| NEW VENTURE FUND | $460,798,902 | $420,857,504 |
| PATIENT ACCESS NETWORK FOUNDATION | $450,920,542 | $413,026,478 |
| FIAT LUX RISK AND INSURANCE COMPANY | $440,203,686 | $407,127,291 |
| AMERICAN FOREIGN SERVICE PROTECTIVE ASSOCIATION | $419,688,231 | $390,584,661 |
| ASSOCIATION OF UNIVERSITIES FOR RESEARCH IN ASTRONOMY INC | $369,877,759 | $368,088,355 |
| NATIONAL EDUCATION ASSOCIATION OF THE UNITED STATES | $377,146,115 | $356,588,871 |
| NATIONAL ACADEMY OF SCIENCES | $406,416,247 | $339,454,609 |
| CATHOLIC UNIVERSITY OF AMERICA | $338,897,227 | $328,994,502 |
| NATIONAL FISH AND WILDLIFE FOUNDATION | $287,239,368 | $283,639,002 |
| NATIONAL PUBLIC RADIO INC | $277,707,916 | $272,720,119 |
| WORLD WILDLIFE FUND INC | $286,350,088 | $266,981,193 |
| JOHN F KENNEDY CENTER FOR THE PERFORMING ARTS | $326,464,245 | $254,886,291 |
| INTERNATIONAL CITY MANAGEMENT ASSOCIATION RETIREMENT CORPORATION | $243,525,421 | $253,798,109 |
| AMERICAN PETROLEUM INSTITUTE | $238,520,840 | $249,963,292 |
| ASSOCIATION OF AMERICAN MEDICAL COLLEGES | $218,245,674 | $233,080,062 |
| DKT INTERNATIONAL INC | $232,538,629 | $230,773,895 |
| SERVICE EMPLOYEES INTERNATIONAL UNION | $280,468,565 | $228,138,617 |
| ACADEMY FOR EDUCATIONAL DEVELOPMENT | $202,437,786 | $213,308,566 |
| NATIONAL GALLERY OF ART | $226,167,201 | $208,958,620 |
| UNITED FOOD AND COMMERCIAL WORKERS INTERNATIONAL UNION | $251,804,153 | $205,329,046 |
| ELIZABETH GLASER PEDIATRIC AIDS FOUNDATION | $202,227,730 | $201,028,105 |
| NEIGHBORHOOD REINVESTMENT CORPORATION DBA NEIGHBORWORKS AMERICA | $172,554,294 | $199,580,101 |
| GALLAUDET UNIVERSITY | $203,714,766 | $198,554,913 |
| NATIONAL ENDOWMENT FOR DEMOCRACY | $197,425,890 | $196,835,030 |
| AMERICAN FEDERATION OF TEACHERS AFL-CIO PARENT ORGANIZATION | $205,278,806 | $195,991,510 |