Show HN: Common ownership between S&P 500 companies

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Show HN: Common ownership between S&P 500 companies
Shared Possession Dashboard

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HolderPossession
Forefront Group, Inc. (Subfiler)7.95%
Capital Evaluation & Administration Co.7.34%
Notify Avenue Corp.4.15%
Fidelity Administration & Evaluation Co. LLC2.93%
BlackRock Institutional Have religion Co. NA2.42%
T. Rowe Save Buddies, Inc. (Funding Administration)2.27%
BlackRock Fund Advisors2.16%
Capital Evaluation & Administration Co. (World Merchants)1.83%
Geode Capital Administration LLC1.53%
Capital Evaluation & Administration Co. (Worldwide Merchants)1.37%
HolderPossession
Forefront Group, Inc. (Subfiler)7.29%
Berkshire Hathaway, Inc.5.66%
Notify Avenue Corp.4.17%
BlackRock Institutional Have religion Co. NA2.32%
BlackRock Fund Advisors2.00%
Fidelity Administration & Evaluation Co. LLC1.97%
Geode Capital Administration LLC1.48%
T. Rowe Save Buddies, Inc. (Funding Administration)1.30%
Northern Have religion Corp.1.24%
Norges Financial institution (13F)1.08%

2 COMMENTS

  1. Over the last few weeks, I’ve been using a break from school to take on a number of financial data projects, some of which I’ve posted on here. The latest is a dashboard that allows you to find shared ownership between any two S&P 500 companies, using data scraped from Yahoo Finance.

    This project was inspired by “The Problem of 12”, the fact that most public companies are increasingly being controlled by a small group of institutional investors: https://ssrn.com/abstract=3247337

    There is compelling evidence that this shared ownership can lead to anticompetitive outcomes, such as lower wages and higher prices: https://ssrn.com/abstract=2427345.

    My goal is to highlight the extent to which ownership of many competing companies is being concentrated among a small number of institutions, and spark discussion about this problem.

    Let me know if you have any suggestions for improvements to the dashboard, or ideas for new projects for me to work on!

  2. This data is kind of interesting, but holdup:

    >"We are rapidly moving into a world in which the bulk of equity capital of large companies with dispersed ownership will be owned by a small number of institutions… It is not an exaggeration to say that even if this mega-trend begins to taper off, the majority of the 1,000 largest U.S. companies will be controlled by a dozen or fewer people over the next ten to twenty years."
    >- John C. Coates, IV, Harvard Law, "The Problem of Twelve"

    The data on the page counteracts this point, nearly all the examples presented are of wealth management funds or holding companies, representing millions and millions of people. The #1 investor is literally Vanguard, the investor cooperative.

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