I will never understand why this isn’t Investing 101...https://twitter.com/bennpeifert/status/1362908508237090816 …
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Replying to @JasonMutiny
What are your thoughts on *why* tail hedging works? Finance 101 says OTM put vols shd be bid up until impact of tail hedge on your portfolio was ~0; if not then short OTM puts have a negative risk premium — seems counterintuitive!
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Replying to @macrocephalopod @JasonMutiny
Why it *has* worked. Include the GFC in your back test to help sell it as a strategy. Everything is function of price.
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Replying to @sidprabhu @JasonMutiny
It true. I guess what I want to know is what’s the story for why it will continue to work in the future (ie why are puts still priced low enough that they will help rather than hurt the geometric return). Is it outlier blindness (behavioral) or is there a structural reason?
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Replying to @macrocephalopod @JasonMutiny
Hard to get paid on negative expected value trades that payoff once a decade.
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Which is why these are marketed on their negative covariance to a portfolio. The interesting question is how much expected value should you pay away for the diversification benefit,
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Replying to @sidprabhu @macrocephalopod
It’s not a belief in black swans or intelligence if it allows one to hold more long gdp assets than any other portfolio construction
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So by including long vol assets, the overall portfolio vol is theoretically dampened enough to allow an investor to leverage a higher point on the capital market line without loosing risk efficiency (sharpe)?
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Think it’s more subtle than that. It’s negatively correlated with the portfolio, but the negative correlation isn’t the point. The point is that the highly convex payoff in bad states more than makes up for the drag on returns in good states.
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It works basically because a big drawdown *really* hurts your cagr so if you can cap the big drawdowns you can have an outsized effect on portfolio cagr even if you are giving up some drift.
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Replying to @macrocephalopod @speakermaniac3 and
If you were of a certain mindset (or if you work in marketing) you could call it “nonlinear correlation”.
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Replying to @macrocephalopod @speakermaniac3 and
This is the theory anyway! Historical evidence so far seems to point to the theory being valid but who knows what the next 25 years holds
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