"Some of these secondary centers will really struggle over the coming years with vacancy, " said Harm Meijer, a property analyst at J.

WSJ: U.K. Retail Rents Drop as Stores Close

"The share price can partly be linked to the belief that Simon is going to do something, and something big, " said Harm Meijer, a senior analyst at J.

WSJ: Investors Ponder Simon Property's French Appetite

Harm Meijer, an analyst at J.

WSJ: Apartment Firm Hopes to Build on German Demand