· Private foundation
Additional Ventures Foundation
Its FY2024 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 FY2017–2024.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2024
- Under $10k2 grants · $8k
- $10k–50k2 grants · $30k
- $50k–250k52 grants · $11M
- $250k+12 grants · $6.4M
| Recipient | Amount |
|---|---|
| THE J DAVID GLADSTONE INSTITUTES | $1,200,000 |
| RENATA MEDICAL INC | $1,100,000 |
| BOSTON CHILDREN'S HOSPITAL | $934,317 |
| NATIONWIDE CHILDREN'S HOSPITAL INC | $594,872 |
| CARNEGIE MELLON UNIVERSITY | $493,452 |
| WASHINGTON UNIVERSITY IN ST LOUIS | $381,383 |
| THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY | $322,050 |
| EMORY UNIVERSITY | $302,993 |
| IRCCS AZIENDA OSPEDALIERO UNIVERSITARIA DI BOLOGNA | $295,918 |
| THE RECTOR & VISITORS OF THE UNIVERSITY OF VIRGINIA | $282,614 |
| IMPERIAL COLLEGE OF SCIENCE TECHNOLOGY AND MEDICINE | $264,436 |
| ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI | $261,404 |
| SANFORD BURNHAM PREBYS MEDICAL DISCOVERY INSTITUTE | $247,933 |
| THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY | $241,941 |
| THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY | $233,359 |
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 (FY17–24) land where the poverty rate runs at 13%, against an area that typically sits at 11%. 65% of your 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.
Where the work is directed
The same grants, placed two ways — where each recipient sits, and where its stated purpose earmarks the money.
About 12% of Additional Ventures Foundation’s grant dollars are earmarked, by their stated purpose, for a different county than the recipient’s own address — money that lands at a nonprofit in one place but is meant to do its work in another.
Recipient view: each grant at its grantee’s ZIP, mapped to a county. Directed view: each grant at the county its stated purpose names, falling back to the recipient’s county when the purpose names no place; US grants only. A county shows only if it carries the top 95% of that view’s dollars. Purposes are read from the foundation’s own 990 grant descriptions.
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.
44 repeat relationships — 37 still active in FY2024, 7 since wound down; 10 grantees were first funded in FY2024 (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 FY2024, 91% of grant dollars renewed an existing relationship; $1.4M 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
- CHChildren's Hospital Corporation5× · 2020–2024 · $5.7M · revenue +55%
- TJTHE J DAVID GLADSTONE INSTITUTES5× · 2019–2024 · $5.3M · revenue +90%
- CHChildren's Hospital Los Angeles4× · 2021–2024 · $1.8M · revenue +34%
Funded once
- TCTHE CHILDREN'S HOSPITAL OF PHILADELPHIA FOUNDATIONgraduatedone grant, 2019 · $1.0M · revenue +148%
- NCNATIONWIDE CHILDREN'S HOSPITAL FOUNDATIONone grant, 2019 · $1.0M
- SBSTAR BP INCone grant, 2023 · $500k
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.
See Form 990, Part I, Line 1, Description of Organization Mission.
The mission of Rush is to improve the health of the individuals and diverse communities we serve through the integration of outstanding patient care, education, research and community partnerships.
Case Western Reserve University is an independent, research-oriented university with broadly based strengths in health, including medicine, nursing and dentistry; in engineering; in the arts and sciences; and in law, management and social…
As a leading research university with a distinctive commitment to undergraduate education, Rice University aspires to path breaking research, unsurpassed teaching, and contributions to the betterment of our world. It seeks to fulfill this…
University of minnesota physicians serves as the integrated group practice for the university of minnesota medical school full-time faculty to provide the highest quality healthcare to patients and their families.university of minnesota…
Drexel university fulfills its founder's vision of preparing each new generation of students for productive professional and civic lives while also focusing its collective expertise on solving society's greatest problems. drexel is an…
We educate the next generation of leaders to improve the health of our society.
Research, education and general - princeton university is a private not-for-profit, non-sectarian institution of higher learning with approximately 5,700 undergraduate and 3,300 graduate students. 2,500 students graduated in the 2024-2025…
Fred hutch cancer center ("fred hutch") unites innovative research and compassionate care to prevent and eliminate cancer and infectious disease. continued on schedule o
The mission of southern california university of health sciences (scu) is to educate students as competent, caring and successful practitioners of integrative healthcare. the university is committed to providing excellence in academics,…
Education and Research
Dartmouth College educates the most promising students and prepares them for a lifetime of learning and of responsible leadership, through a faculty dedicated to teaching and the creation of knowledge.
For reference, the grantee most central to the portfolio’s shape is Carnegie Mellon University and the most unlike its peers is Sanford Burnham Prebys Medical Discovery Institute. 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 57 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) — 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.
38 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. 38 of the 75 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 Children's Hospital Corporation ↗
- Who funds THE J DAVID GLADSTONE INSTITUTES ↗
- Who funds THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY ↗
- Who funds LUCILE PACKARD FOUNDATION FOR CHILDREN'S HEALTH ↗
- Who funds Children's Hospital Los Angeles ↗
- Who funds ENDURING HEARTS INC ↗
- Who funds Carnegie Mellon University ↗
- Who funds ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI ↗
- Who funds WASHINGTON UNIVERSITY ↗
- Who funds THE CHILDREN'S HOSPITAL OF PHILADELPHIA ↗
- Who funds THE CHILDREN'S HOSPITAL OF PHILADELPHIA FOUNDATION ↗
- Who funds President and Fellows of Harvard College ↗
- Who funds Baylor College of Medicine ↗
- Who funds Cornell University ↗
- Who funds CHILDREN'S HOSPITAL MEDICAL CENTER ↗
- Who funds Emory University ↗
- Who funds New York University ↗
- Who funds Massachusetts Institute of Technology ↗
- Who funds DUKE UNIVERSITY ↗
- Who funds LIFE SCIENCES RESEARCH FOUNDATION ↗
- Who funds Ann & Robert H Lurie Children's Hospital of Chicago ↗
- Who funds Northwestern University ↗
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 Simons Foundation Inc · Gordon E and Betty I Moore Foundation · Silicon Valley Community Foundation · National Philanthropic Trust · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund · 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 Additional Ventures 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.
- Massachusetts Institute of Technology — 35% of income from government
- Johns Hopkins University — 12% of income from government
- Children's Hospital Corporation — 10% of income from government
- University of Central Florida Research Foundation Inc — 10% 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.
Warm introductions · Powered by PlinthPlus
How do I get to Additional Ventures Foundation?
Find your warmest path to Additional Ventures Foundation 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.