R, Scientometrics, Knowledge Management, and Social Network Analysis

Directorship Interlocks among US 51 Largest Companies (by Market Caps)

with 2 comments

I tried to map the directorship interlocks among the companies.

The data sources are from:

  • Finviz (I used the screener to find the largest companies – as per 4 February 2010)
  • Reuters (the list of directors for each company)

Software used:

  • Ucinet (For the creation of affiliation matrices derived from the DL file)
  • ORA (For the visualiation)

The results are here:

  • Directorship Interlocks Map – the larger the node size the higher the betweenness of the company top 51
  • List of Directors & Company Abbreviations List (http://www.box.net/shared/d1nant9r9a)

The top 10 companies with the highest betweenness centrality are as follows:

  • IBM – INTL BUSINESS MAC
  • BA – BOEING CO
  • GE – GEN ELECTRIC CO
  • WFC – WELLS FARGO & CO
  • UTX – UNITED TECH
  • JPM – JP MORGAN CHASE C
  • DIS – WALT DISNEY-DISNE
  • MCD – MCDONALDS CP
  • BRK – BERKSHIRE

I will come up with more statistical measures of the network in the subsequent post.

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Written by Mathias

February 7, 2010 at 9:42 am

2 Responses

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  1. Thanks for this! I actually was just looking for something like this. I have an outdated picture of Sweden’s 100 largest corporations.

    So, I was wondering whether you are taking this anywhere in terms of analysis. Is there a “so-what” of this network? For example, is there a story about how these people get chosen? Or does position have to do anything with performance? Why were you interested in doing this analysis? I would be curious to know.

    Robin Teigland

    February 16, 2010 at 2:28 pm

  2. Also take a look at http://www.theyrule.net/

    SM

    June 16, 2010 at 2:02 am


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