Straddle vs Strangle: Break-Evens and Margin
Straddle vs strangle, compared on the four things most guides skip: break-even math, margin on the short side, probability of profit, and expected move.
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Iron Condor vs Iron Butterfly: Break-Evens
Iron condor vs iron butterfly: the same four legs, one strike moved. Both break-evens worked out, plus the vega and fill costs each structure carries.
Credit Spread vs Debit Spread: Same Trade?
Credit spread vs debit spread: on the same strikes both verticals pay the same. See the payoff grid, the parity math, and the three things that really differ.
How to Roll an Option Position: Up and Out
How to roll an option position: close the near contract, open a further one. See what the net credit hides in your break-even and your assignment risk.