· Private foundation
The Della Pietra 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 FY2019–2025.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2025
- Under $10k1 grant · $5k
- $10k–50k3 grants · $65k
- $50k–250k2 grants · $110k
- $250k+7 grants · $5.7M
| Recipient | Amount |
|---|---|
| COLD SPRING HARBOR LABORATORY | $1,155,000 |
| SIMONS LAUFER MATHEMATICAL SCIENCES INSTITUTE | $1,100,000 |
| STONY BROOK FOUNDATION | $1,089,658 |
| SURGEONS DATA SCIENCE COLLECTIVE INC | $1,000,000 |
| FRIENDS OF IHES INC NY | $510,000 |
| PRESIDENT AND FELLOWS OF HARVARD COLLEGE | $510,000 |
| PIVOT WORKS | $300,000 |
| WORLD SCIENCE FOUNDATION | $60,000 |
| COMMUNITY FOUNDATION OF COLLIER COUNTY | $50,000 |
| PLANNED PARENTHOOD HUDSON PECONIC ACTION FUND INC | $25,000 |
| HARBOR COUNTRY DAY SCHOOL | $20,000 |
| GILBERT AND SULLIVAN LIGHT OPERA COMPANY OF LONG ISLAND INC | $20,000 |
| HIGH DESERT KEEPERS ORGANIZATION | $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.
Dollar for dollar, your grants (FY19–25) land where the poverty rate runs at 10%, against an area that typically sits at 9%. 50% of your dollars go to grantees based in above-average-need neighborhoods. Your grants spread fairly evenly across need levels.
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 +27% for the ones you funded once.
12 repeat relationships — 10 still active in FY2025, 2 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, 100% of grant dollars renewed an existing relationship; $5k 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
The Trustees of Princeton University6× · 2019–2024 · $13M · revenue +5%- SLSIMONS LAUFER MATHEMATICAL SCIENCES INSTITUTE7× · 2019–2025 · $6.3M · revenue +90%
- SBSTONY BROOK FOUNDATION INC7× · 2019–2025 · $4.9M · revenue +206%
Funded once
- LLLimroy Lane Community Charitable Foundation Incone grant, 2020 · $100k · revenue -100%
- TSTAMIL SANGAM NEW YORK INCone grant, 2021 · $50k · revenue -53% · 38% of their budget
- RMRonald McDonald House Globalgraduatedone grant, 2023 · $50k · revenue +27%
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 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.
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
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…
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 an independent forum for those who dare to read, think, speak, and write to advance the professional, literary, and scientific understanding of sea power and other issues critical to global security.
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.
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.
The mission of the institute is to translate basic genetic and molecular mechanisms of schizophrenia and related developmental brain disorders into clinical advances that change the lives of affected individuals. it is catalyzing a new…
Northeast college of health sciences (the college) is committed to academic excellence, leadership, and professional best practices in the health sciences.
For reference, the grantee most central to the portfolio’s shape is World Science Foundation and the most unlike its peers is Limroy Lane Community Charitable 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.
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 22 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 The Trustees of Princeton University ↗
- Who funds SIMONS LAUFER MATHEMATICAL SCIENCES INSTITUTE ↗
- Who funds STONY BROOK FOUNDATION INC ↗
- Who funds COLD SPRING HARBOR LABORATORY ↗
- Who funds President and Fellows of Harvard College ↗
- Who funds SURGEON'S DATA SCIENCE COLLECTIVE INC ↗
- Who funds PIVOT WORKS INC ↗
- Who funds CHILDREN AND SCREENS-INSTITUTE OF DIGITAL MEDIA AND CHILD DEVELOPMENT INC ↗
- Who funds HARBOR COUNTRY DAY SCHOOL ↗
- Who funds WORLD SCIENCE FOUNDATION ↗
- Who funds COLLIER COMMUNITY FOUNDATION INC ↗
- Who funds Limroy Lane Community Charitable Foundation Inc ↗
- Who funds PLANNED PARENTHOOD HUDSON PECONIC ACTION FUND INC ↗
- Who funds TAMIL SANGAM NEW YORK INC ↗
- Who funds Ronald McDonald House Global ↗
- Who funds INSTITUTE FOR ADVANCED STUDY - LOUIS BAMBERGER & MRS FELIX FULD FOUNDATION ↗
- Who funds AMERICAN NEAR EAST REFUGEE AID ↗
- Who funds FRIENDS OF SCIENCE EAST 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: The Allen & Eve Foundation Inc · National Philanthropic Trust · Vanguard Charitable Endowment Program · 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 The Della Pietra 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.
- The Trustees of Princeton University — 11% of income from government
- Institute for Advanced Study - Louis Bamberger & Mrs Felix Fuld Foundation — 7% of income from government
- President and Fellows of Harvard College — 7% 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.