ROE¶
function
frds.measures.corporate.
roe
(
data
, use_lagged_ceq=False
)
ROE
Income before extraordinary items scaled by common equity
ROE_{i,t} = \frac{IB_{i,t}}{CEQ_{i,t}}
where IB and CEQ are from Compustat Fundamentals Annual WRDS.COMP.FUNDA
.
If data
is a Fundamentals Quarterly dataset:
ROE_{i,t} = \frac{IBQ_{i,t}}{CEQQ_{i,t}}
Parameters
data
(Union[Funda, Fundq]) — Input datasetuse_lagged_ceq
(bool, optional) — Use lagged common equity. Defaults to False.
Returns (Union[pd.Series, None])
ROE
Examples
>>> from frds.data.wrds.comp import Funda
>>> from frds.io.wrds import load
>>> from frds.measures.corporate import roe
>>> FUNDA = load(Funda)
>>> roe(FUNDA)
GVKEY DATADATE
001000 1961-12-31 NaN
1962-12-31 0.217391
1963-12-31 0.005425
1964-12-31 0.064250
1965-12-31 -0.401222
...
001004 1982-05-31 0.028876
1983-05-31 0.064662
1984-05-31 0.055337
1985-05-31 0.103805
1986-05-31 0.120632
Name: ROE, Length: 100, dtype: float64
See Also
- ROA - Return on assets
Last update: June 3, 2021
Created: July 27, 2020
Created: July 27, 2020