Stock Correlation

Enter a stock, ETF, forex pair or cryptocurrency and the number of days, and the tool ranks every symbol of the same market by how closely its price moved with yours over that period: more than 20,000 US stocks and ETFs, the stocks of the same exchange outside the US, all currency pairs or all cryptocurrencies. Use this free tool to find stocks that move together, check how diversified your holdings are or spot candidates for pairs trading, no sign-up needed. To compare two symbols directly, use the Correlation Calculator.

A correlation close to +1 means two stocks have moved together, close to -1 that they have moved in opposite directions, and close to 0 that there has been no relationship. The top of the list therefore shows the stocks that behaved most like yours: often companies from the same industry, ETFs that hold the stock, or leveraged funds that track it. If several of your holdings rank near the top of each other's lists, your portfolio is less diversified than it looks. Correlation changes with market conditions, so compare a short period such as 30 days with a longer one such as 250 days before you draw conclusions.

Stock correlation measures how closely the prices of two stocks move together. It is expressed as a correlation coefficient between -1 and +1.

A value of +1 means the two prices moved in the same direction all the time, -1 that they always moved in opposite directions, and 0 that there was no relationship. Values above 0.7 are usually seen as a strong positive correlation and values below -0.7 as a strong negative one.

The coefficient is calculated from the daily closing prices of the two symbols over the number of days you choose, up to 450 days.

A symbol is compared with all the symbols of its market: a US stock or ETF with more than 20,000 US stocks and ETFs, a stock from another exchange with the stocks of that exchange, a forex pair with all currency pairs, and a cryptocurrency with all cryptocurrencies.

Stocks that are strongly correlated tend to rise and fall together, so holding several of them adds little diversification. Combining assets with a low or negative correlation can reduce the swings of a portfolio.

No. Correlation changes with market conditions, so a pair can be strongly correlated over 30 days and weakly correlated over a longer period. Compare several periods before you rely on it.

Use the Correlation Calculator: enter the two symbols and the number of days, and it shows their correlation coefficient.

Yes. The Stock Correlation tool and the Correlation Calculator are free, and you do not need to sign up. Enter any stock, ETF, forex pair or cryptocurrency.