Is it possible to create a position that gains when Implied volatility increases, but is unaffected by delta, gamma and theta? Thanks in advance.
Yes, a forward vol position will do it for you - e.g. via a theta-neutral calendar. It is still going to have negative expectation on average, because of the term structure effects. If all you care is SPX vega, you should just buy a VIX futures and delta-hedge it.
I have seen that VIX futures are in contango >80% of the time. So, dealing with short term contracts might turn out to be really difficult, being either long or short! Time decay is going to affect my long position whereas a (sudden) raise in volatility will destroy short positions. Do you think it would be safer to move to longer term maturities? A raise in volatility will indeed shift up all the curve (I can't imagine the degree, though) while time decay should affect less compared to short term maturities. Not to mention, way longer maturities... I take it that long term straddles and long term vix futures share this strong likeness, in that, flat gamma/theta, correct?
I guess you expect Volatility to go up shortly and want to be long it. Here is a position from my portfolio: Long VXX Dec 10 Short VXX Dec 15 Many variations available...can be done from any options enabled account.
So, is that basically what vol.arb is all about? What do vol.arb traders/funds usually prefer? slow bleed? Now, those 2016 straddles suddenly make sense to me!
Also, as far as vol.arb is concerned, I often hear of terms like relative value, dispersion trades and directional volatility; while I think I understand the latter, I dunno anything about the first and secondo. Could anyone provide me with some clue? Thanks
One of the ways to trade vega only (well, almost only) is to buy a LEAP SPY put deep OTM. E.g. Jan 14 100. It moves mostly when SPY IV rises or falls. Delta is close to .1 and theta is negligible.