Blair William & Co/il

Investment Portfolio & 13F Holdings Analysis

About
CIK: 0000902367
Type: FundHoldings: 1,801Value: $33.2BLatest: 2025Q1

BLAIR WILLIAM & CO/IL is an institutional investment manager that filed its latest Form 13F for 2025Q1, reporting 1801 holdings worth $33.2 billion. Form 13F filings provide transparency into the equity holdings of institutional investment managers with over $100 million in assets under management. This page displays the most recent portfolio holdings, allowing investors to track position changes, new investments, and portfolio composition.

Filing Details

13F-HR2025-03-31
Report Date
2025-03-31
Filing Date
2025-05-09
Total Holdings
1,801
Total Value
33156792888
Accession Number
0001104659-25-046545
Form Type
13F-HR
Manager Name
Blair-William--Coil
Data Enrichment
68% identified
1,225 identified576 unidentified

Holdings

1,801 positions • $33.2B total value
Manager:
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Page 1 of 91
MICROSOFT CORP
Shares:3.8M
Value:$1.4B
% of Portfolio:4.3% ($1.4B/$33.2B)
Apple Inc.
Shares:6.2M
Value:$1.4B
% of Portfolio:4.1% ($1.4B/$33.2B)
AMAZON COM INC
Shares:6.2M
Value:$1.2B
% of Portfolio:3.5% ($1.2B/$33.2B)
VISA INC.
Shares:2.0M
Value:$713.8M
% of Portfolio:2.2% ($713.8M/$33.2B)
NVIDIA CORP
Shares:5.4M
Value:$583.1M
% of Portfolio:1.8% ($583.1M/$33.2B)
JPMORGAN CHASE & CO
Shares:2.3M
Value:$568.9M
% of Portfolio:1.7% ($568.9M/$33.2B)
Mastercard Inc
Shares:1.0M
Value:$559.5M
% of Portfolio:1.7% ($559.5M/$33.2B)
COSTCO WHOLESALE CORP /NEW
Shares:548.9K
Value:$519.1M
% of Portfolio:1.6% ($519.1M/$33.2B)
Alphabet Inc.
Shares:3.2M
Value:$502.4M
% of Portfolio:1.5% ($502.4M/$33.2B)
SPDR S&P 500 ETF TRUST
Shares:854.4K
Value:$477.9M
% of Portfolio:1.4% ($477.9M/$33.2B)
IDEXX LABORATORIES INC /DE
Shares:1.1M
Value:$458.1M
% of Portfolio:1.4% ($458.1M/$33.2B)
FISERV INC
Shares:2.0M
Value:$439.5M
% of Portfolio:1.3% ($439.5M/$33.2B)
PROGRESSIVE CORP/OH/
Shares:1.5M
Value:$431.0M
% of Portfolio:1.3% ($431.0M/$33.2B)
WATSCO INC
Shares:814.7K
Value:$414.1M
% of Portfolio:1.2% ($414.1M/$33.2B)
Alphabet Inc.
Shares:2.6M
Value:$399.6M
% of Portfolio:1.2% ($399.6M/$33.2B)
STRYKER CORP
Shares:926.4K
Value:$344.8M
% of Portfolio:1.0% ($344.8M/$33.2B)
Meta Platforms, Inc.
Shares:551.2K
Value:$317.7M
% of Portfolio:1.0% ($317.7M/$33.2B)
Zoetis Inc.
Shares:1.9M
Value:$311.6M
% of Portfolio:0.9% ($311.6M/$33.2B)
Uber Technologies, Inc
Shares:4.2M
Value:$309.6M
% of Portfolio:0.9% ($309.6M/$33.2B)
Intercontinental Exchange, Inc.
Shares:1.8M
Value:$306.1M
% of Portfolio:0.9% ($306.1M/$33.2B)