Traders build whole weeks around official US data. Jobs on Friday, inflation mid-month, retail sales and growth figures in between. So when the US government shuts down, it is not just museums and national parks that close. The statisticians stop working too, and markets suddenly lose some of the numbers they rely on to price interest rates.
Why shutdowns happen
US federal agencies need Congress to approve their funding. If lawmakers fail to pass spending bills or a temporary extension before the deadline, agencies without funding must stop non-essential work. Staff deemed non-essential are sent home until a deal is done.
Shutdowns have become a recurring feature of US politics. Most are short, but some drag on for weeks. The late 2025 shutdown lasted 43 days, the longest on record, and it showed just how disruptive a long closure can be for the data calendar.
Which data goes missing
The most important releases for markets come from agencies that close during a shutdown. The Bureau of Labor Statistics produces the monthly jobs report and the consumer price index. The Bureau of Economic Analysis publishes GDP and the personal consumption expenditures price index that the Federal Reserve targets. The Census Bureau handles retail sales, housing starts and trade figures.
When those agencies close, scheduled releases are postponed. In a short shutdown, they usually come out a few days or weeks late. In a long one, some surveys are never carried out at all. During the 2025 shutdown, some October figures could not be collected and were never published in the normal way, leaving permanent gaps.
Not everything stops. The weekly jobless claims figures are run through the states and have often continued. Data from the Federal Reserve, which funds itself, keeps flowing. Private surveys such as purchasing managers’ indices and payroll processor reports are unaffected.
Why the gap matters
The Federal Reserve describes itself as data dependent, meaning each decision depends on what the latest figures show. Without official jobs and inflation numbers, policymakers have less to go on, and so do traders trying to guess what the Fed will do. Our piece on how payrolls move the dollar and Fed odds shows how much weight one release can carry.
Less data can mean more uncertainty and, sometimes, bigger reactions when the delayed figures finally arrive. Several months of information can land in a short space of time, and the backlog can create unusually volatile days.
How traders work around it
Traders lean more heavily on private sources during a shutdown. Payroll company reports, purchasing managers’ surveys, credit card spending data, and regional Federal Reserve surveys all help fill the gap. The Fed’s own Beige Book of anecdotal reports becomes more important too.
Markets also watch the politics. Any sign of a deal in Congress can move bond yields and the dollar, because it brings the data, and clarity about Fed policy, back sooner.
Effects on markets
Historically, US shutdowns have not done lasting damage to share prices on their own. The economic hit is usually small and largely recovered once staff return and back pay is issued. A long closure can trim growth for a quarter, though, and hits confidence in the government’s ability to manage its finances.
The bigger market effect is often on volatility around delayed releases and on the reliability of figures for months afterwards. Missing surveys can distort year-on-year comparisons well after the government reopens.
The bottom line
A shutdown turns off some of the most important lights on the market’s dashboard. Traders cope by using private data and watching the politics, but the real risk is the bunching of delayed releases and the gaps they leave behind. Planning for that uncertainty is part of good risk management. If you want to test how well you prepare for data-heavy weeks, take the free Samuel & Co trader assessment.
