这里有个几年前的data

Here are the alma maters of the CEOs of the top 10 Fortune 500 companies. 

As you can see, there's only one Ivy League undergrad degree represented here.

1. Doug McMillon (Wal-Mart Stores) — University of Arkansas (BS), University of Tulsa (MBA)
2. Rex Tillerson (Exxon Mobil) — University of Texas at Austin (BS)
3. John S. Watson (Chevron) — University of California, Davis (BA), University of Chicago (MBA)
4. Warren E. Buffett (Berkshire Hathaway) — University of Nebraska (BS), Columbia University (MS)
5. Tim Cook (Apple) — Auburn University (BS), Duke University (MBA)
6. Greg C. Garland (Phillips 66) — Texas A&M University (BS)
7. Mary Barra (General Motors) — General Motors Institute/Kettering University (BS), Stanford University (MBA)
8. Mark Fields (Ford Motor) — Rutgers University (BA), Harvard University (MBA)
9. Jeff Immelt (General Electric) — Dartmouth College (BA), Harvard University (MBA)
10. Joe Gorder (Valero Energy) — University of Missouri-St. Louis (BA), Our Lady of the Lake University (MBA)