IB and OX and ToS will allow it but the back month will be treated as a naked option. So if you have the margin for those naked options, you can do it. With risk-based haircut, the long options will be counted against the long to reduce the margin requirement and that is where the benefit comes in with the haircut.
I like your reverse vega play. Suppose I am going to do it now. STO Aug 1225 Put @ 7.3 BTO Sep 1200 Put @ 9.3 net debit 2.0 Case 1: Market going down at Aug. VIX increases, and BTC Aug 1225 Put for a loss, say at that time Aug 1225 Put @ 9.3 for a loss of $2. STO Dec 1175 Put, say @ 25 ( currently it is at 16.5). Then follow the adjustment in your post. Case 2: Market going sideway. No need to adjust. Let the front leg expires, and you still have some values for Sep 1220 Put. Case 3: Market goes up a lot at Aug b/c Fed announced no more rate hike. Aug 1225 Put expires worthless. Sep 1220 Put loses a lot more b/c vega decreases as the stock is further away from the strke. So in case 3, we are losing money, and how do we adjust our position?
Coach, I like to increase my leverage in order to make more $ without increasing my risk. I have been increasing my risk by trading very volatile stocks to get a good premium. It drives me crazy as I have to hedge it frequently. By increasing my leverage, and trading less volatile index like spx, I actually reduce my risk. My understanding is that haircut is only for market makers. For retail traders, there is no way to get haircut. Am I right? If not, how can we get haircut margin, and who will provide haircut margin? BTW, I am trading full-time. Percy
You cannot get a haircut trading retail. For you to get a risk-based haircut, you need to go through a prop or institution.
Today, made adjustment to existing position. BTC VLO Aug 67.5 call @1.25 STO VLO Sep 67.5 call @2.45 Initially I was trying to sell Sep 70 but didn't get a good fill, so I changed to Sep 67.5 call to get a better premium. Current position for VLO short Sep 67.5 long Dec 70 short Dec 75.
For a list of Proprietary Trading Firms (haircut margin) try this link http://www.utropix.com/jmowery/PropFirms.html