· Private foundation
Marc and Janet Pfeffer 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.
By grant size · FY2025
- Under $10k10 grants · $14k
- $10k–50k1 grant · $15k
| Recipient | Amount |
|---|---|
| MOUNT SINAI HEALTH SYSTEM | $15,000 |
| Individual grant recipient | $4,640 |
| AJC GLOBAL JEWISH ADVOCACY | $2,500 |
| UJA FEDERATION NEW YORK | $1,500 |
| FIDF- FRIENDS OF ISRAEL DEFENSE | $1,500 |
| PARK AVENUE SYNAGOGUE | $1,000 |
| MEMORIAL SLOAN KETTERING | $500 |
| Individual grant recipient | $500 |
| GIVE WELL | $500 |
| CROHN'S COLITIS FOUNDATION | $500 |
| THE HESCHEL SCHOOL | $500 |
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 (FY19–25, $113k) land where the poverty rate runs at 17%, against an area that typically sits at 10%. 100% 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.
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 +34% since the first grant, against +9% for the ones you funded once.
16 repeat relationships — 9 still active in FY2025, 7 since wound down; 2 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, 93% of grant dollars renewed an existing relationship; $2k 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
- MSMOUNT SINAI HEALTH SYSTEM INC7× · 2019–2025 · $113k · revenue +34%
Cornell University3× · 2017–2020 · $18k · revenue +59%- RCRIVERDALE COUNTRY SCHOOL INC3× · 2017–2020 · $17k · revenue +37%
Funded once
- ISICAHN SCHOOL OF MEDICINE AT MT SINAone grant, 2018 · $15k
- MSMOUNT SINAIone grant, 2017 · $10k
- AMActive Minds Incone grant, 2022 · $500 · revenue -10%
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.
Promotes excellence in jewish learning & leadership within a pluralistic environment. see sch ohebrew college promotes excellence in jewish learning and leadership within a pluralistic environment of open inquiry, intellectual rigor,…
Biu produces students who excel in the sciences, humanities, law, engineering, business & the arts.
To create an informed, celebratory and satisfying jewish community for students at the university of southern california, to deepen jewish identity through social, intellectual and spiritual participation, to offer diversified…
The israel institute, inc. (the institute) enhances knowledge about modern israel by ensuring that more students have access to courses about israel during their time on campus.
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
Enhance the lives of jewish students as that they may enrich the jewish people and the world. hillel actively seeks to engage jewish students on their own terms, to provide them with opportunities to participate in jewish life.
The mission of gw hillel is to provide an open, warm, and pluralistic environment in which students can shape their college experience by connecting socially, culturally, and spiritually to their judaism. hillel aims to foster students'…
Committed to exceptional healthcare quality for all and actively engaged with our community, einstein drives scientific discovery and educates compassionate leaders in health and science.
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…
Brown risd hillel encourages and supports a diversity of students as they explore, develop and deepen their jewish identities. we are committed to having judaism serve as a source of meaning and growth during their time on college hill and…
Undergraduate, graduate, and professional education and research across a broad array of academic domains.
For reference, the grantee most central to the portfolio’s shape is Birthright Israel Foundation and the most unlike its peers is Metropolis Cc Foundation. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
18 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. 18 of the 32 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 MOUNT SINAI HEALTH SYSTEM INC ↗
- Who funds Cornell University ↗
- Who funds RIVERDALE COUNTRY SCHOOL INC ↗
- Who funds UNITED JEWISH APPEAL-FEDERATION OF JEWISH PHILANTHROPIES OF NEW YORK INC ↗
- Who funds SCHOOL YEAR ABROAD INC ↗
- Who funds SARAH LAWRENCE COLLEGE ↗
- Who funds Rutgers Hillel Corporation ↗
- Who funds THE CLEAR FUND ↗
- Who funds THE MIRYAM INSTITUTE INC ↗
- Who funds Active Minds Inc ↗
- Who funds AMERICAN JEWISH COMMITTEE ↗
- Who funds THE JED FOUNDATION ↗
- Who funds CORNELL HILLEL ↗
- Who funds BIRTHRIGHT ISRAEL FOUNDATION ↗
- Who funds HILLEL THE FOUNDATION FOR JEWISH CAMPUS LIFE ↗
- Who funds The President and Trustees of Colby College ↗
- Who funds METROPOLIS CC FOUNDATION ↗
- Who funds FRACTURED ATLAS 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: Combined Jewish Philanthropies of Greater Boston Inc · Vanguard Charitable Endowment Program · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund
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 Marc and Janet Pfeffer 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 or a single department — and drag the year to watch it move.
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.