The Wrong Kind of Diversification
Some kinds of diversification are better than others. Legendary investor Peter Lynch often referred to corporate ‘deworseification’ back in the conglomerate days when companies like ITT owned businesses as varied as hotels, insurance, defense contracting and for-profit education. One kind of diversification that Morningstar has popularized, but that I don’t think is particularly useful, is diversification by style box. As you can see in the image, Morningstar has cut the… Read More