BLAIR WILLIAM & CO/IL

CIK
0000902367
City
Chicago
State / Country
IL

Top Portfolio Positions

1,033 positions · $30,375,950,295 total · as of Dec 31, 2025
Ticker Company Shares Value (USD) % of Portfolio
MSFT
Microsoft Corp
Technology
3,574,568 $1,728,732,575 5.69%
AAPL
Apple Inc.
Technology
5,949,948 $1,617,552,862 5.33%
AMZN
Amazon Com Inc
Consumer Cyclical
6,064,424 $1,399,790,347 4.61%
NVDA
Nvidia Corp
Technology
5,494,350 $1,024,696,275 3.37%
GOOGL
Alphabet Inc.
Communication Services
2,493,580 $780,490,540 2.57%
JPM
Jpmorgan Chase & Co
Financial Services
2,309,809 $744,266,655 2.45%
IDXX
Idexx Laboratories Inc /De
Healthcare
1,001,375 $677,460,228 2.23%
V
Visa Inc.
Financial Services
1,929,237 $676,602,708 2.23%
SPY
Spdr S&P 500 Etf Trust
857,803 $584,953,021 1.93%
MA
Mastercard Inc
Financial Services
955,188 $545,297,725 1.80%

Portfolio Trend

24 quarters · across all stocks

Holdings in APH

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Shares Held

Position Value (USD)

24 of 24 shown
Report Date Value (USD) Shares
2025-12-31 $358,646,829 2,653,891
2025-09-30 $340,499,857 2,751,514
2025-06-30 $293,430,490 2,971,448
2025-03-31 $198,563,886 3,027,350
2024-12-31 $213,224,973 3,070,194
2024-09-30 $201,519,680 3,092,690
2024-06-30 $211,035,447 3,132,484
2024-03-31 $88,610,370 1,536,374
2023-12-31 $75,939,775 1,532,125
2023-09-30 $64,872,616 1,544,770
2023-06-30 $65,598,644 1,544,406
2023-03-31 $62,671,027 1,533,799
2022-12-31 $58,301,387 1,531,426
2022-09-30 $50,782,196 1,516,792
2022-06-30 $49,059,716 1,524,067
2022-03-31 $57,712,712 1,531,857
2021-12-31 $67,268,109 1,538,260
2021-09-30 $55,845,893 1,525,219
2021-06-30 $52,647,583 1,539,178
2021-03-31 $51,579,337 1,563,721
2020-12-31 $26,166,553 800,384
2020-09-30 $20,958,744 774,314
2020-06-30 $19,048,441 795,259
2020-03-31 $14,432,317 792,114