Evaluating criticality of strategic metals: Are the Herfindahl–Hirschman Index and usual concentration thresholds still relevant?
Fiche du document
- ISIDORE Id: 10670/1.cfb346...
- hal: hal-04924186
- doi: 10.1016/j.eneco.2025.108208
Ce document est lié à :
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.eneco.2025.108208
http://creativecommons.org/licenses/by/ , info:eu-repo/semantics/OpenAccess
Mots-clés
Strategic metals Criticality Herfindahl–Hirschman index Metal prices Panel regression C - Mathematical and Quantitative Methods/C.C2 - Single Equation Models • Single Variables/C.C2.C23 - Panel Data Models • Spatio-temporal Models C - Mathematical and Quantitative Methods/C.C2 - Single Equation Models • Single Variables/C.C2.C24 - Truncated and Censored Models • Switching Regression Models • Threshold Regression Models Q - Agricultural and Natural Resource Economics • Environmental and Ecological Economics/Q.Q0 - General/Q.Q0.Q02 - Commodity Markets Q - Agricultural and Natural Resource Economics • Environmental and Ecological Economics/Q.Q3 - Nonrenewable Resources and Conservation/Q.Q3.Q34 - Natural Resources and Domestic and International ConflictsSujets proches
Metallic elementsCiter ce document
Pauline Bucciarelli et al., « Evaluating criticality of strategic metals: Are the Herfindahl–Hirschman Index and usual concentration thresholds still relevant? », HAL SHS (Sciences de l’Homme et de la Société), ID : 10.1016/j.eneco.2025.108208
Métriques
Partage / Export
Résumé
This paper aims to evaluate the criticality of strategic metals by (i) investigating the validity of the Herfindahl–Hirschman Index (HHI) for assessing the supply risk aspect of criticality and (ii) determining an appropriate threshold for using this indicator in the context of criticality studies. Relying on a large panel of 33 strategic metals over the 1995–2021 period, our findings show that the variation of HHI has more impact on metal prices at lower HHI levels and question the existence of a threshold that clearly distinguishes high-risk markets from less risky ones based on their concentration levels. Overall, we show that using the HHI as a supply risk indicator, especially in conjunction with a threshold, may result in underestimating risks in less concentrated markets.
