Technical paper
Modeling Alberta power prices through fundamentals
The authors of this paper model medium- and long-term Alberta power prices by identifying the primary price drivers and characterizing their dynamics in an engineering-based bottom-up model.
Scaling by the square-root-of-time rule: an empirical investigation using five market indexes
This paper analyzes five composite stock indexes to determine the different behaviors of scaling across markets.
Calibration of local correlation models to basket smiles
The authors build a whole family of local correlation models by combining the particle method with a new, simple idea.
Insights into robust optimization: decomposing into mean–variance and risk-based portfolios
The authors of this paper aim to demystify portfolios selected by robust optimization by looking at limiting portfolios in the cases of both large and small uncertainty in mean returns.
A prudent loss given default estimation for mortgages
The author of this paper proposes a prudent methodology to correct for potential biases in LGD estimations due to historical price appreciations, appraisal biases and wear-and-tear or potential damage to the house.
Optimal B-robust posterior distributions for operational risk
The aim of this paper is to integrate prior information into a robust parameter estimation via OBR-estimating functions.
Zonal merit-order effects of wind generation development on day-ahead and real-time electricity market prices in Texas
This paper uses a regression-based approach to explore the impact of wind generation development on wholesale electricity prices in the ERCOT market.
A quick tool to forecast value-at-risk using implied and realized volatilities
The authors propose a naive model to forecast ex ante value-at-risk (VaR), using a shrinkage estimator between realized volatility estimated on past return time series as well as implied volatility quoted in the market.
Delta-hedged gains and risk-neutral moments
The authors investigate the underperformance of delta-hedged option portfolios in relation to ex ante moments of the stock market’s return distribution.
Equal risk allocation with carry, value and momentum
The authors of this paper analyze an equal-weight portfolio of global cross-asset-class risk factor exposures.
A map of collateral uses and flows
This paper provides insights into the increased demand for collateral, the reduced capacity for banks to act as collateral intermediaries and examples of risks and vulnerabilities in collateral flows.
Consensus information and consensus rating: a simulation study on rating aggregation
This paper explores the aggregation of different single ratings to a ‘consensus rating’ to get a higher precision of a debtor’s default probability. It builds upon the methodology published by Grün et al, 2013 and Lehmann and Tillich, 2016.
The benefit of using random matrix theory to fit high-dimensional t-copulas
This paper uses simulation studies and an example of operational risk modeling to show the necessity and benefit of using RMT to fit high-dimensional t-copulas in risk modeling.
‘Hot-start’ initialisation of the Heston model
Serguei Mechkov initialises Heston model’s parameters using probability distributions
Gap risk KVA and repo pricing
Wujiang Lou introduces a reserve capital approach to the hedging error in the BSM model
Benchmarking the loss given default parameter for mortgage loan portfolios under stress
The authors analyze the impact of a decline in property prices that leads to stressed recovery rates for collateral on the loss given default (LGD) parameter in portfolios of mortgage loan.
Commodity volatility, skew and inverse leverage effect
Krzysztof Wolyniec on leverage effects and volatility in commodity markets
Adjusting VAR to correct sample volatility bias
David Frank proposes an adjustment to sample variance for the computation of value-at-risk
The Nordic futures market for power: finally mature and efficient?
The authors of this paper study the forecasting performance of Nordic power futures in order to see whether the futures bias reported in a number of previous studies still prevails and, if so, whether this means that the market is inefficient.
Compositional methods applied to capital allocation problems
In this paper, the authors examine the relationship between capital allocation problems and compositional data, and show that capital allocation principles can be interpreted as compositions.
Financial networks and bank liquidity
This papers is the first to link bank liquidity performance and core–periphery network structures.
Financial and nonfinancial variables as long-horizon predictors of bankruptcy
This paper assesses the predictive ability of financial and nonfinancial variables for a long horizon in a large cross-sectional sample of Finnish firms
Further investigation of parametric loss given default modeling
The authors conduct a comprehensive study of some parametric models that are designed to fit the unusual bounded and bimodal distribution of loss given default (LGD).
Acceptability bounds for forward starting options using disciplined convex programming
The dual problem of pricing to acceptability is formulated as a disciplined convex program solvable by the software CVXOPT.