MCKESSON CORP (MCK) Stock Institutional Trading Activity
MCKESSON CORP (MCK) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q4 2025), investors with some of the largest reported share count changes include Renaissance Technologies LLC, Cullen Value Fund, Sequoia Financial Advisors, Muhlenkamp & Co, and Viking Global Investors. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.
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- MCKESSON CORP (MCK) stock institutional ownership
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| Portfolio quarter | Name | Type | Quantity | Remaining | Reported stock balance |
|---|---|---|---|---|---|
| Q4 2018 | Renaissance Technologies LLC | Buy | 244,210 | 943,610 | $104,241 |
| Q4 2018 | Baupost Group | Sell | -455,689 | 1,720,011 | $190,010 |
| Q4 2018 | Vulcan Value Partners | Sell | -927,581 | 4,491,391 | $496,164 |
| Q4 2018 | Hancock Classic Value | Sell | -83,780 | 3,076,415 | $339,852 |
| Q3 2018 | Arbiter Partners Capital Management | Buy | 10,000 | 119,800 | $15,891 |
| Q3 2018 | Renaissance Technologies LLC | Buy | 134,200 | 699,400 | $92,775 |
| Q3 2018 | Baupost Group | Buy | 548,000 | 2,175,700 | $288,607 |
| Q3 2018 | Vulcan Value Partners | Buy | 1,650,873 | 5,418,972 | $718,827 |
| Q3 2018 | Muhlenkamp & Co | Sell | -348 | 70,742 | $9,384 |
| Q3 2018 | Hancock Classic Value | Buy | 323,485 | 3,160,195 | $419,200 |
| Q2 2018 | Sequoia Financial Advisors | Sell | -715 | 1,861 | $248 |
| Q2 2018 | Baupost Group | Buy | 12,000 | 1,627,700 | $217,135 |
| Q2 2018 | Vulcan Value Partners | Buy | 273,090 | 3,768,099 | $502,664 |
| Q2 2018 | Hancock Classic Value | Buy | 201,062 | 2,836,710 | $378,417 |
| Q1 2018 | Sequoia Financial Advisors | Buy | 658 | 2,576 | $363 |
| Q1 2018 | Arbiter Partners Capital Management | Buy | 21,800 | 109,800 | $15,468 |
| Q1 2018 | Baupost Group | Buy | 255,700 | 1,615,700 | $227,604 |
| Q1 2018 | Vulcan Value Partners | Sell | -117,380 | 3,495,009 | $492,342 |
| Q1 2018 | Muhlenkamp & Co | Buy | 1,143 | 71,090 | $10,014 |
| Q1 2018 | Hancock Classic Value | Buy | 35,247 | 2,635,648 | $371,284 |
| Q4 2017 | Sequoia Financial Advisors | Sell | -13 | 1,918 | $299 |
| Q4 2017 | Arbiter Partners Capital Management | Buy | 40,000 | 88,000 | $13,724 |
| Q4 2017 | Baupost Group | Buy | 860,000 | 1,360,000 | $212,092 |
| Q4 2017 | Vulcan Value Partners | Buy | 305,492 | 3,612,389 | $563,352 |
| Q4 2017 | Muhlenkamp & Co | Sell | -1,009 | 69,947 | $10,908 |
| Q4 2017 | Hancock Classic Value | Buy | 141,870 | 2,600,401 | $405,533 |
| Q3 2017 | Parnassus Endeavor Fund | Buy | 3,312 | 4,432,150 | $680,823 |
| Q3 2017 | Sequoia Financial Advisors | Buy | 13 | 1,931 | $297 |
| Q3 2017 | Baupost Group | Sell | -500,000 | 500,000 | $76,805 |
| Q3 2017 | Renaissance Technologies LLC | Sell | -435,700 | 565,200 | $86,820 |
Frequently asked questions about MCK activity
Which institutional owners are buying MCK?
Institutional owners buying MCK include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in MCK activity?
"Buy" means an investor increased their reported position in MCK compared to the prior reporting period. This reflects growing exposure to MCKESSON CORP (MCK) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in MCK increasing?
Institutional interest in MCK can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.