Modern Portfolio Theory is a single-period model developed for the efficient securities market, in which asset prices are implicitly assumed to follow a random walk. It is widely agreed that real estate does not fit into the efficient market paradigm; however, mixed-asset portfolio analysis...

Thinly-traded assets exhibit illiquidity and do not fit in the efficient market paradigm. Direct application of classical finance theories to illiquid assets simply ignores the illiquidity risk of thinly-traded assets. Using commercial real estate as a testing ground, this paper develops a new,...