Risk-based allocation# Portfolios built from risk alone: tail risk, diversification and equal risk contributions. Rockafellar-Uryasev CVaR optimization Rockafellar-Uryasev CVaR optimization Choueifaty’s most-diversified portfolio Choueifaty's most-diversified portfolio Maillard-Roncalli-Teiletche risk parity Maillard-Roncalli-Teiletche risk parity Lopez de Prado’s hierarchical risk parity Lopez de Prado's hierarchical risk parity