McKesson Corporation
MX ˙ BMV ˙ US58155Q1031
SecurityMX:MCK / McKesson Corporation
InstitutionBlair William & Co/il
Latest Disclosed Ownership80,042 shares
Latest Disclosed Value $ 69,264,793
Blair William & Co/il reports 177.23% increase in ownership of MCK / McKesson Corporation

On May 8, 2026 - Blair William & Co/il filed a 13F-HR form disclosing ownership of 80,042 shares of McKesson Corporation (MX:MCK) valued at $69,264,793 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 28,872 shares of McKesson Corporation. This represents a change in shares of 177.23% 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)
2026-05-08 2026-03-31 13F MCKESSON COM 58155Q103 80,042 51,170 177.23 69,265 192.46 0.1985
2026-02-17 2025-12-31 13F MCKESSON COM 58155Q103 28,872 14,815 105.39 23,684 118.10 0.0636
2025-11-12 2025-09-30 13F MCKESSON COM 58155Q103 14,057 1,565 12.53 10,860 18.64 0.0289
2025-07-24 2025-06-30 13F MCKESSON COM 58155Q103 12,492 -827 -6.21 9,154 2.12 0.0254
2025-05-09 2025-03-31 13F MCKESSON COM 58155Q103 13,319 -509 -3.68 8,964 13.74 0.0270
2025-02-12 2024-12-31 13F MCKESSON COM 58155Q103 13,828 -485 -3.39 7,881 11.36 0.0229
2024-11-12 2024-09-30 13F MCKESSON COM 58155Q103 14,313 -275 -1.89 7,077 -16.95 0.0208
2024-08-12 2024-06-30 13F MCKESSON COM 58155Q103 14,588 -6,341 -30.30 8,520 -24.17 0.0263
2024-05-09 2024-03-31 13F MCKESSON COM 58155Q103 20,929 -444 -2.08 11,236 13.54 0.0353
2024-02-12 2023-12-31 13F MCKESSON COM 58155Q103 21,373 -17 -0.08 9,895 6.39 0.0337
2023-11-09 2023-09-30 13F MCKESSON COM 58155Q103 21,390 257 1.22 9,301 3.00 0.0357
2023-08-11 2023-06-30 13F MCKESSON COM 58155Q103 21,133 1,277 6.43 9,031 27.74 0.0331
2023-05-12 2023-03-31 13F MCKESSON COM 58155Q103 19,856 -141 -0.71 7,070 -5.76 0.0282
2023-02-10 2022-12-31 13F MCKESSON COM 58155Q103 19,997 -865 -4.15 7,501 5.78 0.0326
2022-11-09 2022-09-30 13F MCKESSON COM 58155Q103 20,862 6,514 45.40 7,091 51.48 0.0326
2022-08-10 2022-06-30 13F MCKESSON COM 58155Q103 14,348 2,099 17.14 4,681 24.83 0.0208
2022-05-13 2022-03-31 13F MCKESSON COM 58155Q103 12,249 20 0.16 3,750 23.36 0.0131
2022-02-14 2021-12-31 13F MCKESSON COM 58155Q103 12,229 10,206 504.50 3,040 654.34 0.0095
2021-11-12 2021-09-30 13F MCKESSON COM 58155Q103 2,023 41 2.07 403 6.33 0.0014
2021-08-12 2021-06-30 13F MCKESSON COM 58155Q103 1,982 -563 -22.12 379 -23.59 0.0013
2021-05-13 2021-03-31 13F MCKESSON COM 58155Q103 2,545 54 2.17 496 14.55 0.0019
2021-02-09 2020-12-31 13F MCKESSON COM 58155Q103 2,491 490 24.49 433 45.30 0.0016
2020-11-06 2020-09-30 13F MCKESSON COM 58155Q103 2,001 -1,331 -39.95 298 -41.68 0.0013
2020-08-12 2020-06-30 13F MCKESSON COM 58155Q103 3,332 1,801 117.64 511 146.86 0.0024
2020-05-11 2020-03-31 13F MCKESSON COM 58155Q103 1,531 -1,308 -46.07 207 -47.33 0.0013
2020-02-13 2019-12-31 13F MCKESSON COM 58155Q103 2,839 491 20.91 393 22.43 0.0020
2019-11-12 2019-09-30 13F MCKESSON COM 58155Q103 2,348 702 42.65 321 45.25 0.0018
2019-08-13 2019-06-30 13F MCKESSON COM 58155Q103 1,646 -771 -31.90 221 -21.91 0.0013
2019-05-14 2019-03-31 13F MCKESSON COM 58155Q103 2,417 316 15.04 283 21.98 0.0017
2019-02-14 2018-12-31 13F MCKESSON COM 58155Q103 2,101 -3,074 -59.40 232 -66.18 0.0017
2018-11-13 2018-09-30 13F MCKESSON COM 58155Q103 5,175 -95 -1.80 686 -2.42 0.0042
2018-08-13 2018-06-30 13F MCKESSON COM 58155Q103 5,270 34 0.65 703 -4.74 0.0048
2018-05-15 2018-03-31 13F MCKESSON COM 58155Q103 5,236 655 14.30 738 3.36 0.0052
2018-02-14 2017-12-31 13F MCKESSON COM 58155Q103 4,581 -205 -4.28 714 -2.86 0.0048
2017-11-13 2017-09-30 13F MCKESSON COM 58155Q103 4,786 484 11.25 735 3.81 0.0055
2017-08-04 2017-06-30 13F MCKESSON COM 58155Q103 4,302 180 4.37 708 14.38 0.0053
2017-05-10 2017-03-31 13F MCKESSON COM 58155Q103 4,122 -5,270 -56.11 619 -53.07 0.0050
2017-02-14 2016-12-31 13F MCKESSON COM 58155Q103 9,392 -2,650 -22.01 1,319 -34.31 0.0118
2016-11-14 2016-09-30 13F MCKESSON COM 58155Q103 12,042 536 4.66 2,008 -6.52 0.0177
2016-08-08 2016-06-30 13F MCKESSON COM 58155Q103 11,506 -7,178 -38.42 2,148 -26.86 0.0200
2016-05-16 2016-03-31 13F MCKESSON COM 58155Q103 18,684 675 3.75 2,937 -17.29 0.0276
2016-02-16 2015-12-31 13F MCKESSON COM 58155Q103 18,009 503 2.87 3,551 9.63 0.0333
2015-11-12 2015-09-30 13F MCKESSON COM 58155Q103 17,506 -897 -4.87 3,239 -21.69 0.0280
2015-08-03 2015-06-30 13F MCKESSON COM 58155Q103 18,403 424 2.36 4,136 1.72 0.0062
2015-05-11 2015-03-31 13F MCKESSON COM 58155Q103 17,979 17,979 0.00 4,066 0.0063
2015-02-05 2014-12-31 13F MCKESSON COM 58155Q103 0 -18,458 -100.00 0 -100.00
2014-11-04 2014-09-30 13F MCKESSON COM 58155Q103 18,458 6,860 59.15 3,592 66.37 0.0061
2014-08-01 2014-06-30 13F MCKESSON COM 58155Q103 11,598 -764 -6.18 2,159 -1.05 0.0035
2014-05-06 2014-03-31 13F MCKESSON COM 58155Q103 12,362 -384 -3.01 2,182 6.08 0.0036
2014-02-11 2013-12-31 13F MCKESSON COM 58155Q103 12,746 -1,239 -8.86 2,057 14.66 0.0034
2013-11-12 2013-09-30 13F MCKESSON COM 58155Q103 13,985 4,393 45.80 1,794 63.39 0.0032
2013-08-07 2013-06-30 13F MCKESSON COM 58155Q103 9,592 9,592 1,098 0.0022
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.