You gotta go deeper than that. Why does it appear to do better? Because it keeps risk exposures closer to what you want, rather than what the market have you. Is there a better way to do that than rebalancing on a fixed calendar schedule? Yes.
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Replying to @therobotjames @0xTurdleTrader
Not all portfolio produce better returns when rebalanced. Sometimes rebalancing produces lower returns. The premium doesn't come from risk, it comes from holding the proper portfolio for compounding.
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Replying to @breakingthemark @0xTurdleTrader
If trading at weights other than the ones you thought were optimal satisfies your objectives better - then your weights weren't optimal. That's a portfolio construction problem not a rebalancing problem
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Replying to @therobotjames @0xTurdleTrader
It's true that the weights to maximize the rebalancing premium are not necessarily optimal for your objectives. But that doesn't mean the premium doesn't exist if it doesn't exist in your portfolio.
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Replying to @breakingthemark @0xTurdleTrader
What exactly do you mean by the "rebalancing premium". I don't think it's a real thing
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Replying to @therobotjames @0xTurdleTrader
The additional return found when rebalancing. In the crypto example, why did the monthly rebalanced portfolio return more than the untouched portfolio? That difference is a premium. And why did the daily rebalanced portfolio return more, than the monthly rebalanced portfolio?
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Replying to @breakingthemark @0xTurdleTrader
That's backwards to how I would think about it. There is a penalty to letting the market dictate your risk exposures for you. Keeping them in line is just basic table stakes trading - not a premium.
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Robot James 🤖 🏖 Retweeted macrocephalopod
Robot James 🤖 🏖 added,
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Replying to @therobotjames @0xTurdleTrader
Right so there is a natural path you would expect with no action. So the rebalance premium is return above what the natural return would be.
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Yeah robot has this right imo. Rebalancing is table stakes, that should be your benchmark (and in many professionally managed portfolios it literally is). Not rebalancing back to target weights is negative alpha.
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I agree there is a difference between rebalancing and not rebalancing, and over the long term not rebalancing is worse. But you’re not “earning a premium” you are “avoiding a penalty” (the penalty for being underdiversified). Maybe it’s just semantics.
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Replying to @macrocephalopod @breakingthemark and
In certain contexts rebalancing induces negative convexity but the whole discussion has a distinction-without-a-difference flavour.
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