B
Evidence Grade B
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Recent
95%
95% -- share of endowment growth from investment returns for median nonprofit endowment (2025)
For the median nonprofit endowment, nearly 95% of growth comes from investment returns rather than new contributions.
- nearly 95%
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Lighthouse Research Team
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Evidence graded
Value
95%
Unit
Percentage
Data Vintage
2025
Entity
Evidence Quality
B
Strong, reliable evidence
Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.
Single source - not yet corroborated
Score breakdown
Extraction
75
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
NBER Digest
Primary
Tier B
https://www.ccsfundraising.com/insights/all-endowment-fundraising-campaign/ ↗
Source Article
How to Know If an All-Endowment Fundraising Campaign Is Right for Your Organization - CCS Fundraising
Committing to an all-endowment campaign can be one of the most consequential fundraising decisions an organization makes. Endowments promise long-term stability and can act as a financial anchor through economic shifts, funding uncertainties, and changing public support patterns. Research shows that…
Original Research
NBER Digest
· Original study ↗
Methodology
Cited from NBER Digest on investment returns of nonprofit endowments
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
median nonprofit endowment: 95% share of endowment growth from investment returns. Source: NBER Digest (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/endowment-growth-from-investment-returns-2025
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<blockquote cite="https://lighthousedata.io/data/endowment-growth-from-investment-returns-2025" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>95%</strong> -- share of endowment growth from investment returns for median nonprofit endowment<br><small>Source: NBER Digest (2025) · <a href="https://lighthousedata.io/data/endowment-growth-from-investment-returns-2025" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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