UPDATED - 18/04/2019
Below we have our table of most and least correlated tokens for each token in the top 30, based on market capitalisation.
Calculated over a 6 month period, using daily close-close data, highly correlated pairs are always worth keeping an eye on as they can help to spot a move before it happens should one leg of the pair move out of line.
We update this regularly, so be sure to check back, or visit us a cryptomarketstats.io