Stock indices and risk appetite
The S&P 500 and Nasdaq 100 are indices that sum up the overall direction of the US stock market, and they are widely used to read the market's risk appetite. Crypto sometimes moves together with them, especially around the US session open and close. The relationship changes over time and is not one of cause and effect.
What do stock indices tell you?
A stock index combines the share prices of a group of companies into a single number. The S&P 500 tracks about 500 large US companies, weighted by market value, and is seen as the broad gauge of the US stock market. The Nasdaq 100 covers the 100 largest non-financial companies listed on the Nasdaq exchange, with a heavy weighting in technology.
Risk appetite is a loose term for how willing investors are to hold more volatile assets. When indices rise broadly, risk appetite is said to be strong; when they fall sharply, weak. Crypto is a volatile asset class too, so it can be affected by this general mood.
How to read risk appetite
- The direction of the indices and the breadth of the move. A rise carried by a handful of large companies reads differently from a broad one.
- The gap between the Nasdaq 100 and the S&P 500. Periods when the tech-heavy index is stronger are often read as periods of high risk appetite.
- Sharp, fast index declines. On such days there can be a general move out of volatile assets, and crypto can be caught up in it.
- Reading them together with the dollar and rates. Whatever moves the indices often moves the dollar and bond yields at the same time.
US market hours and 24/7 crypto
The regular US stock market session runs from 09:30 to 16:00 New York time. During US daylight saving time that is 13:30–20:00 UTC; in winter it is 14:30–21:00 UTC. Index futures trade almost around the clock on weekdays, but much of the volume and movement is concentrated in the regular session.
Crypto trades 24/7. So crypto charts often show volume and volatility picking up around the open and close of the US session. At weekends the stock market is closed; crypto keeps trading, but there is no influence from the indices and liquidity is often thinner.
Correlation: a relationship that changes
Correlation measures how far two prices moved together over a given period. The correlation between crypto and stock indices is not fixed: in some periods they move together clearly, in others the link weakens or disappears altogether. Which period and which timeframe you measure changes the result.
Moving together does not mean one moves the other. A common driver such as rate expectations, the dollar or overall liquidity can affect both at once. Concluding that crypto will rise because the index is rising reads more into the relationship than it holds.
Same day, three pictures
When the US session opens, crypto and the indices can show different pictures.
Rising together
The indices rise broadly and crypto moves up in the same hours. There may be a shared mood of risk appetite.
Falling together
The indices fall sharply and crypto is under pressure in the same hours. There may be a general move out of volatile assets.
Diverging
The indices go one way while crypto moves differently on its own news or its own structure. The link is not decisive that day.
What it shows, what it does not prove
What it shows
- The direction of general risk appetite in the stock market that day
- Whether a crypto move lines up in time with US session hours
- How strong the link between crypto and the indices has been over a given period
What it does not prove
- That the indices move crypto; a common driver can affect both
- That a correlation seen in the past will continue
- That crypto will rise when the indices rise, or the reverse
The MarketLevelMap view
How it relates to zones
Because volatility picks up around the US session open, price can move quickly into and out of a support or resistance zone. The first move in these hours often leaves long wicks. Reading the zone as a band and looking at the close of the 1H or 4H candle helps avoid mistaking the first reaction for a lasting breakout.
A move that reaches a zone in thin weekend liquidity can meet a different reaction once the weekday sessions begin. The general mood in the indices helps put a reaction at a zone in context; it does not replace the zone.
For general information only. Not investment advice.Last updated: