Markets · 6 pages · 12 min

Why rebalancing sells what rose

Rebalancing trims a holding that grew past its target weight and adds to what lagged.

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From the opening

Rebalancing sells what rose because a rise makes that asset a larger share of the portfolio than the target mix allows. To restore the weights, the portfolio trims the winner and adds to whatever fell behind, which is a return to the recipe rather than a verdict that the winner is finished. The opening covers winners outgrow their target, trimming restores the weights, and laggards get refilled.

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Inside

  • Winners outgrow their target
  • Trimming restores the weights
  • Laggards get refilled
  • No target means no rebalance
  • Where the idea stops applying
  • A distinction worth keeping

Sources

  • Constant-mix rebalancing
  • Portfolio target weights