OREANDA-NEWS. May 17, 2011. BM&FBOVESPA hereby informs you that the exercise of stock options on Monday in the Equities market generated BRL 2.21 billion, of which BRL 1.13 billion in call options and BRL 1.07 billion in put options. The options with the largest volumes during the exercise were:

Vale PNA at BRL 37.48 per stock totaled BRL 355.72 million in call options;

Vale PNA at BRL 45.48 per stock totaled BRL 189.06 million in put options;

Petrobras PN at BRL 23.58 per stock totaled BRL 156.74 million in call options;

Vale PNA at BRL 40.74 per stock totaled BRL 99.76 million in call options;

and Petrobras PN at BRL 24.95 per stock totaled BRL 81.61 million in put options.