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Industry Concentration

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lightbulbAbout this topic
Industry concentration refers to the degree to which a small number of firms dominate total industry output, sales, or market share. It is often measured using concentration ratios or the Herfindahl-Hirschman Index, indicating the competitive landscape and potential market power within an industry.
lightbulbAbout this topic
Industry concentration refers to the degree to which a small number of firms dominate total industry output, sales, or market share. It is often measured using concentration ratios or the Herfindahl-Hirschman Index, indicating the competitive landscape and potential market power within an industry.

Key research themes

1. How does firm-level product variety and switching behavior shape industry concentration dynamics?

This research theme investigates the role of multiple-product firms and their endogenous product switching decisions in influencing the structure and concentration of industries. By considering firms that add, drop, or switch products dynamically, it explores how internal firm strategies affect market scope, resource allocation, and ultimately concentration measures over time. Understanding this micro-level product portfolio management provides a richer explanation for industry concentration than traditional single-product firm models.

Key finding: The paper finds that over half of US manufacturing firms alter their mix of five-digit SIC products every five years through product adding and dropping, which accounts for substantial changes in firm scope and resource... Read more
Key finding: This study shows that in the presence of vertical relationships, manufacturers' mergers can increase product variety despite raising wholesale prices, by enhancing efficiencies in multi-product retail distribution systems.... Read more

2. What is the relationship between industry concentration levels and firms’ innovation and risk-taking behavior?

This theme explores how varying degrees of market concentration impact firms' strategic decisions to innovate and to undertake risk, affecting industry structure and dynamics. It delves into the competing theoretical perspectives from Schumpeterian and Arrowian views regarding whether concentration fosters or impedes innovation, examines empirical patterns from emerging economies, and investigates how high concentration environments modulate risk-taking, especially in financial sectors.

Key finding: Using company-level data from Ecuador, the paper uncovers that firms with larger market shares are more likely to engage in innovation activities, supporting the market power hypothesis from Schumpeter that imperfect... Read more
Key finding: Analyzing South Africa's highly concentrated banking sector, the paper demonstrates that smaller banks tend to take more credit risk as a strategic move to gain market share in a concentrated industry. This supports the... Read more
Key finding: Leveraging geological heterogeneity and a legal ruling affecting Norwegian investments, the study finds that technology adoption (Enhanced Oil Recovery) leads to greater market concentration by enabling firms with prior... Read more

3. How do industry concentration metrics and firm organization relate to market dynamics and asset pricing?

This theme synthesizes empirical and theoretical work on measurement techniques for industry concentration, the impact of concentration on market performance, and the role of firm heterogeneity and organizational structure. It further investigates how these factors influence asset pricing and firm dynamics in competitive markets, considering both static concentration indices and dynamic models accounting for mergers, entry, and firm heterogeneity.

Key finding: The literature survey establishes that industry concentration in South Africa’s manufacturing sector was high and increasing until 1996, then declined post-1996. It assesses various concentration measures—Gini, Rosenbluth,... Read more
Key finding: The study systematically reviews methods for measuring market concentration, focusing on concentration ratios and Herfindahl-Hirschman Index (HHI) as practical tools under the Structure-Conduct-Performance framework. It... Read more
Key finding: The paper develops a dynamic model incorporating heterogeneous firm productivities, mergers, entry, and exit to analyze industry equilibrium. It shows that merger synergies—both productivity improvements and cost... Read more
Key finding: This methodological paper details econometric frameworks for estimating demand and market power in differentiated product markets, emphasizing the estimation of demand systems essential for quantifying firm conduct and... Read more
Key finding: By integrating firm organizational choices into trade models with heterogeneous productivity, the paper demonstrates that the locus of decision-making power within firms affects firm size, productivity distributions, and... Read more

All papers in Industry Concentration

Ψηλαφώντας την κυρίαρχη αφήγηση για τα προσκόμματα της παραγωγικότητας του εγχώριου οικονομικού υποδείγματος, μια ολιστική προσέγγιση προσκρούει αναγκαστικά σε παραμέτρους ισχύος και ταξικής σύγκρουσης. Ανακύπτουν, δε, αυτόματα ζητήματα... more
Στόχος του άρθρου είναι η συνοπτική επισκόπηση των σημαντικότερων
μετακεϋνσιανών προσεγγίσεων και η ανάδειξη ορισμένων άμεσων
συνεπειών που έχουν ως προς την πολιτική για την απασχόληση
συνολικότερα.
Purpose- This article reviews literature related to peer effects and different financial decisions. It further summarizes the theory and motives that drive peer effects. Also, the study highlights the influence of industry concentration... more
In the study; it is aimed to analyze the level of effects of organizational culture and external factors on the organizational performances of firms in the textile sector in Istanbul, named as the megapol city of Turkey, within the... more
This paper examines the relationship between capital structure and shareholder returns in the UK between 1980 and 2008. Expanding on Modigliani and Miller’s (1958) Proposition 2, returns are estimated using the asset pricing models of... more
PART I Conclusions and discussion........................................................................... 11 2. Issues arising ............................................................................................. 11 2.1.... more
We argue that not only the standard risk factors (size, book-to-market ratio) affect the average stock returns, but also the structure of the product market itself. We address the issue of competition on the Australian stock market,... more
We argue that not only the standard risk factors (size, book-to-market ratio) affect the average stock returns, but also the structure of the product market itself. We address the issue of competition on the Australian stock market,... more
This paper provides new empirical evidence on the effects of mergers and acquisitions (M&As) on the shape of the firm size distribution, by using data of the population of manufacturing firms in the Netherlands. Our analysis shows that... more
Food is always a matter of interest, a means of providing energy, the raw material that builds and maintains our well-being, a defence against illness, a pleasure to consume when well prepared and presented, a basis for social interaction... more
This book presents evidence as of 1987 on industrial concentration and diversification at the European Union level of aggregation that can be compared with country-specific measures of concentration and diversification reported by... more
Analysis of the retail survey of products that carry welfareclaims and of non-retailer led assurance schemes whose logos accompany welfare-claims.
In this paper, I examine the relationship between industry concentration and the cross-section of stock returns in the London Stock Exchange between 1985 and 2010. Using Multifactor asset pricing theory, I test whether industry... more
Brockman for their advice and encouragement since I took up the M.Sc. program at this University. I am particularly grateful to Mr. Roger Lui for his assistance on data enquiries and the use of statistical package. Last but not the least,... more
This study examines the impact on export sales of various promotional strategies for branded food products in foreign markets. It is an empirical analysis using data obtained from organizations that administer the High Value Export... more
Market Basket Analysis (MBA) system is a widely used technique among marketers, especially for undirected data mining analysis. MBA is also known as product association analysis and the outcome of this analysis is called association... more
To maintain product quality and protect consumers, many industries have implemented product National Standards of Indonesia (SNI) and SNI management systems and include the SNI mark on the products they produce. On the other hand, every... more
This study investigates the standard procurement and merchandising practices of wholesale and retail supermarket dairy buyers in New York State. Although much anecdotal and trade information exists regarding how wholesale/retail buyers... more
This article is about the annual OECD report on wage income and wage income taxation. The report revealed that the average wage income in Greece was reduced by 7,4% in 2022. This is a disaster for the government that has been arguing that... more
To maintain product quality and protect consumers, many industries have implemented product National Standards of Indonesia (SNI) and SNI management systems and include the SNI mark on the products they produce. On the other hand, every... more
This study examines the extent to which retailer's country of origin and product assortment influence retailer operating practices. Although conventional wisdom suggests practices are likely to vary by country, universal aspects of... more
Local brands are rapidly emerging in food retail in Asia. However, it is not well understood what impact they have in domestic food markets. In a detailed case study of makhana in Bihar, one of the poorest states in India, we see the fast... more
Local brands are rapidly emerging in food retail in Asia. However, it is not well understood what impact they have in domestic food markets. In a detailed case study of makhana in Bihar, one of the poorest states in India, we see the fast... more
The purpose of this study is to predict the share of visual inventory (SOVI), which is defined as the number of stock-keeping units (SKUs) of a company’s products, calculated as a percentage of the total SKUs on the display of all... more
and the thoughtful comments given by Ryan Denniston on an earlier draft. Any errors that remain are the authors' responsibility.
ΠΟΛΙΤΙΚΗ ΟΙΚΟΝΟΜΙΑ & ΔΗΜΟΣΙΟ ΛΟΓΙΣΤΙΚΟ 41. Το οικονομικό πρόβλημα οφείλεται: (α) Στην άνοδο της ανεργίας. (β) Στον περιορισμό του διαθέσιμου εισοδήματος. (γ) Στην επιβολή φορολογίας. (δ) Στην στενότητα των παραγωγικών συντελεστών.
Since the link between organizations' sustainability initiatives and effects from the societal environment has not been consistently established in the literature, this paper provides a conceptual framework to demonstrate the antecedents... more
This study examines the extent to which retailer's country of origin and product assortment influence retailer operating practices. Although conventional wisdom suggests practices are likely to vary by country, universal aspects of... more
Brockman for their advice and encouragement since I took up the M.Sc. program at this University. I am particularly grateful to Mr. Roger Lui for his assistance on data enquiries and the use of statistical package. Last but not the least,... more
The main aim of the article is to identify issues and analyze the affordability of dairy products at the local retailers in all regions of Slovakia. The main objective of the study is investigation of the availability of local dairy... more
This article is articulated in two sections. In the first-one we try to explain the dynamics of military spending and others social expenditures in the period 1988-2010 for the United States. According to empirical data we support the... more
Preface i Acknowledgements ii Partners and funding iii Resume iv Summary vi Glossary of terms viii 1 Research approach 1.1 Background 1.2 Research base and dissertation structure 1.3 The research process 1.4 Theoretical frame 1.4.1 Food... more
Sourcing organic food products from global green supply chains (GGSCs) spreads across country borders and interacting among a wide spectrum of intermediary stakeholders, which adds complexity and incentivises profit-seeking stakeholders... more
The quest to gain market share within an industry is argued to drive Decision Making Units (DMUs) to accommodate more risk. The cross sectional variations in risk taking is believed to be influenced by the position of the DMU in the... more
Theory predicts that optimal effective corporation tax rates will be negatively related to industry specific sunk costs, and hence industry concentration. Governments should tax industries with monopolistic power softly. Evidence suggests... more
This study seeks to analyze the role of retail eco-brands in the development of markets for sustainability certified food products. Building on insights from the New Institutional Economics (NIE) paradigm, but also broader literature in... more
In Belgium there are a handful of retailers that are offering a gamma of organic products in their supermarkets. Three of these retailers are more important in supplying the product. Analysing the commercialisation of organic beef for... more
Building on the current theory of industrial concentration, we analyze the relation between market size and product differentiation, and show how product differentiation impacts market share turbulence. Our basic results highlight that in... more
To maintain product quality and protect consumers, many industries have implemented product National Standards of Indonesia (SNI) and SNI management systems and include the SNI mark on the products they produce. On the other hand, every... more
To maintain product quality and protect consumers, many industries have implemented product National Standards of Indonesia (SNI) and SNI management systems and include the SNI mark on the products they produce. On the other hand, every... more
To maintain product quality and protect consumers, many industries have implemented product National Standards of Indonesia (SNI) and SNI management systems and include the SNI mark on the products they produce. On the other hand, every... more
Πρόκειται για το πρώτο μέρος έρευνας που στόχο έχει τη μελέτη και την ανάδειξη του ρόλου των απλών στρατιωτών, των συγκροτημένων θεσμών (στρατός, Εκκλησία) αλλά και των απλών πολιτών στο Έπος του 1940, έχοντας ως ερευνητικό επίκεντρο την... more
Convergence processes are based on the activity of distinct industry sectors showing cross-industry collaborations. The aim of this paper is to analyze cross-industry collaborations between the food and pharmaceutical sectors in the... more
The quest to gain market share within an industry is argued to drive Decision Making Units (DMUs) to accommodate more risk. The cross sectional variations in risk taking is believed to be influenced by the position of the DMU in the... more
Since mid 2020 the Greek society is faced with huge electricity prices exceeding the Eurozone average by at least 30%. The reason is simple. Coal production by the state owned electricity company (ΔΕΗ) costing 205 euros by megawatt hour... more
Constructing circulation mode of high feasibility and good implementation effect is the key method to solve difficulties in the development of "Agricultural Super-Docking" at present in China. There are many problems that exist in the... more
Trade system and the pattern of distribution of commodities in the regions that are bad will affect the control of the supply and demand of these commodities. The stability of commodity prices will also be affected, inflation towards... more
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