The Impact of Electronic Clock Auction Systems on Shellfish Prices: Econometric Evidence from a Structural Change Model

Patrice Guillotreau and Ramón Jiménez‐Toribio

Journal of Agricultural Economics, 2006, vol. 57, issue 3, 523-546

Abstract: Economic theory suggests that different auction systems may lead to different price equilibria under specific conditions. By changing the trading rules, the introduction of electronic clock auction systems (ECAS) on primary fish markets is likely to modify the price formation process. A relationship between the prices of live prawns (Nephrops norvegicus) in two French ports where different ECAS have been successively introduced is estimated through two univariate models and a vector autoregressive model applied to stationary weekly data series. Using a recent multiple break searching procedure (Econometrica, Vol. 66, 1998, 47; Journal of Applied Econometrics, Vol. 18, 2003, 1; Econometrics Journal, Vol. 6, 2003, 72), a single structural change matching the date of implementation is discovered in the two ports and shows a different impact partly explained by the type of auction system in force. The introduction of the Euro in January 2002 also appeared to play an influential role in the adoption of electronic clock auction markets.

Date: 2006
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