· Public charity
Marcum Foundation Inc
The marcum foundation strives to be a leading contributor of time & money, as a fully engaged partner, to organizations offering fundamental human services to children in our local communities.we envision a world where no child has to worry about their basic needseducation, food, healthcare and general wellbeing.
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
- $10k–50k1 grant · $10k
- $250k+3 grants · $1.6M
| Recipient | Amount |
|---|---|
| ST JUDE'S CHILDRENS RESEARCH HOSPITAL | $809,389 |
| AMERICAN HEART ASSOCIATION | $418,000 |
| CHILDREN OF FALLEN PATRIOTS FOUNDATION | $361,950 |
| BOYS & GIRLS CLUB OF AMERICA | $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 (FY17–24, $30k) land where the poverty rate runs at 15%, against an area that typically sits at 9%. 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.
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 +71% since the first grant, against +22% for the ones you funded once.
6 repeat relationships — 3 still active in FY2025, 3 since wound down; 1 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, 99% of grant dollars renewed an existing relationship; $10k 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
ST JUDE CHILDREN'S RESEARCH HOSPITAL INC5× · 2020–2025 · $2.3M · revenue +78%- AHAmerican Heart Association Inc2× · 2024–2025 · $1.0M · revenue +10%
- COChildren of Fallen Patriots Foundation3× · 2023–2025 · $708k · revenue +71%
Funded once
- CHCHILDREN'S HOSPITAL OF ORANGE COUNTYone grant, 2024 · $50k · revenue +18%
WOUNDED WARRIOR PROJECT INCgraduatedone grant, 2017 · $15k · revenue +70%- TMTHE MORGAN STATE UNIVERSITY FOUNDATION INCone grant, 2022 · $11k · revenue +22%
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.
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…
Provider of pediatric healthcare, education, research & community service
To educate students to be ethical and socially responsible leaders in a global community.
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.
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
The children's hospital of philadelphia, the oldest hospital in the united states dedicated exclusively to pediatrics, strives to be the world leader in the advancement of health care for children by integrating excellent patient care,…
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
Primary functions are the coordination and delivery of health care resources and services, health care education for the hospital service area, long range analysis of health care needs and development of programs, and arranging for…
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 Union League Boys and Girls Clubs and the most unlike its peers is Leadership Education and Athletics in Partnership 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 41 years old; the field is 18. You back the established end — and your money leans older still.
The field is 21% 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 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.
25 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. 25 of the 26 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 ST JUDE CHILDREN'S RESEARCH HOSPITAL INC ↗
- Who funds American Heart Association Inc ↗
- Who funds Children of Fallen Patriots Foundation ↗
- Who funds UNITED STATES FUND FOR UNICEF ↗
- Who funds SHARE OUR STRENGTH ↗
- Who funds CHILDREN'S HOSPITAL OF ORANGE COUNTY ↗
- Who funds LEADERSHIP EDUCATION AND ATHLETICS IN PARTNERSHIP INC ↗
- Who funds WOUNDED WARRIOR PROJECT INC ↗
- Who funds THE MORGAN STATE UNIVERSITY FOUNDATION INC ↗
- Who funds Auxiliary to Bellevue Hospital Center Inc ↗
- Who funds UMPS CARE CHARITIES INC ↗
- Who funds METROPOLITAN NEW YORK COORDINATING COUNCIL ON JEWISH POVERTY ↗
- Who funds BOYS & GIRLS CLUBS OF AMERICA ↗
- Who funds TRUSTEES OF THORNTON ACADEMY ↗
- Who funds HOFSTRA UNIVERSITY ↗
- Who funds BOYS & GIRLS CLUBS OF MAUI INC ↗
- Who funds BLOOD CANCER UNITED INC ↗
- Who funds UNION LEAGUE BOYS AND GIRLS CLUBS ↗
- Who funds LINKS TO COLLEGE FOUNDATION INC ↗
- Who funds FAMILY REACH FOUNDATION ↗
- Who funds ORANGEWOOD FOUNDATION ↗
- Who funds LINCOLN UNIVERSITY FOUNDATION OF PA ↗
- Who funds CITYMEALS-ON-WHEELS ↗
- Who funds HORIZONS FOR HOMELESS CHILDREN ↗
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: Morgan Stanley Global Impact Funding Trust Inc · National Philanthropic Trust · American Online Giving Foundation Inc · Fidelity Investments Charitable Gift Fund · Donor Advised Charitable Giving Inc · Amazonsmile 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 Marcum Foundation 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.
- Horizons for Homeless Children — 21% of income from government
- Leadership Education and Athletics in Partnership Inc — 17% of income from government
- The Morgan State University Foundation Inc — 7% of income from government
- Wounded Warrior Project Inc — 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 Marcum Foundation Inc?
Find your warmest path to Marcum Foundation 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.