Virginia · Nonprofit
ANDERSON ORTHOPAEDIC RESEARCH INSTITUTE
ANDERSON ORTHOPAEDIC RESEARCH INSTITUTE (Virginia) receives grants from 5 organizations whose IRS filings report $388,114 to it, the largest being FIDELITY INVESTMENTS CHARITABLE GIFT FUND ($154,000). 4 of them have funded it in more than one year, and 59% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- Revenue FY2025
- $1.4M
- Funders on record
- 5
- Grants received
- $388k
- Net assets
- $16M
What Anderson Orthopaedic Research Institute does
Mission
To conduct scientific research and educate health care professionals in orthopaedics and rheumatology.
As stated on its FY2025 Form 990.
Program
The funding received by the anderson orthopaedic research (aori) is used to conduct medical research and quality improvement activities related to hip and knee joint replacement. Aori conducts both prospective and retrospective studies with the ultimate goal of sharing the institute's findings with the broader medical community, including patients, through publications and presentations. Prospective studies, where volunteers consent to participate, are managed by aori's clinical research staff. These staff members help formulate study protocols, obtain institutional review board (irb) approval, consent participants, schedule follow-up visits, administer surveys, compile and analyze outcome data, prepare irb reports as necessary, summarize results for study sponsors, and prepare abstracts, presentations, and manuscripts for submission to scientific meetings and peer-review journals. Retrospective studies, which use pre-existing medical data, are conducted using information obtained as part of routine patient care and data derived from aori's electronic database that archives surgical procedures, clinical visits, patient-reported outcome measures, and adverse events. By analyzing…
$738,417 spent$268,737 earned by the program100% of program spending
The program described on its FY2024 Form 990. Program spending in total: $738,417.
The organization over time
Each line starts at 100 in 2017, so what you read is the shape rather than the size: 150 means half as much again as 2017, 50 means half. The number beside each label in the key is where it ended.
Balance sheet
Total assets and total liabilities at each year end, in dollars. The largest one-year move in total assets was 2019 to 2020, from $10M to $12M (+20%).
How it's funded, over time
Each bar is one year's revenue split into where it came from, and every bar is the same height — these are shares, not amounts, so a year that raised twice as much looks the same size. Hover a bar for the split.
Government-grant reliance: 2021 12%. Grants only. Government contracts and fees sit inside program revenue.
Surplus & reserves
Operating surplus or deficit each year, and months of liquidity in hand. 1 of the last 9 reported years ran a deficit.
reserve
Leadership and staff
The officers, directors, trustees and key employees listed on each return. Joined and no longer listed compare each filing with the year before, matching people by surname and first initial; a year after a gap, or a roster under three people, has no comparison.
Chief executive
Robert Hopper Jr
Executive director
As listed on its FY2025 Form 990.
Who funds it, year by year
2020 → 2023: the base broadened from 1 funder to 4 funders, grant income rose $12k → $140k.
2 of 5 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 59% of grant dollars received. That money is really individual donors directing a sponsor; the institutions to cultivate are the non-DAF funders.
From the IRS filings of ANDERSON ORTHOPAEDIC RESEARCH INSTITUTE’s funders (the co-funder graph). Association, not causation. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
How concentrated its funding is
ANDERSON ORTHOPAEDIC RESEARCH INSTITUTE leans on a few funders — its largest provides 40% of grant income and the top three 85%; half comes from just 2 funders.
the vertical line marks half of all grant income — 2 funders to its left
62% of the income these shares are computed over arrives through pass-through sponsors or from payers whose filings do not say what kind of payment it is. Concentration is still measured over all of it, because the money is real; what it does not support is a claim about how many institutions have chosen to fund ANDERSON ORTHOPAEDIC RESEARCH INSTITUTE.
Largest funder’s share by year: 2020 100% · 2022 57% · 2023 36% — diversifying over time.
“Effective funders” = inverse Herfindahl index (1 / Σ shareᵢ²) — the number of equal-sized funders that would give the same concentration. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Where its funders are
59% of ANDERSON ORTHOPAEDIC RESEARCH INSTITUTE's grant income arrives through donor-advised or pass-through sponsors, whose addresses record where the money is held rather than where the donor is. Of the $159k that is directly attributable, 100% of it comes from funders outside Virginia, across 3 states.
In-state vs out-of-state, by year
Funder states come from each funder’s own filing. $229k arriving through sponsors registered in 2 states is excluded from the map and the split above: a sponsor holds money on a donor’s behalf, so its registered address would place those dollars somewhere no donor need ever have been. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.
Organizations like ANDERSON ORTHOPAEDIC RESEARCH INSTITUTE
Organizations whose mission and program text most resemble this one, by semantic similarity over every organization in the US filings — the closest peers, and often the clearest route to shared or prospective funders.
In Virginia
Nationally
Read directly from this organization’s own Form 990, as neutral context.
Where the money goes
87% of spending goes to programs.
Governance
Footprint & structure
Files a return copy in 1 state
Part of a family of 1 related entity
- Anderson Clinic Post-Graduate Medical Education Foundation · exempt
Screen this organization
A dated, signed PDF of the compliance screen for ANDERSON ORTHOPAEDIC RESEARCH INSTITUTE: IRS status (Business Master File, Publication 78, auto-revocation), the OFAC sanctions lists, the Internal Revenue Bulletin, and California registration, with the Rev. Proc. 2018-32 §8.01 reliance elements stated element by element. Generated from the current files at the moment you download it.
Screens are triage, not determinations; a source that cannot be read reports not screened, never clear. Screen this nonprofit · How the screen works · on the API as GET /api/screening/{ein}?format=pdf
Questions and answers
- Who funds ANDERSON ORTHOPAEDIC RESEARCH INSTITUTE?
- ANDERSON ORTHOPAEDIC RESEARCH INSTITUTE (Virginia) receives grants from 5 organizations whose IRS filings report $388,114 to it, the largest being FIDELITY INVESTMENTS CHARITABLE GIFT FUND ($154,000). 4 of them have funded it in more than one year, and 59% of the money arrives through donor-advised or pass-through sponsors rather than from an institution directly.
- How many funders does ANDERSON ORTHOPAEDIC RESEARCH INSTITUTE have?
- IRS filings report 5 organizations giving $388,114 in grants to ANDERSON ORTHOPAEDIC RESEARCH INSTITUTE, 4 of which have funded it in more than one year.
- Who is the largest funder of ANDERSON ORTHOPAEDIC RESEARCH INSTITUTE?
- FIDELITY INVESTMENTS CHARITABLE GIFT FUND is the largest funder on record, with $154,000 in grants. The full list of funders is on this page.
- How can an organization like ANDERSON ORTHOPAEDIC RESEARCH INSTITUTE find more funders?
- Start with the funders already giving here, then look at the foundations that back similar organizations in Virginia. The funding by cause and by state pages list the largest funders for a given area and how to approach them.
Play a game about who funds Anderson Orthopaedic Research Institute →
These figures are 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 5 funders 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. Trends on this page end at FY2023, the last fiscal year that has finished arriving; later years are shown and marked, and move no figure. Data on this page was exported October 14, 2026. What this page cannot tell you · view filing