The margin requirements for a forward conversion are as follows:  

(Long Stock, Short Call and Long Put with the Same Strike and Exp.)


Initial below $3.00/share: 100% of the stock + the cost of the put option and no requirement on the short call  


Initial $3.00/share and above: 50% of the stock + the cost of the put option and no requirement on the short call  


Maintenance below $3.00/share and the call option is in the money: 100% of the strike price  


Maintenance below $3.00/share and the call option is out of the money: 100% of the stock price  


Maintenance above $3.00/share and the call option is in the money: 10% of the strike price  


Maintenance above $3.00/share and the call option is out of the money: 10% of the stock price