Stock trading was briefly suspended Thursday morning as the protests dragged Egypt's benchmark stock index down nearly 10 percent to its lowest point in more than two years.
Meanwhile, social networking sites are calling for a mass rally Friday. The crowd is rallying against President Hosni Mubarak's three decades of authoritarian rule. The protestors have been inspired by the uprising in Tunisia.
The demonstrations have led to clashes with security forces, leaving at least six people dead.
Egyptian pro-reform advocate and Nobel peace laureate Mohamed ElBaradei is returning home to take part in the protests.