
The consumer price index, CPI, is one of the few macro numbers that make the crypto market freeze. On release day, bitcoin can move more in minutes than in the entire previous day.
We have covered the overall macro calendar separately. Here we go deeper into one number: what exactly the market looks at in CPI and what happens to spreads in those minutes.
CPI (Consumer Price Index) shows how prices change for a basket of goods and services bought by urban consumers in the US. It is calculated once a month by the Bureau of Labor Statistics (BLS).
Core CPI is the same index excluding food and energy. These categories swing a lot from month to month, and without them underlying inflation is easier to see.
The report has four key numbers: the headline and core index, each as a month-over-month and year-over-year change.
Indicator | What it includes | How to read it |
Headline CPI, m/m | the whole basket over a month | the current pace, noisy because of energy |
Headline CPI, y/y | the whole basket over 12 months | the number for the headlines |
Core CPI, m/m | excluding food and energy over a month | the main guide for the market |
Core CPI, y/y | excluding food and energy over 12 months | underlying inflation |
In our view, the market reacts most strongly to monthly core CPI. It shows where inflation is heading right now, while the annual figure carries a lot of the past with it.
The BLS publishes CPI at 8:30 New York time, usually in the first half of the following month. The October 2026 report comes out on November 10.
It is easy to get confused by the clock change. Winter time has been in effect in the US since November 1, the difference with Moscow is now 8 hours, and CPI comes out at 16:30 Moscow time.
In summer the difference is 7 hours. The same release then falls at 15:30 Moscow time.
The market trades not the number itself but its deviation from the analysts' consensus forecast. If inflation matches expectations, the move often fades within a few minutes.
The logic is simple. Inflation above the forecast raises the chance of tighter Fed policy, the dollar and yields rise, and risk assets get cheaper. Below the forecast, the opposite happens.
There are also mixed results: the headline index above the forecast and core below it. Then the first candle often goes one way and reverses within a quarter of an hour.
Scenario | Typical first reaction of bitcoin | What happens to spreads and funding |
Core CPI above the forecast | a sharp drop | spreads widen, funding dips |
Core CPI below the forecast | a rally | spreads widen, funding rises |
In line with the forecast | a brief spike that fades | spreads converge quickly |
Mixed result | jerks in both directions | false spreads, funding imbalances |
We believe this table is useful as a guide, not a rule. If the market was afraid of high inflation in advance, even a number slightly above the forecast can trigger a rally as the fear lifts.
A minute or two before the release, market makers widen their quotes and pull some of their orders. Order books thin out, and the visible price rests on thin volume.
In the first seconds after the number comes out, exchanges do not move in sync. On some the price updates faster, on others orders fill with slippage, and gaps open between venues.
Most of these gaps close within seconds. Some cannot be executed at all: the best price only has a hundred dollars of volume behind it.
Funding on perps reacts more slowly. The rate depends on the perp's premium to the index, and after a sharp move it diverges across exchanges more than usual.
From what we see, the most interesting hours for arbitrage are not the first minutes but the next hour or two. The price calms down, while funding and basis imbalances between exchanges still persist.
The example is hypothetical; the numbers are rounded and taken for illustration.
Before the release, bitcoin trades at about $75,000 on two exchanges. Core CPI comes out above the forecast, and within a minute the price on exchange A drops to 74,200, and on exchange B to 74,500.
The difference is $300, or about 0.4%. The arbitrageur buys 0.1 BTC on A and sells 0.1 BTC on B, expecting prices to converge.
The gross difference is $30. Four trades at a 0.05% taker fee take about 15, and slippage in a thin order book can easily add another 10-15.
In the end a few dollars are left, and if one leg is filled badly, a loss. In the first minute the spread looks generous, but the result is decided by order book volume and speed.
The next test of the checklist is November 10 at 16:30 Moscow time. It is calmer to enter trades once order books have recovered, not in the first minute.
In the minutes around a CPI release, exchanges update prices at different speeds, and a gap only becomes visible when you compare all the venues at the same time. Our arbitrage screener keeps dozens of venues in one window, refreshes quotes every second and shows each gap together with the volume actually behind it. The spread calculator helps you check what survives fees, network costs and slippage at your size. The bot is fully manual. It never connects to your exchange API keys.
To test the tools on a live market, ArbitrageScanner offers one day of free access to the whole ecosystem.
1. What time is CPI released in Moscow time?
At 8:30 New York time, which is 16:30 Moscow time in winter and 15:30 in summer. The October 2026 report comes out on November 10.
2. How does core CPI differ from the regular index?
Core CPI excludes food and energy. It is less noisy and better reflects underlying inflation.
3. Why does bitcoin fall when inflation is high?
High inflation raises the chance of tighter Fed policy. The dollar and yields rise, and risk assets, including bitcoin, get cheaper.
4. Can you profit from arbitrage during a CPI release?
Spreads open more often in those minutes, but they last seconds and often rest on thin volume. After fees and slippage, the result can turn out negative.
5. How does funding change after CPI?
It reacts more slowly than the price and, after a sharp move, diverges across exchanges. Such imbalances usually last longer than price spreads.
CPI comes out at 8:30 New York time, which is currently 16:30 Moscow time. The market looks first and foremost at the monthly core index and its deviation from the forecast, not at the number itself.
For an arbitrageur, the first minutes after CPI are a time of ragged order books and short-lived spreads. A margin buffer, capital pre-positioned on exchanges and volume checks help get through the release calmly, and funding imbalances are worth looking for an hour or two later.
IMPORTANT! We are software developers. We do not give recommendations or promises of earnings and we do not advise you to invest your money anywhere. Our software is fully manual, all your money stays under your own control. We show examples of how our clients have earned on arbitrage in the past, but we do not advise repeating those actions one to one. Your earnings depend solely on your own actions and on market factors.
Get a subscription and access the best tool on the market for arbitrage on Spot, Futures, CEX, and DEX exchanges.
