Exchange-traded funds have become a familiar investment vehicle for Americans who want exposure to baskets of stocks, bonds, or other assets. They trade on exchanges throughout the trading day, much like individual stocks.
However, an ETF's market price is not always exactly equal to the value of the investments it holds. Understanding net asset value, premiums, discounts, and bid-ask spreads can help investors make more informed trading decisions.
What is net asset value?
An ETF's net asset value, or NAV, represents the value of its assets minus its liabilities, divided by the number of outstanding shares. It provides an estimate of what each fund share is worth based on the underlying portfolio.
Retail investors generally buy and sell ETF shares at market prices on an exchange. Those prices can differ from the fund's NAV.
Premiums and discounts
An ETF trades at a premium when its market price is higher than its NAV. It trades at a discount when its market price is lower.
For example, imagine an ETF with an NAV of $100 per share. If it trades for $102, buyers are paying a premium. If it trades for $98, it is trading at a discount.
These differences may be temporary, but they can matter. Buying at a large premium may mean paying more than the underlying holdings are valued at, while selling at a discount may mean receiving less.
The bid-ask spread
The bid is the highest price a buyer is currently willing to pay. The ask is the lowest price a seller is currently willing to accept. The difference is called the bid-ask spread.
A wide spread can increase the cost of entering or exiting an investment. Funds with lower trading activity or less liquid underlying assets may have wider spreads, although liquidity varies by fund and market conditions.
What investors can check
Before buying an ETF, investors can review its prospectus, daily NAV information, market price, historical premiums and discounts, and median bid-ask spread. Trading during periods of market stress or when underlying markets are closed may create additional pricing uncertainty.
A low expense ratio alone does not tell the whole story. Trading costs and the fund's structure also matter.
Bottom line: ETFs are convenient, but investors should look beyond the ticker symbol and advertised fee. Market price, NAV, and trading spreads all affect what an investor actually pays.
This article is for educational purposes and is not individualized investment advice.
