I am trying to understand the leverage/margin differences between the different instruments and was hoping someone could double check me.
SPY
100 shares @ $207.29 = $20,729
Daytrade req margin = ($20,729 x .25) = $5182.25
Margin per $ in notional value = 20,729/5182.25 = 4:1
2x Oct 30 207.5...