Value at risk (VaR) is a statistical technique used to measure and quantify the level of financial risk within a firm or investment portfolio over a specific time frame. This metric is most commonly used by investment and commercial banks to determine the extent and occurrence ratio of potential losses in their institutional portfolios. VaR calculations can be applied to specific positions or portfolios as a whole or to measure firm-wide risk exposure.

Investment banks commonly apply VaR modeling to firm-wide risk due to the potential for independent trading desks to expose the firm to highly correlated assets unintentionally. Employing a firm-wide VaR assessment allows for the determination of the cumulative risks from aggregated positions held by different trading desks and departments within the institution. Using the data provided by VaR modeling, financial institutions can determine whether they have sufficient capital reserves in place to cover losses or whether higher-than-acceptable risks require concentrated holdings to be reduced.

There is no standard protocol for the statistics used to determine asset, portfolio or firm-wide risk. For example, statistics pulled arbitrarily from a period of low volatility may understate the potential for risk events to occur, as well as the potential magnitude. Risk may be further understated using normal distribution probabilities, which generally do not account for extreme or black swan events.

www.nature.com [PDF]

… 9 . Why is it important to know the impact of climate change on asset values? Institutional … 12,13 . Value at risk (VaR) quantifies the size of loss on a portfolio of assets over a given time horizon, at given probability. Thus, our …

ideas.repec.org [PDF]

… 9 . Why is it important to know the impact of climate change on asset values? Institutional … 12,13 . Value at risk (VaR) quantifies the size of loss on a portfolio of assets over a given time horizon, at given probability. Thus, our …

ideas.repec.org [PDF]

… 9 . Why is it important to know the impact of climate change on asset values? Institutional … 12,13 . Value at risk (VaR) quantifies the size of loss on a portfolio of assets over a given time horizon, at given probability. Thus, our …

www.econstor.eu [PDF]

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… 9 . Why is it important to know the impact of climate change on asset values? Institutional … 12,13 . Value at risk (VaR) quantifies the size of loss on a portfolio of assets over a given time horizon, at given probability. Thus, our …

ideas.repec.org [PDF]

… 9 . Why is it important to know the impact of climate change on asset values? Institutional … 12,13 . Value at risk (VaR) quantifies the size of loss on a portfolio of assets over a given time horizon, at given probability. Thus, our …

academic.oup.com [PDF]

… 9 . Why is it important to know the impact of climate change on asset values? Institutional … 12,13 . Value at risk (VaR) quantifies the size of loss on a portfolio of assets over a given time horizon, at given probability. Thus, our …

www.sciencedirect.com [PDF]

… 9 . Why is it important to know the impact of climate change on asset values? Institutional … 12,13 . Value at risk (VaR) quantifies the size of loss on a portfolio of assets over a given time horizon, at given probability. Thus, our …

www.sciencedirect.com [PDF]

… 9 . Why is it important to know the impact of climate change on asset values? Institutional … 12,13 . Value at risk (VaR) quantifies the size of loss on a portfolio of assets over a given time horizon, at given probability. Thus, our …

www.sciencedirect.com [PDF]

… 9 . Why is it important to know the impact of climate change on asset values? Institutional … 12,13 . Value at risk (VaR) quantifies the size of loss on a portfolio of assets over a given time horizon, at given probability. Thus, our …

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