Yes... you could play the short month... but.... most people would convert the longer term monthes of the diagonal into a Put Spread by selling a calendar against it.... then add a Bear Put Spread and lock into a Butterfly. It would all depend on their market outlook. See if this helps.
Here's an Example:
Original Trading Plan: (long Vega)
Enter Diagonal when Market was at 1400, VIX = 10 (Long VEGA)
B Jan 1325p
S Dec 1350p
On VIX spike Monday (15%)
Sell Jan/Dec Put Calendar against original Diagonal (taking VEGA profit)
S Jan 1350p
B Dec 1350c
Adjusted Position is now a Bull Put Spread (VEGA neutralized):
Long Jan 1325p
Short Jan 1350p
Trading Plan Going Forward:
1. You can now hold 1325/1350 Jan Put Spread (directional or play THETA ) or
2. Purchase a Jan 1375/1350 Bear Put Spread forming a 1325/1350/1375 Put Butterfly. Locking in profit, reducing return potential, but freeing up margin or
3. Adjust back into the Original Diagonal, after a VIX return to 10ish.
This is one of the major advantages of the Diagonal over the Spread. You can play VEGA!
Murray
Here's an Example:
Original Trading Plan: (long Vega)
Enter Diagonal when Market was at 1400, VIX = 10 (Long VEGA)
B Jan 1325p
S Dec 1350p
On VIX spike Monday (15%)
Sell Jan/Dec Put Calendar against original Diagonal (taking VEGA profit)
S Jan 1350p
B Dec 1350c
Adjusted Position is now a Bull Put Spread (VEGA neutralized):
Long Jan 1325p
Short Jan 1350p
Trading Plan Going Forward:
1. You can now hold 1325/1350 Jan Put Spread (directional or play THETA ) or
2. Purchase a Jan 1375/1350 Bear Put Spread forming a 1325/1350/1375 Put Butterfly. Locking in profit, reducing return potential, but freeing up margin or
3. Adjust back into the Original Diagonal, after a VIX return to 10ish.
This is one of the major advantages of the Diagonal over the Spread. You can play VEGA!
Murray
Quote from Eric99:
Murray,
Can you elaborate on this conversion? Are you talking about selling the long-dated put and building a butterfly around the existing short?