Log return
The natural logarithm of one price divided by the one before it.
Formula
Log return = ln(Pₜ ÷ Pₜ₋₁)
How to read it
Close to the simple return for small moves, smaller for large gains and larger for large losses. Spearman's and Kendall's figures are identical on either kind; only Pearson's can differ.
Also called: log return, log returns.