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Judgment & ambiguity · When to act

Your systematic rebalance rule has just been tripped, but only by a hair, transaction costs and market impact would eat much of the tracking benefit, and the drift may reverse on its own by next session. Do you trade the rebalance or let it ride?

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I weigh the rebalance against its cost, because a rule that ignores transaction costs quietly loses money at the margin.

The full answer: structure, worked example, likely follow-up.

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