· Private foundation
Calf Island Foundation
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.
What you funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2017–2025.
Where the money goes
Your grants by size, and where they go.
| Recipient | Amount |
|---|---|
| ACADEMY FOR TEACHERS | $10,000 |
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.
Your human-services grants (FY19–24, $18k) land where the poverty rate runs at 16%, against an area that typically sits at 11%. 80% of those dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-need ZIPs.
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
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.
Where the work is directed
The same grants, placed two ways — where each recipient sits, and where its stated purpose earmarks the money.
About 13% of Calf Island Foundation’s grant dollars are earmarked, by their stated purpose, for a different county than the recipient’s own address — money that lands at a nonprofit in one place but is meant to do its work in another.
Recipient view: each grant at its grantee’s ZIP, mapped to a county. Directed view: each grant at the county its stated purpose names, falling back to the recipient’s county when the purpose names no place; US grants only. A county shows only if it carries the top 95% of that view’s dollars. Purposes are read from the foundation’s own 990 grant descriptions.
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.
And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +41% since the first grant, against +8% for the ones you funded once.
14 repeat relationships — 1 still active in FY2025, 13 since wound down.
How the two cohorts compare
Organizations
Total granted
Median revenue growth · since first grant
Still filing today
New vs renewed · share of each year
In FY2025, 100% of grant dollars renewed an existing relationship; $0 went to new ones.
Where new relationships form · theme of each grantee’s first grant
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
- GHGREENWICH HOSPITAL2× · 2019–2020 · $50k · revenue +36%
- TATHE ACADEMY FOR TEACHERS INC4× · 2019–2025 · $40k · revenue +90%
- TITHE IRISH GEORGIAN SOCIETY INC3× · 2019–2024 · $35k · revenue +41%
Funded once
- GEGREENWICH EMERGENCY MEDICAL SERVICE INCgraduatedone grant, 2020 · $6k · revenue +27%
- HHHYDE HALL INCone grant, 2019 · $6k · revenue -8%
WOMEN IN NEED INCone grant, 2024 · $5k · revenue 0%
Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.
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.
To educate students to be ethical and socially responsible leaders in a global community.
The mission of the jewish museum is to collect, preserve, exhibit and interpret art and jewish culture. see schedule o for more information.
The museum's mission statement is: "to discover, interpret, and disseminate - through scientific research and education - knowledge about human cultures, the natural world, and the universe."
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…
The bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.
The governors island corporation, doing business as the trust for governors island, is the 501(c)(3) not-for-profit organization created by the city of new york and charged with the planning, redevelopment and ongoing operations of 150…
The Morgan Library & Museum celebrates and shares the history and process of human creativity from antiquity to the present day through the preservation, study, and interpretation of a dynamic and growing collection.
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…
The mission of the brooklyn institute of arts and sciences, d/b/a brooklyn museum (the "museum") is to bring people together through art and experiences that inspire celebration, compassion, courage, and the will to act. (see schedule o).
The Frick Collection (the "Collection") operates an internationally recognized art museum and library program for the inspiration and enjoyment of the public and for the advancement of the study of fine arts and kindred subjects.
Fordham university, the jesuit university of new york, is committed to the discovery of wisdom and the transmission of learning, through research and through education of the highest quality. for more information, see schedule o.
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
For reference, the grantee most central to the portfolio’s shape is Rye Country Day School 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.
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 40 years old; the field is 18. You back the established end — and your money leans older still.
The field is 19% startups (under 5 years old) — 0% of your grantees by number, and just 0% of your money.
The orgs you fund almost never close — 0.0% lost their exemption, against 10% of the field you don’t fund.
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.
41 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 2017–2025, not grant rows in a single year — so this will not match the grant count on the cover. 41 of the 54 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.
Where your money sits — by cause, then by grantee
Each org by its size and your share of it — top-left is where you’re load-bearing
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 GREENWICH HOSPITAL ↗
- Who funds THE ACADEMY FOR TEACHERS INC ↗
- Who funds THE IRISH GEORGIAN SOCIETY INC ↗
- Who funds NEW YORK BOTANICAL GARDEN ↗
- Who funds SAIL TO PREVAIL ↗
- Who funds THE AMERICAN IRELAND FUND (DBA THE IRELAND FUNDS AMERICA/THE IRELAND FUNDS) ↗
- Who funds NATURAL AREAS CONSERVANCY INC ↗
- Who funds CANCER RESEARCH FUND OF THE DAMON RUNYON-WALTER WINCHELL FOUNDATION ↗
- Who funds THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK ↗
- Who funds Scenic Hudson Inc ↗
- Who funds GREENWICH EMERGENCY MEDICAL SERVICE INC ↗
- Who funds HYDE HALL INC ↗
- Who funds MEDECINS SANS FRONTIERES USA INC ↗
- Who funds WOMEN IN NEED INC ↗
- Who funds BLAIR ACADEMY ↗
- Who funds THE ROCKEFELLER UNIVERSITY ↗
- Who funds NEW YORK WOMEN'S FOUNDATION INC ↗
- Who funds THE GREENWICH LIBRARY ↗
- Who funds PREP FOR PREP ↗
- Who funds THE JAY HERITAGE CENTER ↗
- Who funds FUND FOR PARK AVENUE NEW YORK INC ↗
- Who funds BLYTHEDALE CHILDREN'S HOSPITAL ↗
- Who funds AT HOME IN GREENWICH INC ↗
- Who funds Housing Plus Solutions Inc ↗
- Who funds EXODUS SCHOOL ↗
- Who funds ABILIS INC ↗
- Who funds FUND FOR THE AGED INC ↗
- Who funds New York Historical Society ↗
- Who funds MARQUAND PARK FOUNDATION ↗
- Who funds CENTRAL PARK CONSERVANCY INC ↗
- Who funds FUND FOR WOMEN'S EQUALITY INC ↗
- Who funds METROPOLITAN MUSEUM OF ART ↗
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.
Open a dossier: Jewish Communal Fund · The Chicago Community Trust · The Goldman Sachs Charitable Gift Fund · Charina Foundation Inc Richard Menschel · The New York Community Trust · The Bessemer Giving Fund · National Philanthropic Trust · The Ayco Charitable Foundation · Vanguard Charitable Endowment Program · Morgan Stanley Global Impact Funding Trust Inc · Jpmorgan Chase Foundation · The Bank of America Charitable 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 Calf Island Foundation 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, a single department, or state — and drag the year to watch it move.
- Abilis Inc — 74% of income from government
- Cahoon Museum of American Art Inc — 0% of income from government
- Greenwich Hospital — 0% of income from government
- Blair Academy — 0% of income from government
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.