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Assume that stock market returns do follow a single-index structure. An investment fund analyzes 750 stocks in order to construct a mean-variance efficient portfolio constrained by 750 investments. They will need to calculate ________ estimates of firm-specific variances and ________ estimate/estimate(s) for the variance of the macroeconomic factor.
Role Confusion
A situation in which an individual or member of a group is unsure about the expectations for their behavior within a given context or social position, often leading to stress and uncertainty.
Centralized Communication
A communication structure in which all messages and decisions flow through a central point or authority, minimizing direct communication between other members.
Circle
A simple geometric shape consisting of all points in a plane that are at a constant distance from a fixed central point.
Wheel
A circular component that is intended to rotate on an axle and is used in various machines and vehicles for transportation or moving objects.
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