Aggregate businesses with similar drivers to create segments that are easy to forecast using simple models;
Separate reporting for business lines that tend to be lumpy (and thus harder to forecast) from business lines that tend to be predictable, so that the lumpy segments don’t hurt investors’ overall ability to forecast firm results;
Break out new businesses to give the market better insights into the related spending and associated potential returns, and to eliminate the need for investors to have to guess at these businesses’ results near-term.
Gizmos = AR1 (rho1=0.8, sigma1=1)
Widgets = AR1 (rho2=0.1, sigma2=1)
Firm A, which reports gizmos and widgets separately: b1 = 0.75, b2 = 0.12, R2=0.39
Firm B, which reports gizmos and widgets together in one segment: b = 0.56, R2=0.31
f1 = AR1 (rho1=0.8, sigma1=1)
f2 = AR1 (rho2=0.1, sigma2=1)
y1 = f1 + noise
z1 = f1 + noise
y2 = f2 + noise
z2 = f2 + noise
Segment1 = y1 + z1
Segment2 = y2 + z2
Segment1 = y1 + y2
Segment1 = z1 + z2
Firm A: b1 = 0.69, b2 =-0.02, R2=0.32
Firm B: b1 = 0.52, b2 = 0.41, R2=0.21
The Global Markets Institute is the research think tank within Goldman Sachs Global Investment Research. For other important disclosures, see the Disclosure Appendix.