| AARP | WASHINGTON | $10,969,160,920 |
| AMERICAN NATIONAL RED CROSS | WASHINGTON | $3,916,983,933 |
| GAVI ALLIANCE | WASHINGTON | $2,547,417,284 |
| GEORGETOWN UNIVERSITY | WASHINGTON | $2,296,035,338 |
| NATIONAL ASSOCIATION OF LETTER CARRIERS | WASHINGTON | $2,203,167,533 |
| SMITHSONIAN INSTITUTE | WASHINGTON | $1,911,142,906 |
| CHILDRENS HOSPITAL | WASHINGTON | $1,872,813,787 |
| HOWARD UNIVERSITY | WASHINGTON | $1,433,002,000 |
| AMERICAN UNIVERSITY | WASHINGTON | $929,602,491 |
| FIAT LUX RISK AND INSURANCE COMPANY | WASHINGTON | $842,304,486 |
| AMERICAN CHEMICAL SOCIETY | WASHINGTON | $819,099,460 |
| PAYPAL CHARITABLE GIVING FUND | WASHINGTON | $813,412,937 |
| AMERICAN FOREIGN SERVICE PROTECTIVE ASSOCIATION | WASHINGTON | $687,349,940 |
| NEW VENTURE FUND | WASHINGTON | $662,364,100 |
| NATIONAL FISH AND WILDLIFE FOUNDATION | WASHINGTON | $584,225,222 |
| LEGAL SERVICES CORPORATION | WASHINGTON | $572,829,932 |
| UNITED MINE WORKERS OF AMERICA 1993 BENEFIT PLAN AND TRUST | WASHINGTON | $541,575,011 |
| PHARMACEUTICAL RESEARCH AND MANUFACTURERS OF AMERICA | WASHINGTON | $521,348,217 |
| JOHN F KENNEDY CENTER FOR THE PERFORMING ARTS | WASHINGTON | $516,578,163 |
| ASSOCIATION OF UNIVERSITIES FOR | WASHINGTON | $468,809,827 |
| PEW CHARITABLE TRUSTS | WASHINGTON | $467,971,224 |
| THE ASPEN INSTITUTE INC | WASHINGTON | $443,841,184 |
| CATHOLIC UNIVERSITY OF AMERICA | WASHINGTON | $425,408,328 |
| MEDICAL FACULTY ASSOCIATES INC | WASHINGTON | $418,593,481 |
| NATIONAL EDUCATION ASSOCIATION OF THE UNITED STATES | WASHINGTON | $408,913,922 |
| ASSETS UNDER MOVEMENT | WASHINGTON | $396,906,311 |
| WORLD WILDLIFE FUND INC | WASHINGTON | $366,655,209 |
| NATIONAL ACADEMY OF SCIENCES | WASHINGTON | $361,712,009 |
| NATIONAL PUBLIC RADIO INC | WASHINGTON | $354,056,068 |
| ASSOCIATION OF AMERICAN MEDICAL COLLEGES | WASHINGTON | $353,956,949 |
| NATIONAL GEOGRAPHIC SOCIETY | WASHINGTON | $340,516,012 |
| WORLD CENTRAL KITCHEN INCORPORATED | WASHINGTON | $327,840,221 |
| WINDWARD FUND | WASHINGTON | $308,245,754 |
| POPULATION SERVICES INTERNATIONAL | WASHINGTON | $306,308,594 |
| NATIONAL ENDOWMENT FOR DEMOCRACY | WASHINGTON | $298,045,011 |
| INTERNATIONAL CITY MANAGEMENT ASSOCIATION RETIREMENT CORPORATION | WASHINGTON | $290,077,681 |
| SERVICE EMPLOYEES INTERNATIONAL UNION | WASHINGTON | $280,796,391 |
| INTERNATIONAL BACCALAUREATE ORGANIZATION | WASHINGTON | $270,523,757 |
| KIPP DC PUBLIC CHARTER SCHOOLS | WASHINGTON | $263,067,055 |
| UNITED FOOD AND COMMERCIAL WORKERS INTERNATIONAL UNION | WASHINGTON | $261,789,459 |
| GALLAUDET UNIVERSITY | WASHINGTON | $237,007,252 |
| INTERNATIONAL BROTHERHOOD OF ELECTRICAL WORKERS | WASHINGTON | $227,767,132 |
| INTERNATIONAL BROTHERHOOD OF ELECTRICAL WORKERS | WASHINGTON | $224,103,539 |
| INTERNATIONAL BROTHERHOOD OF TEAMSTERS | WASHINGTON | $223,777,901 |
| HUMANE WORLD FOR ANIMALS INC | WASHINGTON | $216,548,337 |
| WORLD RESOURCES INSTITUTE | WASHINGTON | $213,044,770 |
| FORGOOD INC | WASHINGTON | $204,438,959 |
| PATIENT ACCESS NETWORK FOUNDATION | WASHINGTON | $203,018,273 |
| AARP FOUNDATION | WASHINGTON | $202,932,133 |
| UNITED STATES HOLOCAUST MEMORIAL COUNCIL | WASHINGTON | $198,748,025 |
| AMERICAN FEDERATION OF STATE COUNTY & MUNICIPAL EMPLOYEES | WASHINGTON | $190,261,936 |
| CHILDRENS NATIONAL | WASHINGTON | $180,151,111 |
| AMERICAN BANKERS ASSOCIATION | WASHINGTON | $176,137,760 |
| NATIONAL PARK FOUNDATION | WASHINGTON | $173,752,964 |
| DKT INTERNATIONAL INC | WASHINGTON | $162,225,944 |
| UNITED NEGRO COLLEGE FUND INC | WASHINGTON | $158,921,384 |
| COMMUNICATIONS WORKERS OF AMERICA AFL-CIO CLC | WASHINGTON | $147,710,670 |
| CHILDRENS HOSPITAL FOUNDATION | WASHINGTON | $117,997,955 |
| CARNEGIE INSTITUTION OF WASHINGTON | WASHINGTON | $106,544,070 |
| MORRIS AND GWENDOLYN CAFRITZ FOUNDATION | WASHINGTON | $98,144,895 |
| GUARANTY ASSOCIATION BENEFITS COMPANY | WASHINGTON | $54,747,905 |
| FOUNDATION FOR FOOD AND AGRICULTURE RESEARCH | WASHINGTON | $49,062,378 |
| LTC REINSURANCE PCC | WASHINGTON | $34,299,752 |