The King of All Markets: Liquidity

Introduction

If financial markets are an ocean, then liquidity is the water. Although definitions of liquidity vary between the availability of cash and the cash itself, one thing is for certain; just as an ocean cannot exist without water, a market cannot function without liquidity. Meanwhile, the flow of liquidity between markets can make or break them. Furthermore, the liquidity of a particular asset, cryptocurrency for example, is an important indicator of their viability as well as an essential element of their tradability. Thus, in financial markets, liquidity truly is king!

Understanding Markets: Why Liquidity is King

Before jumping into its importance, let us define the concept. Liquidity, in its most fundamental sense, refers to the ease with which an asset can be bought or sold in the market. This tradability often correlates with the availability of the asset and is therefore conflated with the relative quantity of the asset itself. Accordingly, liquidity is discussed in relation to an individual or group allocating their funds to an opportunity in addition to the liquidity of an asset or market itself. Nevertheless, liquidity in both forms is critical, with its importance having been recognised by numerous economists and financial theorists throughout history. For instance, Nobel laureate Eugene Fama highlighted liquidity’s role in ensuring that asset prices fully reflect all available information, as stated in his Efficient Market Hypothesis.

The concept of liquidity is multifaceted, encompassing aspects such as market depth, immediacy, and tightness. Market depth refers to the exchange’s ability to handle large orders without significant price changes that occur following a trade, known as slippage. Immediacy is the speed at which orders can be executed. Finally, tightness refers to the spread between the bid (purchase) and ask (sale) prices. A market is considered highly liquid if it possesses depth, immediacy, and tight spreads in the order book, allowing for efficient price discovery and minimal transaction costs.

In the burgeoning world of decentralised finance (DeFi), liquidity takes on a newfound importance. Liquidity in these markets is often provided by liquidity providers (LPs) who pool their assets in

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Author: Laurie Dunn

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