On the second Tuesday of most months, the Nasdaq futures contract can travel a hundred points in ninety seconds. On the third Monday, the same ninety seconds might not produce ten. Nothing about the chart tells you which day you are on. The calendar does.
An economic calendar is the schedule of when the US government publishes numbers that reprice risk. For an index futures trader it is the difference between a market that moves and a market that drifts.
Each entry is a scheduled data release, and a useful calendar shows four things: the exact time, the agency publishing it, the consensus forecast, and the previous reading. Afterward it shows the actual number, and often a sixth field people ignore, the revision to the prior month.
Two properties make these events tradable. They are scheduled, so nobody guesses when new information arrives. And they are simultaneous, released to everyone at the same instant, so the repricing happens in one burst instead of leaking out over an afternoon.
The calendar does not tell you which way the market will go. It tells you when it is most likely to move at all. That is a schedule of volatility, not a schedule of direction, and confusing the two is how people end up guessing on CPI mornings.
Only a handful matter. Ranked by how reliably they move US index futures:
| Release | Publisher | Time (ET) | Why it moves the market |
|---|---|---|---|
| FOMC statement and press conference | Federal Reserve | 2:00 PM, 2:30 PM | The rate decision, then the explanation, which often matters more |
| Consumer Price Index (CPI) | Bureau of Labor Statistics | 8:30 AM | Inflation drives rate expectations, which drive everything |
| Employment situation (non-farm payrolls) | Bureau of Labor Statistics | 8:30 AM | The biggest scheduled monthly event for index futures |
| PCE price index | Bureau of Economic Analysis | 8:30 AM | The inflation gauge the Fed says it watches most |
| Producer Price Index, retail sales | BLS and Census Bureau | 8:30 AM | Inflation upstream, and the consumer who is most of the economy |
| Initial jobless claims | Department of Labor | 8:30 AM | The only weekly labor read, which keeps Thursdays lively |
| ISM surveys, consumer confidence, JOLTS | ISM, Conference Board, BLS | 10:00 AM | Second tier, but they land after the cash open |
Everything else is noise for this purpose. Building permits will not reprice the Nasdaq.
This is the part beginners get backwards. A strong jobs report does not mean futures go up, and a hot inflation print does not mean they go down. Markets trade the gap between what was expected and what arrived, nothing else.
If economists expected 180,000 jobs and the number is 178,000, almost nothing happens: that was already in the price. If the number is 40,000, the tape convulses, because thousands of positions were built on an assumption that just broke. The same release can be bullish one month and bearish the next, depending on where the consensus sat.
Two refinements. First, revisions: payrolls routinely rewrite the two prior months, and a large downward revision can overwhelm a good headline. Second, the first move is often not the move. The initial spike is machine reaction to the headline, and the considered move arrives minutes later once the details are read. What that looks like is in what moves the Nasdaq at the open.
Look at the table and notice the pile-up. US statistical agencies deliberately publish market-moving data at 8:30 AM Eastern, an hour before the cash market opens, so it reaches everyone at once instead of landing mid-session.
That produces a repeatable moment: a thin pre-open book, a scheduled information shock, then a burst of volume as positions adjust. It is the most information-dense minute of the American trading day, and it lands at the same time every day it lands at all. The long version is in the 8:30 data window and the 9:30 open, and the session structure around it in futures market hours and sessions.
Each Algomyth engine works its own market in its own moments, streamed live as it happens. The mechanics, the risk model and the full records are published rather than described.
Eight times a year the Federal Reserve publishes a policy statement at 2:00 PM ET, usually followed by a press conference at 2:30. These are the only scheduled events that reliably beat payrolls for movement, and they have a shape of their own: a reaction to the statement, then a second and often larger reaction while the chair is speaking, then a session that can reverse the whole thing by the close.
For a morning system it is a non-event, because the position closed hours earlier. For anyone trading discretionarily in the afternoon it is the most dangerous scheduled hour of the quarter. Respect it or stay flat through it. There is no third option that ends well.
A strategy does not read a calendar. It is built around one.
The stop and the target go into the market at the same instant as the entry, the Algomyth engine's target is three times the risk, and nothing is held overnight. Neither knows whether today is CPI or a quiet Wednesday, and neither forecasts the number. It responds to what the tape does at the open, with the risk defined first. How that logic is put together is in how a trading algorithm works.
The published Algomyth engine backtest covers January 2022 to September 2026 and 1,164 trades, all taken in the same window under the same conditions. A homogeneous sample like that says more about a system than the same number of trades scattered across twenty different market states.
Hypothetical performance. Those figures come from a backtest over historical data, not a live account. Simulated results are prepared with hindsight and cannot fully reflect real execution, slippage or liquidity. Past performance, real or simulated, does not guarantee future results.
Most of the value in a calendar is in what it stops you doing.
A day with nothing on the calendar is not a day off, it is a different market: less volume, tighter ranges, moves that fail more often. Discretionary traders force trades on those days because they are at the desk anyway. A system that takes one shot in one window has that problem removed by construction: the conditions appear or they do not, and there is no second attempt to talk yourself into.
The calendar is a volatility schedule. It never tells you which way.
Over a full year, FOMC decision days and the monthly employment situation report produce the largest and most reliable moves, with CPI close behind. The ranking shifts with what the market is worried about: in an inflation scare CPI dominates, and when the labor market is the concern payrolls does. All three are scheduled, which is what makes them usable.
Index futures trade nearly around the clock, while the cash equity market opens at 9:30 AM ET. Most US economic data is published at 8:30 AM ET, an hour earlier, so futures are the only place new information can be expressed when it arrives. That is why the reaction happens in futures first and the stock market often opens where futures already went.
It depends on whether your method is built for them. Holding a position into a release you did not plan for is a coin flip with a wider spread. Trading with a stop and target defined in advance, in a window you chose ahead of time, is a different activity: the systems sold here wait for the 9:30 cash open rather than taking a position on the 8:30 number. Some funded accounts restrict news trading, so check your contract.
They are surveys of economists compiled by financial data providers, so they are estimates rather than official figures. They matter because the market prices in the expectation ahead of time, and the reaction depends on the gap between the survey and the actual print. Providers publish slightly different consensus numbers, which is one reason the first seconds after a release are chaotic.
Not necessarily. Neither Algomyth system reads a calendar or forecasts releases; both operate from the cash open, an hour after the data is published, and react to what price does, with the risk defined before entry. Some traders add filters to skip event days, which is a legitimate design choice and one more parameter to fit and justify out of sample. The simpler approach keeps the rules constant across every kind of morning.
Everything we write comes back to one idea: verify, then decide. The live terminal exists for exactly that.
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