Where prime is the top 5% of a market, super-prime is the top 1% and ultra-prime the handful of trophy assets above it. These tiers behave differently from the mainstream: thinner supply, longer time-on-market, and pricing set by scarcity rather than comparables.
Glossary
Super-prime & ultra-prime
The top tiers of a market by value — typically the top 1% (super-prime) and the rarest 0.1% (ultra-prime).