Hi,
Can someone please help me understanding the following core reading about coherence of risk measures or statistics :
"Linear homogeneity" , it suggested that if the constant were to represent a bigger portfolio of risks then the linear homogeneity condition would not allow for any extra diversification benefits of writing a bigger book of business"
is that means if the portfolio is expanding by 50% , then the risk should by increased by 50% ?
if it is the case , is that counter intuitive as writing more risks clearly will increase the diversification benefit ? or is that means we can allow the diversification benefit via adjusting the volatility parameter eg decrease the CoV for attritional loss ?
thank you
Can someone please help me understanding the following core reading about coherence of risk measures or statistics :
"Linear homogeneity" , it suggested that if the constant were to represent a bigger portfolio of risks then the linear homogeneity condition would not allow for any extra diversification benefits of writing a bigger book of business"
is that means if the portfolio is expanding by 50% , then the risk should by increased by 50% ?
if it is the case , is that counter intuitive as writing more risks clearly will increase the diversification benefit ? or is that means we can allow the diversification benefit via adjusting the volatility parameter eg decrease the CoV for attritional loss ?
thank you