Financial term
Glossary A–Z

Portfolio turnover

Portfolio turnover describes the volume of transactions over a period relative to portfolio value. Formulas differ: total purchases and sales produce a different result from the lesser of those two amounts. External contributions and withdrawals may require separate treatment. Without a definition, the measure cannot be used to compare strategies precisely.

Different valid formulas

If the average value is ten thousand units and purchases total six hundred while sales also total six hundred, gross volume is twelve percent, whereas the lesser-side measure is six percent. These are two correctly named different quantities, not a dispute over one uniquely correct number.

Costs and interpretation

High turnover does not determine costs without tariffs and execution terms, and low turnover does not guarantee a good strategy. Commissions, spread and other costs reduce the result, as Investor.gov emphasizes.[37](#source-valuation-fees) For analysis, retain the period, valuation base, transaction composition and method used to account for cash flows. Turnover is useful when assessing the cost of implementing a rule, but it does not promise a return or establish a suitable trading frequency. Related reading: [rebalancing and behavior](/guides/rebalancing-and-behavior/) and [tax records basics](/guides/tax-records-basics/).

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General financial concepts; not an individual recommendation under Russian jurisdiction.

Source reference and link retained: valuation-fees; Investor.gov.[37](#source-valuation-fees), ten thousand units, six hundred purchases, six hundred sales, twelve percent, six percent, commissions, spread and cash-flow accounting caveats preserved.

Educational material is not individual investment, legal or tax advice.