Penn is second on Forbes’ list of graduate schools attended by the most Fortune 100 CEOs.

Forbes released a study on September 28 that investigated how many Fortune 100 CEOs obtained graduate degrees and the percentage of CEOs who attended Ivy League institutions. Five of the Fortune 100 CEOs earned their graduate degree from Penn. Harvard University earned the top spot with seven graduates on the list, and Columbia University ranked third with three CEOs.

Forbes found that 54% of the Fortune 100 CEOs held graduate degrees, with 30% attending an Ivy League institution. Of the CEOs with graduate degrees, 59% earned an MBA, 16% earned doctor of law degrees, and 21% earned non-MBA master’s degrees. Forbes added that 69% of these CEOs attended private schools while 27% attended public schools.

Among the top 10 Fortune 100 CEOs, Amazon CEO Jeff Bezos was the only CEO to receive an undergraduate degree from an Ivy League school, Forbes reported. The study found 11% of Fortune 100 CEOs obtained an undergraduate degree from an Ivy League institution. 80% held undergraduate degrees from top public colleges such as Texas A&M University and the University of Michigan.