Thank you for that.
Is it liquid on the Equity Merval Index? from what I saw, it is usually used for hedging, not speculation, and it is not very liquid.
No volume on BigCharts: http://bigcharts.marketwatch.com/quickchart/quickchart.asp?symb=merval&insttype=&freq=1&show=&time=8
Without value, not much to discuss just one random chart.
Probably more like ZH territory.