← Data Explorer · All industries
Major group 80: Health services
Companies whose SIC industry code starts with 807. Companies with no code (SIC 0) and shell companies (SIC 9995) are left out.
The tiles, heatmap and tables below use the industry’s S&P 500 companies.
Average profit weight in the industry over time
The mean profit weight over every ordered pair of the industry’s companies, each quarter: S&P 500 companies (solid) and all companies (faded). Click a quarter to show it.
Computed from the current data release, using every firm in the sample. Published papers used earlier releases and samples, so their figures differ slightly.
Show the numbers
Profit weights between the 3 largest companies, 2020 Q4
Each cell is the profit weight of the row company’s shareholders on the column company (darker: higher). Companies are ordered so that tightly linked groups form blocks. Largest means most reported owners. Click a cell to compare the two companies.
| Fonar Corp | Laboratory Corp Ameri… | Quest Diagnostics Inc | Report | |
|---|---|---|---|---|
| Fonar Corp | 0.48 | 0.49 | ||
| Laboratory Corp America Hldgs | 0.54 | 0.93 | ||
| Quest Diagnostics Inc | 0.52 | 0.87 |
Investors who drive it, 2020 Q4
The investors that contribute most to the industry’s average profit weight: roughly, those holding sizeable stakes in many of its companies at once. Investor types are inferred from the forms each investor files with the SEC and are under review. Anyone filing Forms 3/4/5 counts as an insider unless they also file 13F, in which case they count as an asset manager (such as Carl Icahn).
- Big Three
- Asset manager
- Non-financial blockholder
- Activist
- Insider
| # | Investor | Type | Companies held here | Share of the average | SEC CIK | Report |
|---|---|---|---|---|---|---|
| 1 | Vanguard Group Inc | Big Three | 3 | 46% | 102909 | |
| 2 | BlackRock Inc. | Big Three | 3 | 32% | 1364742 | |
| 3 | State Street Corp | Big Three | 3 | 7% | 93751 | |
| 4 | Dimensional Fund Advisors LP | Asset manager | 3 | 4% | 354204 | |
| 5 | Geode Capital Management, LLC | Asset manager | 3 | 1% | 1214717 | |
| 6 | Royce & Associates LP | Asset manager | 3 | 1% | 38777 | |
| 7 | Renaissance Technologies LLC | Asset manager | 3 | 1% | 1037389 | |
| 8 | Northern Trust Corp | Asset manager | 3 | 1% | 73124 | |
| 9 | LSV Asset Management | Asset manager | 3 | 0.9% | 1050470 | |
| 10 | Bank of America Corp /DE/ | Asset manager | 3 | 0.7% | 70858 | |
| 11 | JPMorgan Chase & Co | Asset manager | 3 | 0.6% | 19617 | |
| 12 | Nordea Investment Management AB | Asset manager | 2 | 0.5% | 1218210 | |
| 13 | Bank of New York Mellon Corp | Asset manager | 3 | 0.5% | 1629943 | |
| 14 | Morgan Stanley | Asset manager | 3 | 0.4% | 895421 | |
| 15 | Massachusetts Financial Services Co /MA/ | Asset manager | 2 | 0.4% | 912938 | |
| 16 | Wellington Management Group LLP | Asset manager | 2 | 0.4% | 902219 | |
| 17 | UBS Asset Management Americas Inc*Ubs Group AG | Asset manager | 3 | 0.3% | 1610520 | |
| 18 | Norges Bank | Asset manager | 2 | 0.2% | 1374170 | |
| 19 | California Public Employees Retirement System | Asset manager | 3 | 0.2% | 919079 | |
| 20 | Alliancebernstein L.P. | Asset manager | 2 | 0.2% | 1109448 | |
| 21 | Nuveen Asset Management, LLC | Asset manager | 3 | 0.1% | 1521019 | |
| 22 | FMR Llc*Fil LTD | Asset manager | 3 | 0.1% | 315066 | |
| 23 | Legal & General Group PLC | Asset manager | 3 | 0.1% | 764068 | |
| 24 | Invesco LTD. | Asset manager | 3 | 0.1% | 914208 | |
| 25 | Janus Henderson Group PLC | Asset manager | 2 | 0.1% | 1274173 |
The companies, 2020 Q4
| Company | Reported owners | Reported ownership | SEC CIK | Report |
|---|---|---|---|---|
| Laboratory Corp America Hldgs SIC 8071 · S&P 500 · outlier | 865 | 90.24% | 920148 | |
| Quest Diagnostics Inc SIC 8071 · S&P 500 | 788 | 87.05% | 1022079 | |
| Fonar Corp SIC 8071 · S&P 500 · dual class | 60 | 55.54% | 355019 |
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