On this page
- Market price and NAV answer different questions
- Build NAV per share from net assets
- Use NAV as the percentage denominator
- Check the reference time before calling a gap mispricing
- Separate a NAV premium from the bid-ask spread
- Creation and redemption are not a retail cash-out guarantee
- Common questions about ETF market price and NAV
- Sources and scope
An ETF's market price is the price at which its shares trade on an exchange. Its net asset value, or NAV, is a calculation of the fund's net assets per share. The two numbers can differ: a price above NAV is a premium, and a price below NAV is a discount. Neither difference, by itself, promises a profit.
Start by identifying the price, the NAV per share and the time each represents. You can then calculate their percentage difference without confusing a valuation reference with a price you can actually receive.
Market price and NAV answer different questions
The market price answers, “At what price are shares trading?” NAV per share answers, “What is the fund's calculated net asset value for each share?” In its ETF investor bulletin, the US Securities and Exchange Commission explains that ETF shares trade during the day at market prices, while the funds calculate NAV per share every business day.
That bulletin concerns ETFs registered as open-end investment companies or unit investment trusts under the US Investment Company Act of 1940. It does not cover every exchange-traded product, such as exchange-traded notes. The fund structure matters; the letters ETF should not replace the actual fund information.
A fund share represents an interest in the portfolio. It does not mean you personally hold each underlying company's shares. That distinction is part of our guide to investing, trading and speculation. Here, the narrower question is how to compare the fund share's price with its NAV.
Build NAV per share from net assets
Imagine a fund with assets worth 10,500 currency units, liabilities of 500 currency units and 100 shares outstanding. “CU” below means an invented currency unit, not a live currency or fund quote. All three inputs belong to the same fictional calculation snapshot.
The formula is NAV per share = (fund assets − fund liabilities) ÷ shares outstanding. It follows the SEC bulletin's definition. Subtract the liabilities once, then divide the net amount by the share count. Comparing a share price with the fund's total 10,000 CU would mix a per-share value with a whole-fund amount.
The resulting 100 CU is a calculated reference for this snapshot. It is not a promise that you can buy or sell a share for 100 CU, or that the fund's assets will retain their value.
Use NAV as the percentage denominator
Keep the fictional NAV at 100 CU per share and compare three alternative market prices: 98, 100 and 102 CU per share. Assume the price and valuation references are matched to the same time and currency. These are alternative snapshots, not a sequence of prices or a record of returns.
The signed percentage difference is (market price ÷ NAV per share − 1) × 100. Equivalently, subtract NAV from the market price, divide that difference by NAV and multiply by 100.
For the 102 CU price, the difference is 2 CU per share. Dividing by NAV, 100 CU per share, gives a 2% premium. Dividing by the market price instead would answer a different percentage question.
A 2% discount does not establish that a share is a bargain or that you will earn 2%. The NAV and market price can both change. This calculation contains no purchase-to-sale price path, distribution, holding period, fees or taxes from which to calculate your investment return.
Check the reference time before calling a gap mispricing
A price from today and a NAV calculated for yesterday describe different times. Their difference can still be reported as a comparison with that older NAV, but it does not establish a simultaneous gap between today's market price and today's portfolio valuation.
The SEC bulletin discusses end-of-day NAV and information on fund websites as of the previous business day's close. When reading a real comparison, check the valuation date, the price's timestamp, the currency and which market-price measure is being used. A closing price, a last trade, a bid and an ask should keep their own labels.
Our three alternatives deliberately supply a matched reference time to make the denominator clear. They do not show how any real fund values every asset or how an intraday indicative estimate is produced. A displayed estimate or an older NAV does not, on its own, establish an executable price.
Separate a NAV premium from the bid-ask spread
The bid and ask describe the two sides of a market quote: the price a buyer is willing to pay and the price a seller is willing to accept. Their difference is the bid-ask spread. The SEC bulletin's spread example illustrates how buying at the ask and selling at the bid can create a cost even without a change in the quoted market.
A premium or discount compares a specified market price with NAV. A spread compares buying and selling quotes with each other. An ETF can have both a NAV comparison and a bid-ask spread; one number does not describe the other. Read the actual quote and trade conditions rather than treating NAV as an available price on either side.
Fund expenses and transaction charges can also affect what an investor keeps. The simple percentage table does not calculate those costs. Our comparison of order books and automated market makers addresses a separate question: how a stated trading mechanism and quantity can affect prices.
Creation and redemption are not a retail cash-out guarantee
For the US ETF structures described by the SEC, authorized participants are typically the institutions that create or redeem large blocks of shares directly with the fund. Other investors generally buy and sell shares in market transactions. Holding one ETF share does not automatically give you the same direct access as an authorized participant.
The SEC explains that arbitrage through creation and redemption generally helps keep an ETF's market price close to NAV. “Generally helps” leaves room for a difference. It does not promise that a discount will close, specify when it would close or guarantee a profit after costs.
To interpret a quoted premium or discount, the useful order is therefore: name the fund and reference, match the units and times, calculate with the NAV denominator, then keep trading quotes, costs and redemption rights separate. The result explains the comparison; it does not decide whether to make a transaction.
Common questions about ETF market price and NAV
Is NAV the guaranteed price I can sell for?
No. A calculated NAV per share and an exchange sale price are different things. In the cited US ETF structure, retail investors generally sell in market transactions. The available quote and actual execution determine the sale price; NAV alone does not guarantee it.
Does buying below NAV guarantee a profit?
No. A discount describes a market price below the stated NAV reference. It does not promise convergence, stop the portfolio's value from falling or account for transaction costs. In our example, −2% is a reference comparison, not a forecast of a 2% gain.
Can I compare yesterday's NAV with today's market price?
You can make that comparison if you label the two times clearly. It is not evidence of a same-time mispricing. Check the NAV's valuation date and the market price's timestamp and quote type before interpreting the difference.
Can every ETF investor redeem one share at NAV?
Not generally in the US structure described here. Direct creation and redemption typically involve authorized participants and large blocks, while retail investors trade shares on an exchange. The actual fund terms and structure matter; this is not a rule for every exchange-traded product worldwide.
Is the NAV premium the same as the bid-ask spread?
No. A NAV premium compares a specified market price with NAV per share, using NAV as its denominator. The bid-ask spread is the difference between the buying and selling quotes. Neither figure, by itself, gives your total cost or investment return.
Explore HypaForecast pages
Browse the publisher's market list and BTC 5-minute and 15-minute pages. These general navigation links are separate from the fictional ETF pricing example.
Sources and scope
The SEC investor bulletin dated 23 February 2023 was checked on 20 October 2026. Its scope is US ETFs registered as open-end investment companies or unit investment trusts under the Investment Company Act of 1940. The asset, liability, share-count and price examples are original and fictional; their matched-time assumptions are stated in the text. No current fund prices, prospectus-specific terms or source-image formulas are used.
HypaForecast publishes educational guides and operates a prediction market. This article does not establish an ETF offering, an arbitrage opportunity or your eligibility to use a service.
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