William Blair & Company
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William Blair & Company’s McKesson MCK Stock Holding History

William Blair & Company’s Portfolio MCK Stock Details MCK Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$69.3M Buy
80,042
+51,170
+177% +$45.7M 0.2% 113
2025
Q4 		$23.7M Buy
28,872
+14,815
+105% +$12.1M 0.06% 214
2025
Q3 		$10.9M Buy
14,057
+1,565
+13% +$1.1M 0.03% 342
2025
Q2 		$9.15M Sell
12,492
-827
-6% -$584K 0.03% 365
2025
Q1 		$8.96M Sell
13,319
-509
-4% -$315K 0.03% 350
2024
Q4 		$7.88M Sell
13,828
-485
-3% -$272K 0.02% 387
2024
Q3 		$7.08M Sell
14,313
-275
-2% -$153K 0.02% 415
2024
Q2 		$8.52M Sell
14,588
-6,341
-30% -$3.53M 0.03% 354
2024
Q1 		$11.2M Sell
20,929
-444
-2% -$225K 0.04% 318
2023
Q4 		$9.9M Sell
21,373
-17
-0.1% -$7.73K 0.03% 321
2023
Q3 		$9.3M Buy
21,390
+257
+1% +$108K 0.04% 311
2023
Q2 		$9.03M Buy
21,133
+1,277
+6% +$491K 0.03% 329
2023
Q1 		$7.07M Sell
19,856
-141
-0.7% -$50.9K 0.03% 366
2022
Q4 		$7.5M Sell
19,997
-865
-4% -$323K 0.03% 344
2022
Q3 		$7.09M Buy
20,862
+6,514
+45% +$2.26M 0.03% 342
2022
Q2 		$4.68M Buy
14,348
+2,099
+17% +$672K 0.02% 433
2022
Q1 		$3.75M Buy
12,249
+20
+0.2% +$5.44K 0.01% 534
2021
Q4 		$3.04M Buy
12,229
+10,206
+504% +$2.24M 0.01% 614
2021
Q3 		$403K Buy
2,023
+41
+2% +$8.2K ﹤0.01% 1238
2021
Q2 		$379K Sell
1,982
-563
-22% -$109K ﹤0.01% 1257
2021
Q1 		$496K Buy
2,545
+54
+2% +$9.86K ﹤0.01% 1123
2020
Q4 		$433K Buy
2,491
+490
+24% +$81.6K ﹤0.01% 1129
2020
Q3 		$298K Sell
2,001
-1,331
-40% -$202K ﹤0.01% 1149
2020
Q2 		$511K Buy
3,332
+1,801
+118% +$260K ﹤0.01% 935
2020
Q1 		$207K Sell
1,531
-1,308
-46% -$192K ﹤0.01% 1158
2019
Q4 		$393K Buy
2,839
+491
+21% +$69.4K ﹤0.01% 1080
2019
Q3 		$321K Buy
2,348
+702
+43% +$99.6K ﹤0.01% 1090
2019
Q2 		$221K Sell
1,646
-771
-32% -$96.1K ﹤0.01% 1264
2019
Q1 		$283K Buy
2,417
+316
+15% +$39K ﹤0.01% 1164
2018
Q4 		$232K Sell
2,101
-3,074
-59% -$383K ﹤0.01% 1186
2018
Q3 		$686K Sell
5,175
-95
-2% -$12.4K ﹤0.01% 854
2018
Q2 		$703K Buy
5,270
+34
+0.6% +$4.97K ﹤0.01% 834
2018
Q1 		$738K Buy
5,236
+655
+14% +$102K 0.01% 794
2017
Q4 		$714K Sell
4,581
-205
-4% -$30.4K ﹤0.01% 850
2017
Q3 		$735K Buy
4,786
+484
+11% +$75.5K 0.01% 808
2017
Q2 		$708K Buy
4,302
+180
+4% +$27.3K 0.01% 859
2017
Q1 		$619K Sell
4,122
-5,270
-56% -$772K 0.01% 839
2016
Q4 		$1.32M Sell
9,392
-2,650
-22% -$390K 0.01% 588
2016
Q3 		$2.01M Buy
12,042
+536
+5% +$99.9K 0.02% 497
2016
Q2 		$2.15M Sell
11,506
-7,178
-38% -$1.26M 0.02% 463
2016
Q1 		$2.94M Buy
18,684
+675
+4% +$109K 0.03% 373
2015
Q4 		$3.55M Buy
18,009
+503
+3% +$95K 0.03% 348
2015
Q3 		$3.24M Sell
17,506
-897
-5% -$190K 0.03% 408
2015
Q2 		$4.14M Buy
18,403
+424
+2% +$98K 0.01% 1118
2015
Q1 		$4.07M Buy
17,979
+346
+2% +$76.7K 0.01% 1096
2014
Q4 		$3.66M Sell
17,633
-825
-4% -$168K 0.01% 1126
2014
Q3 		$3.59M Buy
18,458
+6,860
+59% +$1.32M 0.01% 1095
2014
Q2 		$2.16M Sell
11,598
-764
-6% -$136K ﹤0.01% 1219
2014
Q1 		$2.18M Sell
12,362
-384
-3% -$67.1K ﹤0.01% 1175
2013
Q4 		$2.06M Sell
12,746
-1,239
-9% -$190K ﹤0.01% 1171
2013
Q3 		$1.79M Buy
13,985
+4,393
+46% +$540K ﹤0.01% 1167
2013
Q2 		$1.1M Buy
+9,592
New +$1.07M ﹤0.01% 1239

Other funds holding MCK

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
Franklin Resources
Franklin Resources San Mateo, California $408B AUM 30.18% 1-Year Est. Return
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $298B AUM 21.96% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

William Blair & Company's MCK Position: Q1 2026 in Review

William Blair & Company increased its McKesson (MCK) stake by 177% in Q1 2026, buying an estimated $45.7M and bringing the position to 80,042 shares worth $69.3M. The position accounts for 0.2% of the portfolio, ranked #113.

William Blair & Company first reported a position in MCK in Q2 2013 and has held it in 52 quarters since. 2,034 funds tracked by Wall St. Rank hold MCK as of Q1 2026.

  • William Blair & Company held 80,042 shares of McKesson worth $69.3M as of Q1 2026.
  • William Blair & Company bought 51,170 McKesson shares in Q1 2026, an estimated $45.7M.
  • McKesson made up 0.2% of William Blair & Company's portfolio in Q1 2026, its #113 holding.
  • William Blair & Company first reported a position in McKesson in Q2 2013 and has held it in 52 quarters since.
  • 2,034 funds tracked by Wall St. Rank held McKesson as of Q1 2026.

Based on William Blair & Company's 13F filing for Q1 2026, filed 8 May 2026.