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Florida · Nonprofit
MARK AND GRETA WALKER FOUNDATION (Florida) is funded by 2 grantmakers whose IRS filings report $533,000 in grants to it, the largest being WALKER FAMILY CHARITABLE TRUST ($408,000). 2 of them have funded it in more than one year.
Against its field
MARK AND GRETA WALKER FOUNDATION has grown faster than half of the 1,908 philanthropy nonprofits its size.
this organization peer median middle 50% of peers· 1,908 philanthropy nonprofits under $100k, FY2025
Revenue, expenses and net assets — each indexed to 100 at its first filing year, so you read the trajectory, not the magnitude. The shaded band is where the middle 50% of its peers' revenue would sit, given their growth.
Grant income rose $55k → $69k on a roughly flat funder count — a concentrated base.
From the IRS filings of MARK AND GRETA WALKER FOUNDATION’s funders (the co-funder graph). Association, not causation.
MARK AND GRETA WALKER FOUNDATION leans on a few funders — its largest provides 77% of grant income and the top three 100%; half comes from just 1 funder.
the vertical line marks half of all grant income — 1 funder to its left
Largest funder’s share by year: 2017 91% · 2018 94% · 2019 91% · 2020 91% · 2021 93% · 2022 72% · 2023 61% · 2024 61% · 2025 51% — diversifying over time.
“Effective funders” = inverse Herfindahl index (1 / Σ shareᵢ²) — the number of equal-sized funders that would give the same concentration.
MARK AND GRETA WALKER FOUNDATION is locally rooted: 100% of its grant income comes from Florida funders.
In-state vs out-of-state, by year
Grantmakers that don’t fund you yet, surfaced two ways: they back organizations that share your funders, or their grantees resemble your mission. The ones both signals agree on come first.
From the co-funder graph (funders backing at least two comparable organizations, shrunk for grantee count, donor-advised and mega-funds excluded) and the universe embeddings. A research starting point; overlap is association, not a guarantee of fit.
Nonprofits whose mission and program text most resemble this one, by semantic similarity over the universe of US filings — the closest peers, and often the clearest route to shared or prospective funders.
Read directly from this organization’s own Form 990, as neutral context.
Every figure is read directly from IRS Form 990 / 990-PF e-file XML — this organization’s own return for FY2025 (financials across 2017–2025), and the filings of 2funders that report grants to it. “On record” means captured in the filings we have parsed — a funder that does not e-file, or whose grant detail is not itemized, will not appear. Filings run roughly 12–24 months behind. view filing