· 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 it funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2025.
Where the money goes
Grants by size, and the largest recipients.
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 |
Does the money reach high-need areas?
Each grant placed by the hardship in its grantee’s ZIP, against the area’s typical level.
Its 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 its grants land in higher-need ZIPs.
How this is measured
How this is measured
Who it funds again
Organizations funded in more than one year, against those funded once.
Grantees it renews have grown median revenue +34% since the first grant, against +9% for those 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
How this is measured
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%
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.
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.
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.
How this is measured
18 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. 18 of the 32 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.
Where the money sits, by cause and then by grantee
Each grantee by its size and the funder’s share of it; top left is load-bearing
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 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 ↗
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 tightly interlocked group: 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
How this is measured
How much its grantees rely on government
Each dot is one organization Marc and Janet Pfeffer Foundation funds: left to right is the share of its income from government, bottom to top the share from Marc and Janet Pfeffer Foundation. Bigger dots raise more.
How this is measured
Play a game based on Marc and Janet Pfeffer’s filings →