 The first round of stocks placement for Ecopetrol started on 27 August 2007.In Nov. 2007, Ecopetrol held an initial public offering on the Colombian Stock Exchange (BVC), which raised $5.7 trillion Colombian Pesos (US$2.8 billion) from the sale of a 10.1 percent stake.On 18 September 2008 Ecopetrol announced the listing of its American Depositary Shares (ADSs) on the New York Stock Exchange (NYSE).