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Understanding Risk: Volatility, Drawdown and Permanent Loss

Three different things that all get called 'risk', why they are not interchangeable, and why risk oversight is kept separate from the people making investment decisions.

Category
Risk Management
Level
Beginner
Duration
20 min

"Risk" is used to mean several different things in investing, and the confusion causes real mistakes. Three of the most common meanings describe genuinely different phenomena.

Volatility

Volatility measures how much a price moves around, in either direction, over a period. It is the easiest risk to calculate and the most commonly quoted.

Its limitation is that it treats a sharp rise and a sharp fall as the same thing. It also assumes that past price movement is a fair guide to the range of future movement — an assumption that tends to fail precisely when it matters most.

Drawdown

Drawdown measures the decline from a previous peak to the following trough. Maximum drawdown is the largest such decline over a period.

Drawdown is usually what investors actually mean when they talk about risk, because it describes something they will experience: not a statistical property, but a period of months or years in which their capital is worth less than it was, and they do not know when that will end.

Two things about drawdown are worth holding onto:

  • It is measured peak to trough, so a portfolio that falls 20% and recovers has still had a 20% drawdown.
  • It is only known after the fact. Managing it is a matter of controlling exposures beforehand, not predicting the number.

Permanent loss

Permanent loss is capital that does not come back. It arises from things that are structurally different from price movement:

  • A company that fails.
  • A bond issuer that defaults.
  • A position liquidated at the worst moment because it had to be sold — by a margin call, a redemption, or a forced deleveraging.
  • Fraud, or a custodian failure.

Volatility and drawdown are uncomfortable. Permanent loss is final. The distinction matters because the tools differ: volatility is managed through diversification and position sizing, while permanent loss is managed through credit analysis, custody arrangements, liquidity planning, and avoiding leverage that can force a sale.

Liquidity, concentration and leverage

Three specific exposures deserve naming, because they convert ordinary drawdowns into permanent ones:

  • Liquidity risk — holding an asset that cannot be sold, at a fair price, when the money is needed. Liquidity is abundant in calm markets and scarce in stressed ones, which is exactly when it is needed.
  • Concentration risk — a single position, sector, or counterparty large enough that its failure decides the outcome.
  • Leverage — borrowing to increase exposure. It multiplies gains and losses alike, and it introduces the possibility of a forced sale at the bottom.

Why independent risk oversight exists

A person who has chosen an investment is not well placed to judge it impartially. This is not a comment on their competence; it is how judgement works. The case for a position is built by the same mind that must later decide whether to abandon it.

That is why professional asset management separates the two functions. At Eonvera, independent risk management provides oversight of market risk, portfolio concentration, leverage, liquidity, counterparty exposure, and stress testing, with defined reporting lines and escalation procedures for material issues — distinct from the investment team that originates the positions.

The point is not to prevent risk. Investing without risk is not investing. The point is to make sure the risk taken is chosen, understood, and sized deliberately rather than discovered afterwards.