Non-storability of a commodity implies the independence of corresponding spot and futures prices. We investigate empirically the case of electricity and show that a relation does emerge between spots and forwards. This is because of the links in storable fuels used for production and behavioural biases in power trading. The latter cause a significant influence of the electricity spot price on t...

Electricity generators in most deregulated markets simultaneously operate in both financial (contract) and physical (spot) markets. Decisions in each of these markets are not mutually exclusive, and in the case of imperfectly competitive scenarios generating companies can use their market power to influence spot and contract prices. A model of oligopolistic market equilibrium is presented where...

There is an ongoing debate about the credit card industry regarding how effective competition has been at reducing prices. Some experts argue that intense competition is clearly evident and leads to low prices that contain no excess profit. However, other experts find evidence both in price data and in market concentration that competition has failed. A model is presented here showing that if t...

I discuss the short-run dynamics of commodity prices, production, and inventories, as well as the sources and effects of market volatility. I explain how prices, rates of production, ana’ inventory levels are interrelated, and are determined via equilibrium in two interconnected markets: a cash market for spot purchases and sales of the commodity, and a market for storage. I show how equilibriu...

The increasing penetration of renewable energy in recent years has led to more uncertainties in power systems. In order to maintain system reliability and security, electricity market operators need to keep certain reserves in the SecurityConstrained Economic Dispatch (SCED) problems. A new concept, deliverable generation ramping reserve, is proposed in this paper. The prices of generation ramp...

We study the problem of determination of asset prices in an incomplete market proposing three different but related scenarios. One scenario uses a market game approach whereas the other two are based on risk sharing or regret minimizing considerations. Dynamical schemes modeling the convergence of the buyer’s and of the seller’s prices to a unique price are proposed. MSC2000 : 91B24, 91B26, 60H...

T his study examines how oil price shocks interact with the stock market index within a nonlinear autoregressive distributed lag model in Iran. Based on quarterly data for the period from 1991 to 2017, the findings revealed statistically significant evidence of short-run and long-run asymmetric behavior of stock market index in response to the positive a...

RECENT EVENTS and research findings increasingly suggest that the stock market is not driven solely by news about fundamentals. There seem to be good theoretical as well as empirical reasons to believe that investor sentiment, also referred to as fads and fashions, affects stock prices. By investor sentiment we mean beliefs held by some investors that cannot be rationally justified. Such invest...