What is Turnover Ratio? (Plain English Definition)
Definition: Turnover ratio measures how frequently a fund buys and sells securities within its portfolio over a year, with higher turnover generally indicating higher costs.
Turnover Ratio Explained Simply
The turnover ratio shows what percentage of a fund's holdings are replaced during a year. A 20% turnover ratio means that one-fifth of the portfolio was sold and replaced with new securities. A 100% turnover means the entire portfolio was effectively replaced. Higher turnover generally leads to higher transaction costs and more taxable capital gains distributions.
Index ETFs typically have very low turnover -- often 3-5% per year -- because they only trade when the underlying index changes. Actively managed ETFs usually have much higher turnover, sometimes 50-100% or more, as managers frequently buy and sell securities based on their market views.
Turnover matters for two main reasons. First, each trade incurs transaction costs (commissions, bid-ask spreads) that reduce returns. Second, in taxable accounts, selling profitable positions triggers capital gains that must be distributed to shareholders. High turnover funds tend to be less tax-efficient, making them particularly costly in taxable investment accounts.
Turnover Ratio Example
An actively managed ETF with 80% annual turnover holds 100 stocks. Each year, 80 of those stocks are sold and replaced with different ones. Each trade involves bid-ask spreads and potential market impact, adding hidden costs of perhaps 0.3-0.5% per year. A comparable index ETF with 5% turnover replaces only 5 stocks per year, minimizing these costs. Over 20 years, the high-turnover fund's extra trading costs could reduce returns by 5-10% compared to the low-turnover fund.
Why Turnover Ratio Matters for ETF Investors
Turnover ratio is an often-overlooked cost factor that can significantly impact long-term returns, especially in taxable accounts. While the expense ratio gets most attention, high turnover creates additional hidden costs through trading expenses and tax inefficiency. For ETF investors, checking the turnover ratio is a useful due diligence step, especially when evaluating actively managed or factor-based ETFs. A fund with a 100% turnover ratio is essentially a completely different portfolio every year, which raises questions about the consistency of the strategy and increases costs. Low-turnover index ETFs remain the most cost-effective option for most investors.
Turnover Ratio vs Tax Efficiency
| Turnover Ratio | Tax Efficiency |
|---|---|
| Turnover ratio measures how frequently a fund buys and sells securities within its portfolio over a year, with higher turnover generally indicating higher costs. | See full definition of Tax Efficiency |
While turnover ratio and tax efficiency are related concepts, they serve different purposes in the world of ETF investing. Understanding both terms helps you make more informed decisions about which funds to include in your portfolio and how to evaluate their performance.
Related Terms
Deepen your understanding of ETF investing by exploring these related concepts:
Tax Efficiency
Tax efficiency measures how well an investment minimizes the taxes investors owe, with ETFs being among the most tax-efficient investment vehicles.
Expense Ratio
The expense ratio is the annual fee an ETF charges its shareholders, expressed as a percentage of your investment.
Capital Gain
A capital gain is the profit earned when you sell an investment for more than you originally paid for it.
Passive Investing
Passive investing is a strategy that aims to match market returns by tracking an index, rather than trying to beat the market through active stock selection.
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