The Real Difference between the VIX and VXX

    Posted by klatuu on 15th of Sep 2010 at 03:43 pm

    Pebs,

    The Major difference between the $VIX and VXX is this: The $VIX measures the premium the market as a whole is getting for options that are being sold. This is calculated automatically, like other indicies. Many large funds and firms like to hedge their overall market positions and found the VIX moved opposite to the market in general (a negative correlation). So, the exchange responded by creating a futures contract (VX) which was tied to the $VIX as it's underlying security. As the $VIX rose, the contract would have more value and it's price would rise. However, they added a feature to this contract not normally seen in the USA; they made the contract conform to European Style of contracts rather than the American Style of contracts. What difference does this make, you ask?

    A European contract cannot be called away from the seller until the end of the month, while an American Style contract may be called away (assigned) before it's expiration date. While this sounds like a little detail, it has the effect of not moving prices in step with the $VIX on those futures contracts (VX). This gives the buyer and seller quite a bit more discretion in determining price for the duration of the contract, except during the last day or so of expiration. Only at expiration -settlement, does the price of the contract have to come close the $VIX index. (It's actually the first tick of the Wednesday after the Tuesday the contract expires, but that's too much detail). So, that explains why the VX futures contracts don't exactly track the $VIX. Now, why doesn't VXX track the $VIX?

    Since the $VIX is tradeable only through the VX futures contract, an ETF/ETN must have an underlying security on which to trade, meaning something has to have a real value attached to it when creating a financial derivative product. So, the stock of the ETF VXX uses the VX contracts and it (the  VXX) needs to track the price of the underlying. Hence the VXX is a proxy for the VX contract which approximates the $VIX like it's being held together with a mile long rubber band.

     

    I hope this explains why you see the difference between the 4% upmove in the $VIX and the 0.8% down move in the VXX. You can explain it away as 'anticipation'. Buyers and sellers are anticipating what the contract price will be near expiration rather than what it will be tomorrow.

    BTW: The VIX Options are tied to the VX contract, so, it doesn't offer any tighter relationship to the $VIX than VX.

     

    Klatuu

     

    Title: New VIX Tracking Product I

    Posted by pthoreson on 15th of Sep 2010 at 05:40 pm
    Title: New VIX Tracking Product

    Title: VXX closing negative while

    Posted by pthoreson on 15th of Sep 2010 at 05:07 pm
    Title: VXX closing negative while VIX closed positive

    Thanks, I needed that, Klatuu! So...if

    Posted by 4iron on 15th of Sep 2010 at 04:39 pm

    Thanks, I needed that, Klatuu!

    So...if next Tuesday is expiry of the current VX contract the VXX will converge with $VIX more precisely Wednesday morning?  Or never as it will now loosely conform to the Dec VX contract?

    Thanks!

    Thanks for the explanation.....I have

    Posted by hawkinslf on 15th of Sep 2010 at 04:05 pm

    Thanks for the explanation.....I have been wondering about the divergence as well as I am holding VXX as a hedge.

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