McKesson Corporation
MX ˙ BMV ˙ US58155Q1031
SecurityMX:MCK / McKesson Corporation
InstitutionRafferty Asset Management, LLC
Latest Disclosed Ownership9,463 shares
Latest Disclosed Value $ 8,188,902
Rafferty Asset Management, LLC reports 28.79% decrease in ownership of MCK / McKesson Corporation

On May 15, 2026 - Rafferty Asset Management, LLC filed a 13F-HR form disclosing ownership of 9,463 shares of McKesson Corporation (MX:MCK) valued at $8,188,902 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 13,289 shares of McKesson Corporation. This represents a change in shares of -28.79% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F MCKESSON COM 58155Q103 9,463 -3,826 -28.79 8,189 -24.88 0.0332
2026-02-13 2025-12-31 13F MCKESSON COM 58155Q103 13,289 -518 -3.75 10,901 2.19 0.0377
2025-11-12 2025-09-30 13F MCKESSON COM 58155Q103 13,807 583 4.41 10,666 10.07 0.0346
2025-08-14 2025-06-30 13F MCKESSON COM 58155Q103 13,224 1,619 13.95 9,690 24.07 0.0320
2025-05-14 2025-03-31 13F MCKESSON COM 58155Q103 11,605 -2,791 -19.39 7,810 -4.80 0.0333
2025-02-14 2024-12-31 13F MCKESSON COM 58155Q103 14,396 1,244 9.46 8,204 26.18 0.0290
2024-11-13 2024-09-30 13F MCKESSON COM 58155Q103 13,152 -991 -7.01 6,503 -21.28 0.0223
2024-08-13 2024-06-30 13F MCKESSON COM 58155Q103 14,143 580 4.28 8,260 13.45 0.0307
2024-05-13 2024-03-31 13F MCKESSON COM 58155Q103 13,563 13 0.10 7,281 16.07 0.0272
2024-02-13 2023-12-31 13F MCKESSON COM 58155Q103 13,550 -523 -3.72 6,273 2.52 0.0265
2023-11-13 2023-09-30 13F MCKESSON COM 58155Q103 14,073 949 7.23 6,120 9.11 0.0360
2023-08-11 2023-06-30 13F MCKESSON COM 58155Q103 13,124 853 6.95 5,608 28.36 0.0316
2023-05-11 2023-03-31 13F MCKESSON COM 58155Q103 12,271 42 0.34 4,369 -4.75 0.0296
2023-02-13 2022-12-31 13F MCKESSON COM 58155Q103 12,229 4,548 59.21 4,587 75.68 0.0384
2022-11-14 2022-09-30 13F MCKESSON COM 58155Q103 7,681 4,154 117.78 2,611 126.85 0.0278
2022-08-12 2022-06-30 13F MCKESSON COM 58155Q103 3,527 -1,052 -22.97 1,151 -17.90 0.0106
2022-05-13 2022-03-31 13F MCKESSON COM 58155Q103 4,579 -553 -10.78 1,402 9.87 0.0083
2022-02-10 2021-12-31 13F MCKESSON COM 58155Q103 5,132 200 4.06 1,276 29.81 0.0067
2021-11-10 2021-09-30 13F MCKESSON COM 58155Q103 4,932 1,658 50.64 983 57.03 0.0067
2021-08-10 2021-06-30 13F MCKESSON COM 58155Q103 3,274 -287 -8.06 626 -9.93 0.0039
2021-05-10 2021-03-31 13F MCKESSON COM 58155Q103 3,561 236 7.10 695 20.24 0.0047
2021-02-10 2020-12-31 13F MCKESSON COM 58155Q103 3,325 -227 -6.39 578 9.26 0.0056
2020-11-13 2020-09-30 13F MCKESSON COM 58155Q103 3,552 -715 -16.76 529 -19.24 0.0064
2020-08-07 2020-06-30 13F MCKESSON COM 58155Q103 4,267 4,267 655 0.0092
2020-05-15 2020-03-31 13F MCKESSON COM 58155Q103 0 -4,873 -100.00 0 -100.00
2020-02-10 2019-12-31 13F MCKESSON COM 58155Q103 4,873 -10,165 -67.60 674 -67.20 0.0104
2019-11-14 2019-09-30 13F MCKESSON COM 58155Q103 15,038 15,038 2,055 0.0321
2016-05-12 2016-03-31 13F MCKESSON COM 58155Q103 0 0 0 0.0000
2016-02-12 2015-12-31 13F MCKESSON COM 58155Q103 0 0 0 0.0000
2015-11-12 2015-09-30 13F MCKESSON COM 58155Q103 0 -5,096 -100.00 0 -100.00
2015-08-12 2015-06-30 13F MCKESSON COM 58155Q103 5,096 3,238 174.27 1,146 172.86 0.0769
2015-05-14 2015-03-31 13F MCKESSON COM 58155Q103 1,858 1,858 420 0.0317
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.