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How to Use Value at Risk (VaR) to Manage Your Cryptocurrency Assets

The crypto market is known for its extreme volatility, where the price of cryptocurrencies can vigorously fluctuate within a short period of time. In a market full of uncertainty, managing risks is therefore crucial for any traders, only by analyzing the possible risks of investments can traders determine the extent and occurrence ratio of potential losses in their portfolios.

To evaluate portfolio risk, we can make use of different tools in the market to calculate the “worse-case scenario” in trading, such as Value at Risk (VaR).

Understanding Value at Risk (VaR)

Dubbed the “new science of risk management”, Value at Risk (VaR) is a statistic that measures and quantifies the level of financial risk within a firm, a portfolio or a position over a specific time frame. It can be applied to measure the risk exposure of specific positions or whole portfolios.

A VAR statistic has three components: a time period, a confidence level and a loss amount (or loss percentage). Let’s look at an example of using VaR to calculate risks.

BTC/USDT: VaR Calculation

We will focus on the minute closing price of BTC/USDT between Aug 15–21, 2019 on OKX. This calculation assumes that log-returns are normally distributed.

Step 1: Calculate the minute log-returns

Minute log-returns can be calculated based on the below formula:

Here we use the logarithm of returns instead of price returns. The benefits of using log-returns, versus prices, is log-normality: assuming the prices are distributed log normally, the log return is conveniently normally distributed, which is handy given much of classic statistics presumes normality.

We can then divide the log-returns into 27 intervals: (-14%, -13%), (-12%, -11%), …, (12%, 13%), count the number of minute returns for each interval and we get the following histogram:

Step 2: Calculate the average and standard deviation of log returns

We can then calculate the average and standard deviation of log-returns based on the formulas:

The average (µ) of 10,080-minute log-returns turns out to be 0.001083%, and the standard deviation (σ) is 0.03170.

Step 3: Calculate VaR based on confidence intervals of normal distribution

Assuming the returns are normally distributed, we can see where do the worst 5% and 1% lie on the normal curve. They show trader’s desired confidence, the standard deviation and the average from the below table:

The Verdict

There are two ways to understand the VaR calculation results:

  • With 95% and 99% confidence, we can expect that the worst loss will not exceed 5.23% and 7.38% respectively;
  • If we invest $10,000, we are 95% and 99% confident that our worst minute-loss will not exceed $523 (=$10,000 x -5.23%) and $738 (=$10,000 x -7.38%) respectively.

VaR is useful for calculating the maximum expected loss on an investment over a given time and a specified degree of confidence. Traders can apply VaR to determine the level of risk or potential losses of their trading portfolios easily and hence take necessary measures to control the risks.

Disclaimer
Deze inhoud is uitsluitend bedoeld ter informatie en kan producten bevatten die niet beschikbaar zijn in jouw regio. Het is niet bedoeld als (i) beleggingsadvies of een beleggingsaanbeveling; (ii) een aanbod of verzoek om crypto-/digitale bezittingen te kopen, verkopen of aan te houden; of (iii) financieel, boekhoudkundig, juridisch of fiscaal advies. Het bezit van digitale bezittingen of crypto, waaronder stablecoins, brengt een hoog risico met zich mee en de waarde ervan kan sterk fluctueren. Overweeg zorgvuldig of het, aan de hand van je financiële situatie, verstandig is om crypto-/digitale bezittingen te verhandelen of te bezitten. Raadpleeg je juridische, fiscale of beleggingsadviseur als je vragen hebt over je specifieke situatie. De informatie in dit bericht (inclusief eventuele marktgegevens en statistieken) is uitsluitend bedoeld als algemene informatie. Hoewel alle redelijke zorg is besteed aan het voorbereiden van deze gegevens en grafieken, aanvaarden wij geen verantwoordelijkheid of aansprakelijkheid voor eventuele feitelijke fouten of omissies hierin.

© 2025 OKX. Dit artikel kan in zijn geheel worden gereproduceerd of verspreid, en het is toegestaan om fragmenten van maximaal 100 woorden te gebruiken, mits dit gebruik niet commercieel is. Bij elke reproductie of distributie van het volledige artikel dient duidelijk te worden vermeld: 'Dit artikel is afkomstig van © 2025 OKX en wordt met toestemming gebruikt.' Toegestane fragmenten dienen te verwijzen naar de titel van het artikel en moeten een bronvermelding bevatten, zoals: "Artikelnaam, [auteursnaam indien van toepassing], © 2025 OKX." Sommige inhoud kan worden gegenereerd of ondersteund door tools met kunstmatige intelligentie (AI). Afgeleide werken of ander gebruik van dit artikel zijn niet toegestaan.

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