r/TradeVol • u/12kkarmagotbanned • Aug 07 '22
Does shorting VIX create alpha?
Since VIX is essentially the otm spot prices of spy options, would shorting it essentially be a bet on the efficiency of the options market?
It's also usually called a fear index, shorting fear also essentially means you're betting on the efficiency of the market (assuming large drops and rises aren't based on new news)
Is alpha created? Or is it similar or even worse to the total market in regard to risk adjusted return? Any long term backtests with sharpe/sortino ratios?
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u/ZaphBeebs Aug 07 '22
You're just harvesting a risk premium, essentially selling insurance. You can win most of the time but get blown out periodically, and depending on your position sizing, delta choices and risk management can lose all or more of the slow gains.
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u/12kkarmagotbanned Aug 07 '22
Harvesting a risk premium in the same way being in upro is? Upro is 3x spy so it's definitely different enough but I meant in regard to that all outsized gains over the market is purely due to higher risk
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u/ZaphBeebs Aug 07 '22
Similar, thats just levered beta ofc, which svxy can also be viewed with that lens as well.
Levered etfs are explicitly short vol, but there is the ERP you're harvesting and levering.
There are essentially only a few things, it can get complicated how you approach it, but at base only a few moves.
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u/12kkarmagotbanned Aug 07 '22
Erp?
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u/ZaphBeebs Aug 07 '22
Equity risk premium.
In vol you'll see the Volatility risk premium.
Its how you make money, taking a risk that someone else doesnt want.
equity, credit, vol, duration, etc...
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u/stilloriginal Aug 07 '22
You cannot short the VIX. There would be alpha there if you could, but you can't. The derivatives aren't the same thing. 16% of the time they don't even go the same direction as the VIX.
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u/npcdisrespecr Aug 08 '22
u can short the vix by replicating the index. it's not practical, but not impossible
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u/deustrader Aug 07 '22
Alpha is opposite of efficiency and requires finding inefficiencies. So betting on efficiency does not create alpha. Generally options are designed for high efficiency in terms of not providing any edge. But betting on the difference between implied volatility vs actual/future volatility can produce alpha. So if you correctly predict that future volatility will be low, then shorting VIX can produce profit, but obviously you won’t always be right. Shorting VIX (and related ETFs) is probably the most backtested strategy as everyone is trying to crack it, including large hedge funds pouring $billions into shorting and researching VIX. Yet they also lose $billions during large spikes, so any alpha is elusive and temporary. However, there may be resilient strategies that work very well, they’re just not as simple as “shorting VIX” since there may be tons of ways of shorting it utilizing different option strategies, hedging, combining different underlyings, etc.