Quote from Kedwards:
I'm hoping I'm just interpreting it wrong. You would expect the risk profile to go up as vol rises? Again, I'm just going to put it on and let it play out until the end of July and evaluate. Good mental exercise I suppose.
So, the position is:
- LONG 100 Aug 09 150 Calls
- SHORT 100 Oct 09 150 Calls
- LONG +533 AAPL Stock
The short calendar (long August, short October) got hammered today. The greeks were right about negative vega! lol. It's showing a loss of $1,930.
*Without the delta hedge (long aapl stock), obviously the loss is reduced, but even without it, the position took a loss today.
I read a discussion between Maverick74, ChrisM and some other folks about earning season calendars (search for a 2003 thread with short calendars in it, i already closed the link sorry), in which Mav said he preferred short calendar's for the vol
implosion. Which would directly correlate with why my short calendar got hammered in a positive vol move today, lol.
Quote from Kedwards:
- AAPL STOCK QTY: -520 shares
- Aug 09 145 Call QTY: -36
- Aug 09 155 Call QTY: +14
- Aug 09 180 Call QTY: +1
- Oct 09 145 Call QTY: +36
Greeks:
- Delta: -1.04
- Gamma : 3.51
- Theta: -13.40
- Vega: 567.19
Indeed, on the flipside, my original long calendar [
delta-gamma neutral, long vega trade] (position quoted above) was up strong today, $827.45. Overall though, the position is down -$1300.74, because the couple days after I entered the position, aapl was up, pushing vol down. Note, I added more calendars to it so its now -43 Aug 145 Calls, and +43 Oct 145 Calls.
Today was a pretty good selloff. If downside continues into next week and carries aapl with it (meaning higher vol), the position should be able to erase the losses and get to breakeven I think. Even if the market doesn't selloff, I still see aapl vol rising to 50%, so the position should be in good shape. It's still experimental, and I'll only know the results by the latter part of July. Or if I read all of Natenberg's Option Volatility and Pricing by then, I'll have a better grasp on vega lol.
I'm going to read this journal from 2005, maybe find some good info:
http://www.elitetrader.com/vb/showthread.php?s=&threadid=58716&highlight=calendar+spreads
Later!