ROA¶
function
frds.measures.corporate.
roa
(
data
, use_lagged_total_asset=False
)
ROA
Income before extraordinary items scaled by total assets
ROA_{i,t} = \frac{IB_{i,t}}{AT_{i,t}}
where IB and AT are from Compustat Fundamentals Annual WRDS.COMP.FUNDA
.
If data
is a Fundamentals Quarterly dataset:
ROA_{i,t} = \frac{IBQ_{i,t}}{ATQ_{i,t}}
Parameters
data
(Union[Funda, Fundq]) — Input datasetuse_lagged_total_asset
(bool, optional) — Use lagged total assets. Defaults to False.
Returns (Union[pd.Series, None])
ROA
Examples
>>> from frds.data.wrds.comp import Funda
>>> from frds.io.wrds import load
>>> from frds.measures.corporate import roa
>>> FUNDA = load(Funda)
>>> roa(FUNDA)
GVKEY DATADATE
001000 1961-12-31 NaN
1962-12-31 NaN
1963-12-31 NaN
1964-12-31 0.027542
1965-12-31 -0.085281
...
001004 1982-05-31 0.010778
1983-05-31 0.025115
1984-05-31 0.032697
1985-05-31 0.058370
1986-05-31 0.058027
Name: ROA, Length: 100, dtype: float64
See Also
- ROE - Return on equity
Last update: June 3, 2021
Created: July 27, 2020
Created: July 27, 2020