· Private foundation
The Brook Fund 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.
What you funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2020–2025.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2025
- Under $10k77 grants · $117k
- $10k–50k10 grants · $188k
| Recipient | Amount |
|---|---|
| CORNELL UNIVERSITY | $47,000 |
| SAVANNAH JEWISH FEDERATION | $30,000 |
| JCCNNJ | $25,000 |
| ADAMAH | $20,000 |
| BROWN UNIVERSITY | $13,000 |
| SAVANNAH JEWISH EDUCATIONAL ALLIANCE | $11,800 |
| THE SYLVIA CENTER | $10,500 |
| BREAKTHROUGH T1D (JDRF) | $10,500 |
| SAVANNAH CLASSICAL ACADEMY | $10,000 |
| NY STEM CELL FOUNDATION | $10,000 |
| JERICHO PROJECT | $9,300 |
| HORACE MANN SCHOOL | $8,900 |
| CENTER FOR EARLY EDUCATION | $8,750 |
| JEWISH FEDERATION OF NORTHERN NJ | $6,000 |
| IMMUNE DEFICIENCY FOUNDATION | $5,000 |
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 (FY20–24, $11k) land where the poverty rate runs at 7%, against an area that typically sits at 10%. 0% of those dollars go to grantees based in above-average-need neighborhoods. Your grants skew toward lower-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.
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 +35% since the first grant, against +31% for the ones you funded once.
99 repeat relationships — 66 still active in FY2025, 33 since wound down; 17 grantees were first funded in FY2025 (too recent to call).
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, 80% of grant dollars renewed an existing relationship; $57k 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
Cornell University6× · 2020–2025 · $173k · revenue +46%- TVTHE VALLEY HOSPITAL FOUNDATION INC5× · 2020–2024 · $128k · revenue +64%
FOUNDATION FOR JEWISH CAMP INC5× · 2020–2024 · $53k · revenue +95%
Funded once
- SKSTEVEN K AND WINIFRED A GRINSPOON HILLEL CENTER FOR JEWISH COMMUNITYone grant, 2024 · $20k · revenue -72%
- SJSAVANNAH JEWISH EDUCATIONAL ALLIANCone grant, 2024 · $12k
- CCCROHN'S COLITIS FOUNDATIONone grant, 2024 · $10k
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.
Nyu is a private university with approximately 60,000 matriculating students in 20 schools and institutes. nyu's primary missions are education, research and scholarship, and patient care.
Operate a state-of-the-art, world-class genomic research center that creates and uses advanced genomics to understand the genetic basis of disease. for more information, see schedule o.
The institute for advanced study (the institute) is one of the world's leading centers for theoretical research and intellectual inquiry. see schedule o.
Chartered by a unanimous act of congress, the museum is america's national institution for the documentation, study, interpretation, and education of holocaust history and serves as our country's memorial to the victims of the holocaust.…
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.
The graduate center foundation is committed to promoting and safe-guarding the success of the graduate center by raising funds and managing and investing donations for use by the graduate center. the board of trustees of the foundation…
We educate the next generation of leaders to improve the health of our society.
Sanford burnham prebys medical discovery institute's mission is to advance the biomedical sciences by cultivating the next generation of scientific leaders, providing meaningful opportunities for researchers of all backgrounds to learn,…
To be a leader in the provision of world class patient care, teaching, research, and service to local, state, national, and international communities. newyork-presbyterian hospital is one of the nation's most comprehensive, integrated…
Nysci's mission is to nurture generations of passionate learners, critical thinkers, and active citizens through design make play - an approach to learning and engagement that is deeply rooted in research on stem learning and guides the…
Biu produces students who excel in the sciences, humanities, law, engineering, business & the arts.
The museum of the city of new york fosters understanding of the distinctive nature of urban life in the world's most influential metropolis. it engages visitors by celebrating, documenting, and interpreting the city's past, present, and…
For reference, the grantee most central to the portfolio’s shape is Jewish Federation of Northern New Jersey Inc and the most unlike its peers is Daughters of Miriam Foundation Inc. 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 46 years old; the field is 16. You back the established end — and your money leans older still.
The field is 22% startups (under 5 years old) — 4% of your grantees by number, and just 6% of your money.
The orgs you fund almost never close — 0.0% lost their exemption, against 13% 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.
81 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. 81 of the 149 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 JEWISH FEDERATION OF NORTHERN NEW JERSEY INC ↗
- Who funds Cornell University ↗
- Who funds THE VALLEY HOSPITAL FOUNDATION INC ↗
- Who funds FOUNDATION FOR JEWISH CAMP INC ↗
- Who funds KIPP NEW YORK INC ↗
- Who funds HIAS INC ↗
- Who funds JEWISH NATIONAL FUND (KEREN KAYEMETH LEISRAEL) INC ↗
- Who funds JERICHO PROJECT ↗
- Who funds Horace Mann School ↗
- Who funds ADAMAH INC ↗
- Who funds IMMUNE DEFICIENCY FOUNDATION ↗
- Who funds THE SAVANNAH CLASSICAL ACADEMY INC ↗
- Who funds STEVEN K AND WINIFRED A GRINSPOON HILLEL CENTER FOR JEWISH COMMUNITY ↗
- Who funds UNITED WAY OF BERGEN COUNTY ↗
- Who funds CITY HARVEST INC ↗
- Who funds BROWN UNIVERSITY ↗
- Who funds THE CENTER FOR EARLY EDUCATION ↗
- Who funds DAUGHTERS OF MIRIAM FOUNDATION INC ↗
- Who funds THE SYLVIA CENTER ↗
- Who funds THE ROCKEFELLER UNIVERSITY ↗
- Who funds HILLEL THE FOUNDATION FOR JEWISH CAMPUS LIFE ↗
- Who funds TABLE TO TABLE INC ↗
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: David and Eleanore Rukin Philanthropic Foundation · Jewish Communal Fund · The Goldman Sachs Charitable Gift Fund · Jewish Federation of Northern New Jersey Inc · Columbia Bank Foundation · Charities Aid Foundation America · The Russell Berrie Foundation · The Savannah Community Foundation Inc · Gs Donor Advised Philanthropy Fund for Wealth Management Inc · The Warburg Pincus Foundation · Jewish Community Foundation of Greater Metrowest NJ · The Ayco Charitable Foundation
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 Brook Fund Inc 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.
- Hias Inc — 88% of income from government
- Adamah Inc — 10% of income from government
- West Bergen Mental Healthcare Inc — 5% of income from government
- Ramapo College Foundation — 1% of income from government
- Center for Food Action in New Jersey — 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.
Warm introductions · Powered by PlinthPlus
How do I get to The Brook Fund Inc?
Find your warmest path to The Brook Fund Inc through trustees and officers whose names appear on both boards. Search for your organization and Plinth traces the shortest route it can evidence.
Each link is a name appearing on two organizations’ public IRS 990 filings, matched on that name and, where the filings support it, on location. A same-state match has geographic support, which is a second matching feature rather than confirmation that the two are one person; a cross-state one is the likeliest to be two people who share a name. Every hop shows its tier, low-confidence and distant paths are held back rather than guessed, and it is worth confirming the person before you use the introduction.