"We tend to think so," argues Jay Fishman, speaking at today's BVR Divorce Summit. But, if fact, "no one ever calls their broker and says 'I want to sell 100% of Ford'." Selling large blocks of public shares, as Ashok Abbot has shown, has many discounts built in--and is subject to oversight from PCAOB, FASB, and other regulators.
Compare this to a private company where today's lunch "may have included a quorum of the Board." Fishman's point: no matter what Thornhill says about discounts, not all private companies are harder to sell than public companies. Appraisers need to justify the circumstances that determine relative marketability challenges to determine any discount.