回复 2# angela_c  
 
 
    Bearishness has been brewing in the derivatives market for some time. Options data shows holdings of December 2016 put options at $25, $30 and $35 a barrel have risen 41 percent in the last two months and open interest in those three contracts now equates to nearly 90 million barrels of oil. 
 
如何PUT油呢?  |