More holdings do not always mean more variety

A list can be long and still repeat the same underlying bet. Several funds may own many of the same large companies; businesses in different industries may all depend on one commodity, country or interest-rate climate. Diversification concerns exposures moving differently, not simply the number of labels on a statement.

Regulators describe diversification as spreading money among investments to reduce risk, while stressing that it cannot prevent every loss. The correction is modest: counting containers is not the same as inspecting contents. Whether a collection is genuinely varied depends on what sits inside and how those parts may respond together.