124 TABLE 4-2. Reverse hedge at July expiration. XYZ Price at Stock Expiration Profit 20 +$2,000 25 + 1,500 30 + 1,000 34 + 600 40 0 46 600 50 - 1,000 55 - 1,500 60 - 2,000 FIGURE 4-2. Reverse hedge {simulated straddle). C: 0 ~ ! co (/) (/) .3 ~-$600 e a. Profit on 2 Calls -$ 600 600 600 600 600 + 600 + 1,400 + 2,400 + 3,400 Stock Price at Expiration Part II: Call Option Strategies Total Profit +$ l ,400 + 900 + 400 0 600 0 + 400 + 900 + 1,400 The net margin required for this strategy is 50% of the underlying stock plus the full purchase price of the calls. In the example above, this would be an initial investment of $2,000 (50% of the stock price) plus $600 for the calls, or $2,600 total plus commissions. The short sale is marked to market, so the collateral requirement would grow if the stock rose. Since the maximum risk, before commissions, is $600, this means that the net percentage risk in this transaction is $600/$2,600, about 23%.