"Of course, by definition, bank accounts in Switzerland are a secret so we cannot get a full picture," said Davidson.
Robert Springborg, a professor at the Naval Postgraduate School and a Middle East scholar, said while the family is very wealthy, they have not been extremely overt with their wealth.
"One of the sons has a nice apartment in Cairo but nothing hugely lavish," said Springborg. "There are many other people in Egypt who live a more lavish lifestyle than them."
Whatever Mubarak's wealth is, Jamal said it is certain that whenever the president actually leaves office, there will be an investigation into his assets.
"There's not much of a cover-up," she said. "The people have already outed him as a corrupt leader."