Measuring Liquidity Across Commodity Futures Contracts
Summary
The document discusses how to assess liquidity in commodity futures, noting that stock-market measures such as volume and the Amivest ratio may not transfer directly to every contract. Suggested indicators include trading volume, bid–ask spreads, order-book depth, quote age, and trade frequency. Average daily volume over a recent window is offered as a practical comparison measure.
Liquidity depends on the specific delivery period and contract: for example, a daily-delivery contract may trade actively only near expiration. A recent volume average can therefore be supplemented with constraints such as requiring a minimum number of days to meet a trade-count threshold. The appropriate observation window depends on the intended use, and a single measure or frequency is not presented as universally valid.
Key ideas
- Assess futures liquidity with volume, bid–ask spread, order-book depth, quote age, and trade frequency.
- Average daily volume over a recent window is a practical starting point for comparisons.
- Liquidity can vary by delivery period and may concentrate near a contract’s expiration.
- A minimum number of sufficiently active trading days can supplement volume averages.
- Choose the measurement window according to the liquidity question being asked.
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Full text
# Liquidity measures for Commodities Futures # Liquidity measures for Commodities Futures I would like to find a way to measure Liquidity for Commodities Futures. I found the following 4 papers/definitions: - Volume (Share / Dollar) (Dollar Volume Liquidity) - Amivest Liquidity Ratio (Comparison of Liquidity Measures in the Stock Markets) - (Commodities Liquidity Measurement and Transaction Costs) The first 3 only refer to Stocks. Are the above measures applicable both to Stocks and to Commodities? Can they be applied to Future Contracts? Would they be equally valid on daily basis vs a monthly or yearly basis? ## Answer by ThatDataGuy (score 1) https://quant.stackexchange.com/a/64207 The usual measures are trade volumes (from all sources of trades / order books), bid/offer spread, order book depth, quote ages, trade frequency, etc. For quick comparisons, average daily volume is the best (and easy to obtain). ## Answer by Andrea Di Iura (score 1) https://quant.stackexchange.com/a/69353 As stated by user42108 in his comment, there are many different contracts for a given commodity. As an example for the energy market, you can have monthly/quarterly or even daily futures (for instance, power at EEX). Thus a product with a daily delivery can be liquid only nearly the contract expires. Therefore, you can define the liquidity using the average daily volume in a recent time window as suggested by this answer adding some additional constraints/penalty, such as a minimum number of days with at least $N$ trades. Nevertheless, the time window needed to compute the average volume is strongly dependent on your needs.
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