Labcorp Holdings Inc.
One of the world's largest medical testing companies, Labcorp runs thousands of patient service centers and supports drug development trials for biopharma clients around the globe, offering everything from routine blood work to oncology and prenatal screening. It began in 1969, when three brothers—the Powells—started testing specimens in the former laundry room of a North Carolina hospital; that lab merged with National Health Laboratories in 1995 to create today's company.
Estimated from filings — the split-adjusted price range over the quarters each manager built the position. A range, not a fill price; 13F reports a quarter-end snapshot, not a trade date.