If I go to Labcorp for my bloodwork, how much of my information, including test results, is shared with its owners? If I have a JP Morgan or a Vanguard account, or a Blackrock mortgage account, how would my personal information would be used?

Went to get blood work done at Labcorp. Always curious about who own the company that I get service from. Looked Labcorp up and found that they're owned

https://ir.labcorp.com/financials/ownership-profile

The Vanguard Group, Inc. 11.76

BlackRock Institutional Trust Company, N.A. 5.89

State Street Global Advisors (US) 4.51

Wellington Management Company, LLP 3.04

BlackRock Financial Management, Inc. 3.03

JP Morgan Asset Management 2.18

Geode Capital Management, L.L.C. 2.05

Lazard Asset Management, L.L.C. 1.73

Dimensional Fund Advisors, L.P. 1.65

BlackRock Investment Management, LLC …

account advisors blackrock financial global go to information jp morgan labcorp management morgan mortgage own personal personal information privacy results service state state street test test results the company trust work