ETFs vs Mutual Funds

A mutual fund (opens in new tab) pools money from many investors and uses it to buy a collection of securities: typically stocks, bonds, or both. When you invest in a mutual fund, you own shares of the fund, not the underlying securities directly. The fund's portfolio manager, or an index algorithm, decides which securities to hold. Your return depends on how those holdings perform collectively, minus the fund's fees.

Mutual fund shares are priced once per day, after U.S. markets close. The price is called the net asset value, or NAV: the total value of the fund's holdings divided by the number of outstanding shares. If you place an order to buy or sell at 2:00 p.m., you do not know the exact price until the NAV is calculated at the end of the day. You cannot trade mutual fund shares throughout the day the way you can trade stocks.

Most mutual funds sold through employer retirement plans like 401(k)s are actively managed: a fund manager decides which stocks to hold, with the stated goal of beating a benchmark. Active management adds cost. The fund charges an expense ratio (an annual percentage fee drawn from the fund's assets), typically ranging from 0.50% to over 1.00% for actively managed funds. That fee comes out whether the fund beats the market or not. Decades of data show that most actively managed mutual funds trail their benchmark index after fees over long periods. Low-cost index mutual funds, which simply replicate an index rather than trying to beat it, have largely displaced actively managed funds as the default choice for long-term investors.

An exchange-traded fund (opens in new tab) works like a mutual fund in concept (it pools money from many investors to hold a basket of securities), but it trades on a stock exchange throughout the day at market prices, the same way an individual stock does. You can buy or sell an ETF at 10:00 a.m., 2:00 p.m., or any other time the market is open. The price fluctuates throughout the day based on the value of the underlying holdings and supply and demand for the ETF shares themselves.

Most ETFs track an index passively. A broad U.S. stock market ETF holds shares in hundreds or thousands of companies in proportion to their market value, with the goal of matching the index's performance rather than beating it. Because passive management requires minimal trading and research, the costs are low. Many index ETFs charge 0.03% to 0.10% annually, a fraction of the cost of an actively managed mutual fund. That cost difference compounds significantly over decades.

ETFs also have a structural tax advantage over mutual funds. When investors in a mutual fund sell their shares, the fund may need to sell underlying holdings to raise cash, which can trigger capital gains distributed to all remaining shareholders, including those who did not sell. ETFs use an in-kind creation and redemption process that generally avoids this. As a result, ETF investors typically pay capital gains taxes only when they personally sell their shares, not when other investors in the same fund do. This is a meaningful advantage in taxable accounts.

Cost. Index ETFs are generally cheaper than index mutual funds, and both are far cheaper than actively managed mutual funds. The difference between a 0.05% expense ratio and a 0.75% expense ratio is 0.70% per year. On a $50,000 account held for 20 years, that difference, compounded annually, reduces your ending balance by thousands of dollars. The fee runs every year, in every market condition, whether returns are positive or negative.

Taxes. In a taxable brokerage account, ETFs are more tax-efficient than most mutual funds because of the in-kind redemption mechanism described above. Inside a tax-advantaged account like an IRA or 401(k), this distinction largely disappears, since gains are not taxed until withdrawal (traditional) or not at all (Roth). If you are choosing between an index ETF and a comparable index mutual fund inside a retirement account, tax treatment is not a meaningful differentiator.

Trading. ETFs trade throughout the day like stocks. Mutual funds price once daily. For a long-term investor, intraday trading flexibility is rarely useful, but it does mean ETFs are easier to buy and sell at a specific price, which matters more if you need liquidity on short notice.

Minimums. Many mutual funds require a minimum initial investment of $1,000 or more. ETFs can generally be purchased for the price of a single share, and most brokerages now offer fractional shares, making the effective minimum very low. For investors starting with small amounts, ETFs are more accessible.

The practical conclusion for most investors: a low-cost index ETF is a reasonable default for broad market exposure in a taxable account. A low-cost index mutual fund is equally fine inside a retirement account. Both are regulated under the Investment Company Act of 1940 and must publish their holdings, fees, and objectives in a prospectus. Actively managed mutual funds have a high bar to justify their costs, and the evidence that most clear it over long periods is not strong.

All three Narstar portfolios are built from individual stocks, not ETFs or mutual funds. That is a deliberate choice, and it comes with real tradeoffs.

An index ETF buys every company in the index regardless of quality, valuation, or competitive position. We do not want to own every company. We want to own specific ones: dividend payers selected for cash flow in the Income portfolio, companies with durable competitive advantages in the Growth portfolio, and concentrated positions in smaller companies in the Speculative portfolio. That selectivity is the entire point.

The tradeoff is real. Individual stocks concentrate risk in ways a broad index does not. If a single holding has a serious problem, it affects the portfolio more than it would in a 500-company index. The portfolios can underperform a broad market index for extended periods, and they can lose more in a downturn if the specific companies held do poorly. Individual stock investing is not inherently better than index investing. It is different, with a higher variance of outcomes in both directions.

We also do not charge mutual fund expense ratios on top of an advisory fee. The only cost is the annual advisory fee: 0.60% for Income, 1.20% for Growth, 1.60% for Speculative. The holdings themselves carry no embedded management fee because they are individual stocks, not funds. The homepage fee calculator shows the dollar amount at any balance.

If you want broad, low-cost index exposure to hundreds of companies at once, an ETF through a robo-advisor or a self-directed brokerage account is likely the better fit. The robo-advisor vs. fee-only adviser article covers that comparison directly. Narstar is for investors who want specific companies selected and managed for them, with a clear fee and a human making the decisions.