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0
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1answer
26 views

Variability of IVs of OTM options

I'm attempting to fit a curve through moneyness/IV datapoints of intra-day options. As you can see, the data gets sparser and more variable for highly OTM options. I'd like to argue why the outliers ...
0
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0answers
31 views

Outlier detection via TSO and errors help [duplicate]

I'm trying to detect outliers within a financial time series which represents the ratio of cash distributions to equity holders as a percentage operating earnings for the period. Visual inspection ...
1
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0answers
45 views

Outlier removal, issue with TSO function

I'm trying to detect outliers within a financial time series which represents the ratio of cash distributions to equity holders as a percentage operating earnings for the period. Visual inspection ...
1
vote
1answer
55 views

Events effect on intraday volatility and large outliers

I have an event that takes place over a period of a few days, and I want to estimate the effect it has on market volatility using intraday data with one minute frequency. The problem is, that e.g. ...
7
votes
0answers
97 views

Is Least Median Squares (LMS) regression commonly used in Finance?

Least Median Squares is often argued to give more stable results than does OLS. Whereas in OLS one minimises the mean of squared residuals, in LMS, one instead minimises the median of squared ...
4
votes
2answers
913 views

How to remove outliers in financial times series?

I have a bunch of time series; i need to clean them before modelling. So far I just know the “filtering/smoothing” method : -Ex: moving average methodology (filter the data with a moving average (...
0
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0answers
402 views

what is a reasonable beta in CAPM?

I want to predict expected returns for assets using a CAPM, to calculate unexpected (unpredictable, idiosyncratic, non-systemic) returns in portfolios. My CAPM estimated on monthly total gross ...
2
votes
3answers
357 views

Smoothing Term Curve

Assume that we have current month term curve and the curves from the two previous months. The current curve may be shifted from the average of the previous two curve by some value (a parallel shift). ...