placed by each grantee’s ZIP, which can differ from where services are delivered. Need from public data (U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA), shown as context about the area, never attributed to the funder’s giving. International giving is mapped by the recipient’s country from the same 990 filings; comparable need data isn’t available at that grain.
03Its grantees
repeat funding

Who it funds again

Organizations funded in more than one year, against those funded once.

71%of every dollar goes to organizations it has funded before.
$2.3M · 15 repeat orgs$912k to everyone else

15 repeat relationships: 6 still active in FY2025, 9 since wound down; 7 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

15
29

Total granted

$2.3M
$707k

Median revenue growth · since first grant

-30%
+42%

Still filing today

7%
28%

New vs renewed · share of each year

In FY2025, 67% of grant dollars renewed an existing relationship; $205k 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
HealthInternationalEducationArts & CultureRecreation & SportsOther
How this is measured
First-time means a grantee’s first year in the filing window; renewed means funded in an earlier year too. The renewed share climbs naturally as a portfolio matures, so the signal is a year that bucks it (a wave of new grantees). 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

  • IG
    Individual grant recipient
    4× · 2022–2025 · $745k
  • E
    ECOGENIA
    4× · 2022–2025 · $325k
  • IG
    Individual grant recipient
    2× · 2021–2022 · $225k

Funded once

  • HI
    HELLENIC INITIATIVE INC
    one grant, 2020 · $250k · revenue -1%
  • IG
    Individual grant recipient
    one grant, 2021 · $60k
  • IG
    Individual grant recipient
    one grant, 2020 · $51k
How this is measured

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

04Its field

Closest unfunded matches

The nonprofits that most resemble its grantees but are not funded by it, scored along the direction from the rest of the field toward the portfolio. A resemblance in what they say they do, not a recommendation.

1
Central Indiana Corporate Partnership Inc

Central indiana corporate partnership (cicp) is an alliance of indiana's business and research university leaders coming together to foster long-term prosperity for the region. cicp's mission is to transform the economy of indiana in order…

Community Improvement
2
Boston Architectural College

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

—
3
National Association of Corporate Directors

We empower directors and transform boards to be future ready.

Public Benefit
4
Institute for Protein Innovation Inc

The institute for protein innovation is advancing protein science to accelerate research and improve human health.

Health
5
Work on Climate

Supporting industry transformation towards climate-positive and make green careers transitions and driving the adoption of green workforce development practices broadly.

Environment
6
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
7
Ucsf Foundation Investment Company

The organization provides professional investment management services for endowed gifts and financial assets entrusted to the ucsf foundation.

Education
8
Dana-Farber Inc

The purpose and activities of dana-farber, inc. are to promote and support the exempt missions of dana-farber cancer institute and to provide investment management services.

Unclassified
9
MRIGlobal

To improve the lives of people through innovative scientific and engineering research.

Science & Tech
10
Dana-Farber Cancer Care Network Inc

The mission of Dana-Farber Cancer Care Network (DFCCN) is to promote and support, directly or indirectly, the interests and purposes of Dana-Farber Cancer Institute (DFCI).

Health
11
Massachusetts Institute of Technology

The mission of mit is to advance knowledge and educate students in science, technology, and other areas of scholarship that will best serve the nation and the world in the 21st century.

Education
12
International Biomedical Research Alliance

Our mission is to invest in and accelerate the development of the most promising future leaders in biomedical research with global impact.

Health
How this is measured
The grantee most central to the portfolio’s shape is As You Sow; the most unlike its peers is Dana-Farber Cancer Institute Inc. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
04the grantee network

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

Each grant beside the grantee’s revenue from every source, year by year.

How this is measured

Counted here: distinct organizations funded across 2017 to 2025, not grant rows in a single year, so this will not match the grant count on the cover. 11 of the 51 grantees resolved in that span have returns of their own we could reconcile.

Each grantee is resolved to its own IRS returns. Association, dated; never a causal claim.

0
Load-bearing (≥25% of a budget)
1
Early backer (in before they grew)
11/11
Grantees still filing
5/11
Grew since first funded

Where the money sits, by cause and then by grantee

Individual grant recipient: $745,000 · OtherIndividual grant recipientECOGENIA: $325,000 · OtherECOGENIAIndividual grant recipient: $225,000 · OtherIndividual grant recipientSTEWARDS: $187,000 · OtherSTEWARDSIndividual grant recipient: $167,500 · OtherIndividual grant recipientIndividual grant recipient: $150,000 · OtherIndividual grant recipient: $100,000 · Other+35 more: $930,364 · Other+35 moreHELLENIC INITIATIVE INC: $250,000 · InternationalHELLENIC …+2 more: $10,000 · InternationalPROVIDENCE COLLEGE: $50,000 · EducationCooperatives for a Better World: $25,000 · Arts & CultureNEXT FOR AUTISM INC: $12,500 · HealthTEDY'S TEAM INC: $6,000 · Health+1 more: $500 · HealthCHICAGO PARKS FOUNDATION: $500 · Recreation & Sports
Other$2,829,864International$260,000Education$50,000Arts & Culture$25,000Health$19,000Recreation & Sports$500

Each grantee by its size and the funder’s share of it; top left is load-bearing

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetHELLENIC INITIATIVE INC: $250,000 over 1y, 9.3% of budgetPROVIDENCE COLLEGE: $50,000 over 1y, 0.0% of budgetCooperatives for a Better World: $25,000 over 1y, 3.4% of budgetNEXT FOR AUTISM INC: $12,500 over 1y, 0.2% of budgetAS YOU SOW: $9,500 over 1y, 0.1% of budgetTEDY'S TEAM INC: $6,000 over 2y, 0.3% of budgetTHE AMERICAN COLLEGE OF GREECE: $5,000 over 1y, 0.0% of budgetDeon Policy Institute: $5,000 over 1y, 2.5% of budgetCHICAGO PARKS FOUNDATION: $500 over 1y, 0.0% of budgetDana-Farber Cancer Institute Inc: $500 over 1y, 0.0% of budget
Grantee by grantee: a decade per organization, before and after funding

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

  • Who funds HELLENIC INITIATIVE INC ↗
  • Who funds PROVIDENCE COLLEGE ↗
  • Who funds Cooperatives for a Better World ↗
  • Who funds NEXT FOR AUTISM INC ↗
  • Who funds AS YOU SOW ↗
  • Who funds TEDY'S TEAM INC ↗

Co-funders

Grantmakers whose grantees overlap with this funder’s far more than size alone predicts. Closer means stronger alignment; arcs show where they also fund each other. Here they form a set of overlaps that mostly run through this funder rather than between each other.

Fidelity Investments Charitable Gift FundMA6.1× affinity5 shared granteesties to 0 of 0Hover any node to trace its alignments.Compare side by side →

Open a dossier: Fidelity Investments Charitable Gift Fund

How this is measured
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. Overlap is association, not proof of shared intent.

How much its grantees rely on government

Each dot is one organization The Helidoni Foundation Inc funds: left to right is the share of its income from government, bottom to top the share from The Helidoni Foundation Inc. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 20%1%3%6%10%funder's share of their income ↑0%10%20%30%40%share of the org’s income from government →median 2%
  • Dana-Farber Cancer Institute Inc: 7% of income from government
  • The American College of Greece: 2% of income from government
  • Pan-Massachusetts Challenge Inc: 0% of income from government
no gov moneyreceives it· size = income
2get no government money at all
1report government grants on their 990 we could not trace to a source (not plotted)
0rely on government for over half their income
⤢ axis zoomed · 0–40%
typical government reliance, FY20–25
How this is measured
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 a grant caused the public funding. Coverage is precision-first, a floor rather than 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 to 24 months.

On method. Every financial figure here is read from IRS e-file XML, the funder’s own 990/990-PF, and from the multi-year returns of the 51 grantees we resolved, each linked to its source. Grantee outcomes are each organization’s own program-service reporting (Form 990, Part III), read as association with funding, never as caused by it. Low-confidence name matches are suppressed rather than guessed. How we build these →

How this is measured
Each figure carries one of six labels. Filed is what the funder reported on its 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.

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

Source object · view filing

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