William Blair & Company’s Comcast CMCSA Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q1
$3.82M Sell
133,103
-16,726
-11% -$501K 0.01% 566
2025
Q4
$4.48M Sell
149,829
-55,374
-27% -$1.58M 0.01% 547
2025
Q3
$6.45M Sell
205,203
-32,714
-14% -$1.1M 0.02% 459
2025
Q2
$8.49M Sell
237,917
-26,536
-10% -$918K 0.02% 380
2025
Q1
$9.76M Sell
264,453
-85,530
-24% -$3.09M 0.03% 332
2024
Q4
$13.1M Sell
349,983
-22,595
-6% -$938K 0.04% 302
2024
Q3
$15.6M Sell
372,578
-5,597
-1% -$221K 0.05% 273
2024
Q2
$14.8M Buy
378,175
+251,008
+197% +$9.82M 0.05% 263
2024
Q1
$5.51M Sell
127,167
-541
-0.4% -$23.3K 0.02% 459
2023
Q4
$5.6M Sell
127,708
-1,537
-1% -$65.9K 0.02% 434
2023
Q3
$5.73M Sell
129,245
-86,106
-40% -$3.84M 0.02% 407
2023
Q2
$8.95M Buy
215,351
+8,846
+4% +$351K 0.03% 331
2023
Q1
$7.83M Buy
206,505
+13,875
+7% +$525K 0.03% 352
2022
Q4
$6.74M Sell
192,630
-36,883
-16% -$1.22M 0.03% 368
2022
Q3
$6.73M Sell
229,513
-18,952
-8% -$709K 0.03% 357
2022
Q2
$9.75M Sell
248,465
-58,913
-19% -$2.53M 0.04% 300
2022
Q1
$14.4M Sell
307,378
-218,661
-42% -$10.5M 0.05% 272
2021
Q4
$26.5M Buy
526,039
+20,548
+4% +$1.07M 0.08% 210
2021
Q3
$28.3M Buy
505,491
+197
+0% +$11.5K 0.1% 185
2021
Q2
$28.8M Sell
505,294
-10,997
-2% -$615K 0.1% 183
2021
Q1
$27.9M Sell
516,291
-19,182
-4% -$1.01M 0.11% 176
2020
Q4
$28.1M Buy
535,473
+10,933
+2% +$524K 0.1% 174
2020
Q3
$24.3M Buy
524,540
+72,560
+16% +$3.15M 0.1% 173
2020
Q2
$17.6M Sell
451,980
-82,218
-15% -$3.13M 0.08% 197
2020
Q1
$18.4M Buy
534,198
+15,146
+3% +$639K 0.11% 165
2019
Q4
$23.3M Buy
519,052
+20,472
+4% +$911K 0.12% 176
2019
Q3
$22.5M Buy
498,580
+14,451
+3% +$640K 0.13% 162
2019
Q2
$20.5M Buy
484,129
+51,715
+12% +$2.18M 0.12% 172
2019
Q1
$17.3M Buy
432,414
+6,271
+1% +$236K 0.11% 184
2018
Q4
$14.5M Sell
426,143
-27,622
-6% -$1.01M 0.11% 185
2018
Q3
$16.1M Sell
453,765
-12,253
-3% -$434K 0.1% 195
2018
Q2
$15.3M Sell
466,018
-3,039
-0.6% -$99K 0.1% 189
2018
Q1
$16M Buy
469,057
+11,357
+2% +$441K 0.11% 176
2017
Q4
$18.3M Sell
457,700
-182,829
-29% -$6.87M 0.12% 175
2017
Q3
$24.6M Sell
640,529
-61,055
-9% -$2.41M 0.18% 132
2017
Q2
$27.3M Buy
701,584
+25,540
+4% +$1.01M 0.21% 121
2017
Q1
$25.3M Buy
676,044
+88,588
+15% +$3.29M 0.2% 125
2016
Q4
$20.3M Buy
587,456
+24,404
+4% +$815K 0.18% 139
2016
Q3
$18.7M Buy
563,052
+191,276
+51% +$6.37M 0.17% 157
2016
Q2
$12.1M Buy
371,776
+30,910
+9% +$960K 0.11% 189
2016
Q1
$10.4M Buy
340,866
+33,032
+11% +$948K 0.1% 192
2015
Q4
$8.69M Sell
307,834
-70,952
-19% -$2.14M 0.08% 221
2015
Q3
$10.8M Sell
378,786
-101,124
-21% -$3M 0.09% 212
2015
Q2
$14.4M Buy
479,910
+227,030
+90% +$6.67M 0.02% 766
2015
Q1
$7.14M Sell
252,880
-3,634
-1% -$104K 0.01% 938
2014
Q4
$7.44M Buy
256,514
+1,306
+0.5% +$35.8K 0.01% 934
2014
Q3
$6.86M Sell
255,208
-696
-0.3% -$19.1K 0.01% 949
2014
Q2
$6.87M Buy
255,904
+4,326
+2% +$111K 0.01% 934
2014
Q1
$6.29M Buy
251,578
+474
+0.2% +$12.3K 0.01% 924
2013
Q4
$6.52M Buy
251,104
+1,718
+0.7% +$41.4K 0.01% 881
2013
Q3
$5.63M Sell
249,386
-1,384
-0.6% -$30.1K 0.01% 871
2013
Q2
$5.24M Buy
+250,770
New +$5.18M 0.01% 867

Other funds holding CMCSA

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

William Blair & Company reduced its Comcast (CMCSA) stake by 11% in Q1 2026, selling an estimated $501K and leaving 133,103 shares worth $3.82M. The position accounts for 0.01% of the portfolio, ranked #566.

William Blair & Company first reported a position in CMCSA in Q2 2013 and has held it in 52 quarters since. The position peaked at $28.8M in Q2 2021. 2,045 funds tracked by Wall St. Rank hold CMCSA as of Q1 2026.

  • William Blair & Company held 133,103 shares of Comcast worth $3.82M as of Q1 2026.
  • William Blair & Company sold 16,726 Comcast shares in Q1 2026, an estimated $501K.
  • Comcast made up 0.01% of William Blair & Company's portfolio in Q1 2026, its #566 holding.
  • William Blair & Company first reported a position in Comcast in Q2 2013 and has held it in 52 quarters since.
  • William Blair & Company's Comcast position peaked at $28.8M in Q2 2021.
  • 2,045 funds tracked by Wall St. Rank held Comcast as of Q1 2026.

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