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Diego Parrilla

๐Ÿ‘ค Speaker
646 total appearances

Appearances Over Time

Podcast Appearances

The MOST Important Thing
Why even our best Models Fail Us: The Illusion of Control Over Randomness

And what you see is that as volatility goes up, if correlations remain negative, then portfolio risk increases, but relatively marginally.

The MOST Important Thing
Why even our best Models Fail Us: The Illusion of Control Over Randomness

But what happens if I shook correlations, leaving volatility unchanged?

The MOST Important Thing
Why even our best Models Fail Us: The Illusion of Control Over Randomness

What you see is that the portfolio risk is significantly more sensitive to correlation than it is to liquidity on a standalone basis.

The MOST Important Thing
Why even our best Models Fail Us: The Illusion of Control Over Randomness

But what happens in practice is that the increase in volatility compounds and polarizes correlation from plus one, everything goes to plus one or minus one.

The MOST Important Thing
Why even our best Models Fail Us: The Illusion of Control Over Randomness

And so as volatility goes up and you start getting your valued risk increases, you get a margin call from the exchange, you start to force liquidation and deleveraging and correlations start to polarize between, let's say, crowded consensus positioning, etc.

The MOST Important Thing
Why even our best Models Fail Us: The Illusion of Control Over Randomness

What you end up, it's the compounding of volatility and correlation impacting liquidity through a negative feedback loop.

The MOST Important Thing
Why even our best Models Fail Us: The Illusion of Control Over Randomness

And what you end up having is risk, I love this expression in English, literally off the charts.

The MOST Important Thing
Why even our best Models Fail Us: The Illusion of Control Over Randomness

This is what it means.

The MOST Important Thing
Why even our best Models Fail Us: The Illusion of Control Over Randomness

It went off the charts.

The MOST Important Thing
Why even our best Models Fail Us: The Illusion of Control Over Randomness

So what you thought was effectively a very well-diversified portfolio with low risk ended up falling in this risk of false diversification and hidden leverage.

The MOST Important Thing
Why even our best Models Fail Us: The Illusion of Control Over Randomness

That's in a way what's happening with the 60-40 potentially, where you're in that quadrant two, where volatility increases, fixed income comes to the rescue.

The MOST Important Thing
Why even our best Models Fail Us: The Illusion of Control Over Randomness

What happens when correlations break?

The MOST Important Thing
Why even our best Models Fail Us: The Illusion of Control Over Randomness

And what happens, you know, as this crisis mechanically take us to that level?

The MOST Important Thing
Why even our best Models Fail Us: The Illusion of Control Over Randomness

And these are things like the VIX kicking in and inflation or whatever.

The MOST Important Thing
Why even our best Models Fail Us: The Illusion of Control Over Randomness

The challenge with high inflation, and the reason I agree with you,

The MOST Important Thing
Why even our best Models Fail Us: The Illusion of Control Over Randomness

is that high inflation is the path for lower fixed income and lower equities potentially.

The MOST Important Thing
Why even our best Models Fail Us: The Illusion of Control Over Randomness

And that exposes that correlation risk, increases volatility, et cetera, et cetera.

The MOST Important Thing
Why even our best Models Fail Us: The Illusion of Control Over Randomness

And in some ways, this nightmare of the tariffs has been, again, we keep it evergreen, but the idea is that it's a path where you're effectively increasing inflation, volatility, uncertainty, destroying value.

The MOST Important Thing
Why even our best Models Fail Us: The Illusion of Control Over Randomness

And that's why I think at first instance was so negative.

The MOST Important Thing
Why even our best Models Fail Us: The Illusion of Control Over Randomness

And you have, in the case of the US, this trifecta of lower US fixed income, lower US equity and lower dollar, which is just an emerging market behavior.