A method of calculating value-at-risk (VaR) that uses historical data to assess the impact of market moves on a portfolio. A current portfolio is subjected to historically recorded market movements; this is used to generate a distribution of returns on the portfolio. This distribution can then be used to calculate the maximum loss with a given likelihood – that is, the VaR.
Because historical simulation uses real data, it can capture unexpected events and correlations that would not necessarily be predicted by a theoretical model.
The Energy Risk Glossary, now in its eighth edition, provides an at-a-glance explanation of the myriad specialised terms and acronyms used in energy trading and risk management.
This year, the guide has been updated by Aviv Handler of ETR Advisory. Energy Risk would like to thank him for his input into this edition, which benefits greatly from his valuable experience and insight into energy markets.
The fast-changing nature of these markets means much has changed since our last edition – almost 200 new entries and revisions have been made this year. Reflecting the increasing importance of regulation, definitions of the Markets in Financial Instruments Directive (MiFid) and the Ljubljana-based Agency for the Cooperation of Energy Regulators (Acer) make it into the glossary for the first time. A focus on improving back-office infrastructure and mitigating counterparty risk is also apparent from the inclusion of terms such as ‘portfolio reconciliation’ and ‘portfolio compression’.
The glossary is extensively cross-referenced, making for easy and thorough searches. We hope you find it useful.
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