FF.norm.ownership function

Create a normalised-valued firm-firm (FF) matrix for common ownership

Function to create a normalised-valued firm-firm (FF) matrix based on common ownership

FF.norm.ownership(
  ...,
  id_as_firm_name = NULL,
  Matrix = NULL,
  self_ties = FALSE
)

Arguments

• ...: Either multiple objects of class firm or a list of such objects
• id_as_firm_name: Whether to use the ticker as the firm's name. Defaults to TRUE if all firms' id is neither NULL nor NA.
• Matrix: Whether to use the c("list("Matrix")", " package"). Defaults to TRUE when any matrix in the pipeline contains more than 10,000 cells and the package is installed.
• self_ties: Whether to allow self-ties (a 'loop' in graph theory). Defaults to FALSE.

Returns

A matrix object of class financial_matrix(possibly using the c("list("Matrix")", " package"))

Details

Normalised-valued means that weights represent the share of common managers.

Examples

# Create the normalised FF matrix of Berkshire Hathaway's holdings by common ownership
data('firms_BKB')
FF <- FF.norm.ownership(firms_BKB)

See Also

Other Financial_matrix builders: FF(), FF.binary.both(), FF.binary.management(), FF.binary.ownership(), FF.naive.both(), FF.naive.management(), FF.naive.ownership(), FF.norm.both(), FF.norm.management()

Author(s)