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Dec 28, 2023 at 8:42 comment added Con Fluentsy You are not right.
Dec 28, 2023 at 8:39 history edited Con Fluentsy CC BY-SA 4.0
added 44 characters in body
Nov 14, 2020 at 20:36 comment added user42108 "In finance it is difficult to distinguish mean returns (drift) from variance and estimates of the mean return are notoriously noisy especially for small samples. So we generally set the mean return to zero." - Euan Sinclair, Volatility Trading. If you want to include the mean, feel free, but it is not standard practice to do so if you're looking at realized vol.
Nov 13, 2020 at 13:58 comment added user42108 Your first equation seems to be missing a square root, and in general people do not use the mean in estimating vol.
Nov 13, 2020 at 9:10 vote accept mbz0
Nov 11, 2020 at 21:59 history answered Con Fluentsy CC BY-SA 4.0