OREANDA-NEWS. October 18, 2011. BM&FBOVESPA announces that the exercise of options on stocks on Monday in the BOVESPA segment generated BRL 3.31 billion, of which BRL 1.58 billion in call options and BRL 1.73 billion in put options. The options with the largest volumes in the exercise were:

Petrobras PN at BRL 24.91 per share totaled BRL 310.51 million in put options;

Petrobras PN at BRL 31.04 per share totaled BRL 286.18 million in put options;

Vale PNA at BRL 36.14 per share totaled BRL 283.37 million in call options;

Vale PNA at BRL 38.14 per share totaled BRL 202.05 million in call options;

and Petrobras PN at BRL 18.00 per share totaled BRL 171.10 million in call options.