13 Nov 2026
How Do Trading Halts, Market Volatility and Circuit Breakers Affect ETFs?
ETFs trade on stock exchanges, so they are subject to the same mechanisms that pause trading during extreme market moves. Market-wide circuit breakers halt trading across all U.S. stocks and ETFs when the S&P 500 falls sharply, and single-security pauses, known as limit up-limit down, halt trading in an individual stock or ETF when its price moves outside a set band. Understanding these rules, and how ETF prices behave during volatile markets, helps investors avoid poorly priced trades.
How do market-wide circuit breakers work?
Market-wide circuit breakers are based on declines in the S&P 500 index from the prior day’s close. There are three levels: a 7% decline (Level 1), a 13% decline (Level 2) and a 20% decline (Level 3).1
Level 1 and Level 2. If the decline occurs before 3:25 p.m. Eastern time, trading halts across U.S. equity markets for 15 minutes. At or after 3:25 p.m., these levels do not halt trading.
Level 3. A 20% decline at any time halts trading for the rest of the day.
Each level can be triggered only once per day.1 Circuit breakers apply only to declines, not to rises.
How do single-security pauses work?
The limit up-limit down mechanism applies to individual stocks and ETFs. It sets price bands around a reference price based on recent trading. If a security’s price moves outside its band and does not return within a short period, trading in that security pauses, typically for five minutes. Band widths depend on the security’s price and tier and are wider near the market open and close.2
These pauses are designed to prevent trades at prices far from recent levels during sudden moves. They can occur in any individual stock or ETF, in either direction, and multiple times a day.
What happens to ETFs during volatile markets?
During normal markets, creation and redemption keeps ETF prices close to the value of their holdings. During sharp sell-offs, several things can happen:
Wider spreads. Market makers widen quotes when prices are uncertain or the underlying securities are hard to value or trade. Our article on ETF bid-ask spreads explains spreads.
Larger premiums or discounts. If underlying securities are halted, delayed or illiquid, it becomes harder to price the ETF, and its market price can deviate further from its net asset value.
Pauses in the ETF itself. An ETF can be paused under limit up-limit down rules even when its underlying holdings are trading, or because they are paused.
On August 24, 2015, many ETFs experienced limit up-limit down pauses during a volatile market open. An SEC staff analysis found that an ETF’s correlation with the S&P 500 was a strong predictor of those pauses, and that ETFs with higher turnover relative to their size were less likely to be paused.3 Rules and practices around the market open have since been revised.
Why can ETF prices move faster than their holdings’ reported values?
In stressed markets, an ETF’s market price often reflects current conditions more quickly than its net asset value, especially for funds holding bonds, international securities or less liquid assets whose prices update slowly. A discount in such cases may indicate that the ETF price is closer to what the holdings could actually be sold for. Our article on bond ETFs discusses this for fixed income.
How can investors trade carefully during volatility?
Use limit orders. Market orders and stop orders can execute at prices far from expectations when markets move quickly or spreads widen. Stop orders become market orders once triggered and can execute well below the stop price in a sharp decline. Our article on how to buy an ETF explains order types.
Avoid the open and close. Spreads are typically wider in the first minutes after the open and can widen near the close, especially on volatile days.
Check the indicative value. Many platforms display an intraday estimate of the value of an ETF’s holdings, which can help gauge whether the market price is reasonable.
Be patient. Unless a trade is urgent, waiting for conditions to settle can reduce costs.
Know what you own. Understanding the liquidity of a fund’s holdings helps set expectations for how it may trade in stress.
What happens to orders during a halt?
When trading is halted or paused, new trades cannot execute in the affected securities. Orders entered before or during a halt may remain open, depending on the order type and broker, and can execute when trading resumes. When trading restarts, prices can open at levels quite different from where they stood before the halt, as buyers and sellers react to new information. Limit orders help control the price at which orders fill once trading resumes, while market and stop orders can fill at unexpected prices. Investors can review their open orders during a halt and cancel or adjust them as needed. Brokers’ policies on handling orders during halts vary and are described in their account disclosures.
Do halts affect long-term investors?
For long-term investors who do not need to trade during volatile moments, halts and pauses usually have little lasting effect. Their purpose is to slow trading, allow information to be absorbed and reduce the chance of disorderly pricing. The more important point is to avoid placing orders that could execute at unfavorable prices during these periods. More introductory topics are covered in our ETF basics guide.
Investments involve risk, including possible loss of principal.
Frequently asked questions
What triggers a market-wide circuit breaker?
A decline in the S&P 500 of 7%, 13% or 20% from the prior day’s close. Level 1 and Level 2 declines halt trading for 15 minutes if they occur before 3:25 p.m. Eastern time. A Level 3 decline halts trading for the rest of the day.
What is a limit up-limit down pause?
It is a brief trading pause in an individual stock or ETF, typically five minutes, triggered when the price moves outside a band around a recent reference price. It applies to both rising and falling prices and can occur several times a day.
Can an ETF be halted while the stock market is open?
Yes. An individual ETF can be paused under limit up-limit down rules if its price moves sharply, even while the broader market continues trading. Exchanges can also halt individual securities for other regulatory reasons. Halts are announced by the listing exchange.
Should I use stop-loss orders on ETFs?
Stop orders become market orders once triggered, so in a sharp move they can execute well below the stop price. Some investors use stop-limit orders instead, which add price control but may not execute. Understanding how each order type behaves in volatile markets is important.
Why did my ETF trade far below its NAV during a sell-off?
During stress, spreads widen and the prices used to calculate net asset value may lag current conditions, particularly for less liquid holdings. The ETF price may reflect where the holdings could actually trade. Gaps typically narrow as markets stabilize and creation and redemption resume normally.
Have market-wide circuit breakers been triggered before?
Yes. Level 1 circuit breakers were triggered several times in March 2020 during the sharp market decline at the start of the pandemic, halting trading for 15 minutes each time. The rules are designed to give markets time to absorb information during extreme declines.
- Cboe Global Markets, “U.S. Market-Wide Circuit Breaker FAQ”; U.S. Securities and Exchange Commission, Investor.gov, “Stock Market Circuit Breakers”; Level 1 halts on March 9, 12, 16 and 18, 2020, as reported in market coverage.
- U.S. Securities and Exchange Commission, Investor.gov, “Measures to Address Market Volatility”; Limit Up-Limit Down Plan.
- Austin Gerig and Keegan Murphy, “The Determinants of ETF Trading Pauses on August 24th, 2015,” SEC Division of Economic and Risk Analysis white paper (February 2016).
Cite this page: Adam Patti, "How Do Trading Halts, Market Volatility and Circuit Breakers Affect ETFs?," VistaShares, updated November 13, 2026, https://www.vistashares.com/etf-trading-halts-and-circuit-breakers/. Plain-text version.
This material is provided for educational purposes only. It is not investment, legal or tax advice, and it is not a recommendation or an offer to buy or sell any security. Information is drawn from sources believed to be reliable as of the date of publication, is not guaranteed as to accuracy or completeness, and may change without notice. Figures attributed to third parties are their estimates. Projections and forecasts are not guarantees of future results. Investors should consult their own financial, legal and tax professionals before making investment decisions. Investments involve risk, including possible loss of principal. ETF shares are bought and sold at market price, which may differ from net asset value, and brokerage commissions and other trading costs may apply.