The 14 Biggest IPOs in History

The 14 Biggest IPOs in History

Enel S.p.A.

Deal Size: $16.452 billion
Date: November 1, 1999

Ente Nazionale per L'Energie Elettrica, or Enel, is Italy's largest power company. It became Italy's largest company by market cap and Europe's largest IPO when the state sold off more than 30 percent of the company in a 1999 offering.

REUTERS/Max Rossi