[eng] Pricing new economy companies by real options : dizziness and dispute of an analogy. The pricing of the « New Economy » firms is complex and perilous because the traditional valuation models are inefficient when valuing firms with no positive earnings, no long history of performance, no...

[fre] Les événements récents ont montré l’intérêt d’une mesure de la turbulence sur les marchés financiers. Les mesures classiques de volatilité ne permettent pas en effet de capter parfaitement les comportements et horizons hétérogènes des intervenants sur le marché. Nous...

[eng] Does market volatility increase ? . The French stock exchange has known a deep fall in prices for 3 years with great uncertainties on economic activity and firms' finances. So, this article deals with the size of market' s turbulences, their origins and the measures to take. A proper...