Liabilities / Assets
13th percentile
Higher debt load relative to assets than 13% of similar nonprofits.
EIN 81-0737472 • 501(c)3 • Palo Alto, CA
Profile
The mission of open philanthropy is to study and to engage in research analyzing the most promising options for ensuring that philanthropy has a lasting impact on improving the lives of as many people as possible.
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
13th percentile
Higher debt load relative to assets than 13% of similar nonprofits.
Liabilities / Revenue
23rd percentile
Higher debt load relative to revenue than 23% of similar nonprofits.
Net Margin
1st percentile
Higher net margin than 1% of similar nonprofits.
Top Officer Pay
Score unavailable
No filing with officer rows is available for this organization yet.
Asset Growth
5th percentile
Faster asset growth than 5% of similar nonprofits.
Revenue Growth
6th percentile
Faster revenue growth than 6% of similar nonprofits.
Assets
Down$21,641,481
Down $4,987,034 (-19%) from 2023
Liabilities
Down$116,782
Down $146,276 (-56%) from 2023
Net Assets
Down$21,524,699
Down $4,840,758 (-18%) from 2023
Revenue
Down$1,803,010
Down $1,305,436 (-42%) from 2023
Expenses
Up$7,291,034
Up $2,343,816 (+47%) from 2023
Net Income
Down-$5,488,024
Down $3,649,252 (-198%) from 2023
Most recent year
2024 • Form 990Facts available. Structured filing facts are available, but richer extracted sections are limited.
The mission of open philanthropy project is to study and to engage in research analyzing the most promising options for ensuring that philanthropy has a lasting impact on improving the lives of as many people as possible.
To study and engage in research to improve the effectiveness and impact of philanthropic giving
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Investments in Publicly Traded Securities | $21,359,460 | $18,690,470 | ▼ $2,668,990 |
| Savings and Temporary Cash Investments | $4,537,374 | $1,805,577 | ▼ $2,731,797 |
| Cash and Non-Interest-Bearing Accounts | $548,492 | $425,945 | ▼ $122,547 |
| Accounts Receivable | $106,745 | $421,011 | ▲ $314,266 |
| Prepaid Expenses and Deferred Charges | $53,991 | $209,995 | ▲ $156,004 |
| Land, Buildings, and Equipment, Net | $22,453 | $88,483 | ▲ $66,030 |
| Total Assets | $26,628,515 | $21,641,481 | ▼ $4,987,034 |
| Liabilities | |||
| Accounts Payable and Accrued Expenses | $263,058 | $116,782 | ▼ $146,276 |
| Total Liabilities | $263,058 | $116,782 | ▼ $146,276 |
| Net Assets / Fund Balance | |||
| Net Assets Without Donor Restrictions | $26,365,457 | $21,524,699 | ▼ $4,840,758 |
| Total Net Assets Fund Balance | $26,365,457 | $21,524,699 | ▼ $4,840,758 |
| Total Liabilities and Net Assets / Fund Balance | $26,628,515 | $21,641,481 | ▼ $4,987,034 |
| Asset | Book Value | Depreciation | Basis |
|---|---|---|---|
| Equipment | $88,483 | $27,374 | $115,857 |
| Name | Title | Full / Part Time | Base | Other | Total |
|---|---|---|---|---|---|
| David Roodman | Senior Advisor | FT | $264,139 | $91,795 | $355,934 |
| Heather Youngs | Senior Program Officer | FT | $290,703 | $53,668 | $344,371 |
| James Snowden | Senior Program Officer | FT | $264,080 | $51,859 | $315,939 |
| Thomas Davidson | Senior Research Fellow | FT | $213,831 | $48,136 | $261,967 |
| Jospeh Carlsmith | Senior Advisor | FT | $202,172 | $40,031 | $242,203 |
| Name | Title |
|---|---|
| Cari Tuna | President/director |
| Alexander Berger | CEO/director |
| Dustin Moskovitz | Director |
| Holden Karnofsky | Director |
| Divesh Makan | Secretary/director |
| Tom Van Loben Sels | Treasurer |
| Contractor | Services | Location | Compensation |
|---|---|---|---|
| Philanthropic Services Corp | Research Administration | 314 LYTTON AVE, Palo Alto, CA 94301 | $467,000 |
| Line Item | Amount |
|---|---|
| Salaries, Compensation, and Employee Benefits | $6,474,342 |
| Other Expenses | $816,692 |
| Grants and Similar Amounts Paid | $0 |
| Professional Fundraising Fees | $0 |
| Total Fundraising Expense | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Other Salaries and Wages | $4,841,947 | - | - | $4,841,947 |
| Pension Plan Contributions | $678,872 | - | - | $678,872 |
| Other Employee Benefits | $648,328 | - | - | $648,328 |
| Payroll Taxes | $305,195 | - | - | $305,195 |
| Travel | $276,488 | - | - | $276,488 |
| Fees for Services Other | $121,022 | $105,560 | - | $226,582 |
| Office Expenses | $57,440 | $16,318 | - | $73,758 |
| Information Technology | $33,825 | $27,390 | - | $61,215 |
| Other Expenses | - | $36,589 | - | $36,589 |
| Occupancy | $29,508 | $953 | - | $30,461 |
| Fees for Services Accounting | - | $27,300 | - | $27,300 |
| Conferences and Meetings | $25,531 | $1,250 | - | $26,781 |
| Depreciation Depletion | - | $24,459 | - | $24,459 |
| Fees for Services Legal | - | $18,585 | - | $18,585 |
| Insurance | - | $14,474 | - | $14,474 |
| Total Functional Expenses | $7,018,156 | $272,878 | $0 | $7,291,034 |
| Line Item | Amount |
|---|---|
| Professional Fundraising Fees | $0 |
“Directors dustin moskovitz and cari tuna have a family relationship.”
“Form 990 is reviewed by the audit committee and legal counsel and then distributed to the board of directors prior to filing.”
“The conflict of interest policy covers directors, officers, key employees, committee members, spouses or domestic partners of any of the listed people, and former officers, directors or key employees who served in such capacity within the five previous years. In connection with any actual or possible conflict of interest, a covered person must immediately disclose to the board, committee or board designee the existence and nature of his or her financial interest or any disclosable relationships. All newly appointed or elected board members or officers shall disclose all known conflicts of interest and disclosable relationships upon assumption of their duties, and should a conflict of interest or disclosable relationship develop, must immediately disclose to the board, committee or board designee such actual or possible conflict of interest or disclosable relationship. After a potential conflict has been disclosed, the board or committee shall determine if a conflict of interest exists. If the board or committee determines that a covered person has a financial interest, then it will be investigated and determined by a majority vote of the disinterested board members whether the transaction or arrangement is in the organization's best interests. Covered persons are required to review and certify compliance with the policy on an annual basis.”
“The organization's governing documents, conflict of interest policy and financial statements are made available to the public upon request when required by federal or state law.”
This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.
| Path | # | Value |
|---|---|---|
| IRS990/AccountantCompileOrReviewInd | 0 | 0 |
| IRS990/AccountsPayableAccrExpnssGrp/BOYAmt | 0 | 263058 |
| IRS990/AccountsPayableAccrExpnssGrp/EOYAmt | 0 | 116782 |
| IRS990/AccountsReceivableGrp/BOYAmt | 0 | 106745 |
| IRS990/AccountsReceivableGrp/EOYAmt | 0 | 421011 |
| IRS990/ActivitiesConductedPrtshpInd | 0 | 0 |
| IRS990/ActivityOrMissionDesc | 0 | TO STUDY AND ENGAGE IN RESEARCH TO IMPROVE THE EFFECTIVENESS AND IMPACT OF PHILANTHROPIC GIVING |
| IRS990/AllOtherContributionsAmt | 0 | 1006674 |
| IRS990/AnnualDisclosureCoveredPrsnInd | 0 | 1 |
| IRS990/BackupWthldComplianceInd | 0 | 1 |
| IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt | 0 | APERCEN PARTNERS LLC |
| IRS990/BooksInCareOfDetail/PhoneNum | 0 | 6508047100 |
| IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt | 0 | 314 LYTTON AVE |
| IRS990/BooksInCareOfDetail/USAddress/CityNm | 0 | PALO ALTO |
| IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd | 0 | CA |
| IRS990/BooksInCareOfDetail/USAddress/ZIPCd | 0 | 94301 |
| IRS990/BusinessRlnWith35CtrlEntInd | 0 | 0 |
| IRS990/BusinessRlnWithFamMemInd | 0 | 0 |
| IRS990/BusinessRlnWithOrgMemInd | 0 | 0 |
| IRS990/CashNonInterestBearingGrp/BOYAmt | 0 | 548492 |
| IRS990/CashNonInterestBearingGrp/EOYAmt | 0 | 425945 |
| IRS990/ChangeToOrgDocumentsInd | 0 | 0 |
| IRS990/CntrctRcvdGreaterThan100KCnt | 0 | 1 |
| IRS990/CollectionsOfArtInd | 0 | 0 |
| IRS990/CompensationFromOtherSrcsInd | 0 | 0 |
| IRS990/CompensationProcessCEOInd | 0 | 0 |
| IRS990/CompensationProcessOtherInd | 0 | 0 |
| IRS990/ConferencesMeetingsGrp/ManagementAndGeneralAmt | 0 | 1250 |
| IRS990/ConferencesMeetingsGrp/ProgramServicesAmt | 0 | 25531 |
| IRS990/ConferencesMeetingsGrp/TotalAmt | 0 | 26781 |
| IRS990/ConflictOfInterestPolicyInd | 0 | 1 |
| IRS990/ConservationEasementsInd | 0 | 0 |
| IRS990/ConsolidatedAuditFinclStmtInd | 0 | 0 |
| IRS990/ContractorCompensationGrp/CompensationAmt | 0 | 467000 |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/AddressLine1Txt | 0 | 314 LYTTON AVE |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/CityNm | 0 | PALO ALTO |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/StateAbbreviationCd | 0 | CA |
| IRS990/ContractorCompensationGrp/ContractorAddress/USAddress/ZIPCd | 0 | 94301 |
| IRS990/ContractorCompensationGrp/ContractorName/BusinessName/BusinessNameLine1Txt | 0 | PHILANTHROPIC SERVICES CORP |
| IRS990/ContractorCompensationGrp/ServicesDesc | 0 | RESEARCH ADMINISTRATION |
| IRS990/CreditCounselingInd | 0 | 0 |
| IRS990/CYBenefitsPaidToMembersAmt | 0 | 0 |
| IRS990/CYContributionsGrantsAmt | 0 | 1006674 |
| IRS990/CYGrantsAndSimilarPaidAmt | 0 | 0 |
| IRS990/CYInvestmentIncomeAmt | 0 | 795309 |
| IRS990/CYOtherExpensesAmt | 0 | 816692 |
| IRS990/CYOtherRevenueAmt | 0 | 1027 |
| IRS990/CYProgramServiceRevenueAmt | 0 | 0 |
| IRS990/CYRevenuesLessExpensesAmt | 0 | -5488024 |
| IRS990/CYSalariesCompEmpBnftPaidAmt | 0 | 6474342 |
| IRS990/CYTotalExpensesAmt | 0 | 7291034 |
| IRS990/CYTotalFundraisingExpenseAmt | 0 | 0 |
| IRS990/CYTotalProfFndrsngExpnsAmt | 0 | 0 |
| IRS990/CYTotalRevenueAmt | 0 | 1803010 |
| IRS990/DecisionsSubjectToApprovaInd | 0 | 0 |
| IRS990/DeductibleArtContributionInd | 0 | 0 |
| IRS990/DeductibleNonCashContriInd | 0 | 0 |
| IRS990/DelegationOfMgmtDutiesInd | 0 | 0 |
| IRS990/DepreciationDepletionGrp/ManagementAndGeneralAmt | 0 | 24459 |
| IRS990/DepreciationDepletionGrp/TotalAmt | 0 | 24459 |
| IRS990/Desc | 0 | THE ORGANIZATION ENGAGES IN STUDY AND RESEARCH TO DEVELOP DATA AND NEW INSIGHTS TO ASSIST PHILANTHROPIC ORGANIZATIONS AND THE GENERAL PUBLIC IMPROVE THE EFFECTIVENESS AND IMPACT OF THEIR OWN GIVING. THROUGH STUDY AND RESEARCH, THE ORGANIZATION IS GAINING LEARNING AND EXPERIENCE ABOUT THE CAUSES ACROSS PHILANTHROPIC CATEGORIES, INCLUDING DIRECT AID, RESEARCH AND DEVELOPMENT, AND POLICY ADVOCACY, SO THAT FUTURE GIVING WILL HAVE THE BROADEST AND MOST MEANINGFUL LONG-TERM IMPACT ON THE LIVES OF AS MANY PEOPLE AS POSSIBLE. |
| IRS990/DescribedInSection501c3Ind | 0 | 1 |
| IRS990/DisregardedEntityInd | 0 | 0 |
| IRS990/DocumentRetentionPolicyInd | 0 | 1 |
| IRS990/DonorAdvisedFundInd | 0 | 0 |
| IRS990/DonorRstrOrQuasiEndowmentsInd | 0 | 0 |
| IRS990/ElectionOfBoardMembersInd | 0 | 0 |
| IRS990/EmployeeCnt | 0 | 31 |
| IRS990/EmploymentTaxReturnsFiledInd | 0 | 1 |
| IRS990/EngagedInExcessBenefitTransInd | 0 | 0 |
| IRS990/ExpenseAmt | 0 | 7018156 |
| IRS990/FamilyOrBusinessRlnInd | 0 | 1 |
| IRS990/FederalGrantAuditRequiredInd | 0 | 0 |
| IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt | 0 | 27300 |
| IRS990/FeesForServicesAccountingGrp/TotalAmt | 0 | 27300 |
| IRS990/FeesForServicesLegalGrp/ManagementAndGeneralAmt | 0 | 18585 |
| IRS990/FeesForServicesLegalGrp/TotalAmt | 0 | 18585 |
| IRS990/FeesForServicesOtherGrp/ManagementAndGeneralAmt | 0 | 105560 |
| IRS990/FeesForServicesOtherGrp/ProgramServicesAmt | 0 | 121022 |
| IRS990/FeesForServicesOtherGrp/TotalAmt | 0 | 226582 |
| IRS990/ForeignActivitiesInd | 0 | 0 |
| IRS990/ForeignFinancialAccountInd | 0 | 0 |
| IRS990/ForeignOfficeInd | 0 | 0 |
| IRS990/Form8282PropertyDisposedOfInd | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 0 | 5.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 1 | 4.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 2 | 1.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 3 | 1.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 4 | 4.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt | 5 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 0 | 0.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 1 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 2 | 0.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 3 | 0.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 4 | 2.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 5 | 0.50 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 6 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 7 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 8 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 9 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt | 10 | 40.00 |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/HighestCompensatedEmployeeInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd | 4 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 0 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 1 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 2 | X |
| IRS990/Form990PartVIISectionAGrp/OfficerInd | 3 | X |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 6 | 87691 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 7 | 49409 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 8 | 43053 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 9 | 47521 |
| IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt | 10 | 36434 |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 0 | CARI TUNA |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 1 | ALEXANDER BERGER |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 2 | DIVESH MAKAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 3 | DUSTIN MOSKOVITZ |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 4 | HOLDEN KARNOFSKY |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 5 | TOM VAN LOBEN SELS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 6 | DAVID ROODMAN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 7 | HEATHER YOUNGS |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 8 | JAMES SNOWDEN |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 9 | THOMAS DAVIDSON |
| IRS990/Form990PartVIISectionAGrp/PersonNm | 10 | JOSPEH CARLSMITH |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 6 | 268243 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 7 | 294962 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 8 | 272886 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 9 | 214446 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt | 10 | 205769 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 0 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 1 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 2 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 3 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 4 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 5 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 6 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 7 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 8 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 9 | 0 |
| IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt | 10 | 0 |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 0 | PRESIDENT/DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 1 | CEO/DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 2 | SECRETARY/DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 3 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 4 | DIRECTOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 5 | TREASURER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 6 | SENIOR ADVISOR |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 7 | SENIOR PROGRAM OFFICER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 8 | SENIOR PROGRAM OFFICER |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 9 | SENIOR RESEARCH FELLOW |
| IRS990/Form990PartVIISectionAGrp/TitleTxt | 10 | SENIOR ADVISOR |
| IRS990/Form990ProvidedToGvrnBodyInd | 0 | 1 |
| IRS990/FormationYr | 0 | 2015 |
| IRS990/FormerOfcrEmployeesListedInd | 0 | 0 |
| IRS990/FSAuditedInd | 0 | 0 |
| IRS990/FundraisingActivitiesInd | 0 | 0 |
| IRS990/GainOrLossGrp/OtherAmt | 0 | -1009 |
| IRS990/GainOrLossGrp/SecuritiesAmt | 0 | 198769 |
| IRS990/GamingActivitiesInd | 0 | 0 |
| IRS990/GoverningBodyVotingMembersCnt | 0 | 5 |
| IRS990/GrantsToIndividualsInd | 0 | 0 |
| IRS990/GrantsToOrganizationsInd | 0 | 0 |
| IRS990/GrantToRelatedPersonInd | 0 | 0 |
| IRS990/GrossAmountSalesAssetsGrp/OtherAmt | 0 | 7877 |
| IRS990/GrossAmountSalesAssetsGrp/SecuritiesAmt | 0 | 8611541 |
| IRS990/GrossReceiptsAmt | 0 | 10224668 |
| IRS990/GroupReturnForAffiliatesInd | 0 | 0 |
| IRS990/IncludeFIN48FootnoteInd | 0 | 0 |
| IRS990/IndependentAuditFinclStmtInd | 0 | 0 |
| IRS990/IndependentVotingMemberCnt | 0 | 5 |
| IRS990/IndivRcvdGreaterThan100KCnt | 0 | 22 |
| IRS990/IndoorTanningServicesInd | 0 | 0 |
| IRS990/InfoInScheduleOPartVIInd | 0 | X |
| IRS990/InformationTechnologyGrp/ManagementAndGeneralAmt | 0 | 27390 |
| IRS990/InformationTechnologyGrp/ProgramServicesAmt | 0 | 33825 |
| IRS990/InformationTechnologyGrp/TotalAmt | 0 | 61215 |
| IRS990/InsuranceGrp/ManagementAndGeneralAmt | 0 | 14474 |
| IRS990/InsuranceGrp/TotalAmt | 0 | 14474 |
| IRS990/InvestmentIncomeGrp/ExclusionAmt | 0 | 597549 |
| IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt | 0 | 597549 |
| IRS990/InvestmentInJointVentureInd | 0 | 0 |
| IRS990/InvestmentsPubTradedSecGrp/BOYAmt | 0 | 21359460 |
| IRS990/InvestmentsPubTradedSecGrp/EOYAmt | 0 | 18690470 |
| IRS990/IRPDocumentCnt | 0 | 10 |
| IRS990/IRPDocumentW2GCnt | 0 | 0 |
| IRS990/LandBldgEquipAccumDeprecAmt | 0 | 27374 |
| IRS990/LandBldgEquipBasisNetGrp/BOYAmt | 0 | 22453 |
| IRS990/LandBldgEquipBasisNetGrp/EOYAmt | 0 | 88483 |
| IRS990/LandBldgEquipCostOrOtherBssAmt | 0 | 115857 |
| IRS990/LegalDomicileStateCd | 0 | CA |
| IRS990/LessCostOthBasisSalesExpnssGrp/OtherAmt | 0 | 8886 |
| IRS990/LessCostOthBasisSalesExpnssGrp/SecuritiesAmt | 0 | 8412772 |
| IRS990/LoanOutstandingInd | 0 | 0 |
| IRS990/LobbyingActivitiesInd | 0 | 0 |
| IRS990/LocalChaptersInd | 0 | 0 |
| IRS990/MaterialDiversionOrMisuseInd | 0 | 0 |
| IRS990/MembersOrStockholdersInd | 0 | 0 |
| IRS990/MethodOfAccountingAccrualInd | 0 | X |
| IRS990/MinutesOfCommitteesInd | 0 | 1 |
| IRS990/MinutesOfGoverningBodyInd | 0 | 1 |
| IRS990/MissionDesc | 0 | THE MISSION OF OPEN PHILANTHROPY IS TO STUDY AND TO ENGAGE IN RESEARCH ANALYZING THE MOST PROMISING OPTIONS FOR ENSURING THAT PHILANTHROPY HAS A LASTING IMPACT ON IMPROVING THE LIVES OF AS MANY PEOPLE AS POSSIBLE. |
| IRS990/MoreThan5000KToIndividualsInd | 0 | 0 |
| IRS990/MoreThan5000KToOrgInd | 0 | 0 |
| IRS990/NetAssetsOrFundBalancesBOYAmt | 0 | 26365457 |
| IRS990/NetAssetsOrFundBalancesEOYAmt | 0 | 21524699 |
| IRS990/NetGainOrLossInvestmentsGrp/ExclusionAmt | 0 | 197760 |
| IRS990/NetGainOrLossInvestmentsGrp/TotalRevenueColumnAmt | 0 | 197760 |
| IRS990/NetUnrelatedBusTxblIncmAmt | 0 | 0 |
| IRS990/NetUnrlzdGainsLossesInvstAmt | 0 | 647266 |
| IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt | 0 | 26365457 |
| IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt | 0 | 21524699 |
| IRS990/NoListedPersonsCompensatedInd | 0 | X |
| IRS990/NondeductibleContributionsInd | 0 | 0 |
| IRS990/OccupancyGrp/ManagementAndGeneralAmt | 0 | 953 |
| IRS990/OccupancyGrp/ProgramServicesAmt | 0 | 29508 |
| IRS990/OccupancyGrp/TotalAmt | 0 | 30461 |
| IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt | 0 | 16318 |
| IRS990/OfficeExpensesGrp/ProgramServicesAmt | 0 | 57440 |
| IRS990/OfficeExpensesGrp/TotalAmt | 0 | 73758 |
| IRS990/OfficerMailingAddressInd | 0 | 0 |
| IRS990/OperateHospitalInd | 0 | 0 |
| IRS990/Organization501c3Ind | 0 | X |
| IRS990/OrganizationFollowsFASB117Ind | 0 | X |
| IRS990/OtherChangesInNetAssetsAmt | 0 | 0 |
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| IRS990/OtherExpensesGrp/TotalAmt | 0 | 36589 |
| IRS990/OtherRevenueMiscGrp/BusinessCd | 0 | 900099 |
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| IRS990/PayrollTaxesGrp/TotalAmt | 0 | 305195 |
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| IRS990/PensionPlanContributionsGrp/TotalAmt | 0 | 678872 |
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| IRS990/PrincipalOfficerNm | 0 | CARI TUNA |
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| IRS990/ReportLandBuildingEquipmentInd | 0 | 1 |
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| IRS990ScheduleJ/IdemnificationGrossUpPmtsInd | 0 | X |
| IRS990ScheduleJ/InitialContractExceptionInd | 0 | 0 |
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| IRS990/ScheduleJRequiredInd | 0 | 1 |
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| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsFilingOrgAmt | 2 | 20053 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsFilingOrgAmt | 3 | 30368 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsFilingOrgAmt | 4 | 13434 |
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| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsRltdOrgsAmt | 2 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsRltdOrgsAmt | 3 | 0 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/NontaxableBenefitsRltdOrgsAmt | 4 | 0 |
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| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/OtherCompensationFilingOrgAmt | 2 | 8806 |
| IRS990ScheduleJ/RltdOrgOfficerTrstKeyEmplGrp/OtherCompensationFilingOrgAmt | 3 | 615 |
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