Value-Growth Dispersion is derived directly from the Value-Growth Dispersion Metric as follows.
LOW: Value-Growth Dispersion Metric is less than 80
MEDIUM: Value-Growth Dispersion Metric is between 80 and 123
HIGH: Value-Growth Dispersion Metric is greater than 123
The breakpoints of 80 and 123 are static following a 20-60-20 rule. That is, roughly 60% of portfolios will be labeled as Medium, and 20% each as Low and High.