BLAIR WILLIAM & CO/IL

PrivateCIK: 902367

Location

CHICAGO, IL

1998

Positions

$38.39B

Total AUM (reported)

249.81M

Total Shares

Allocation by class

COM$23.40B60.9%

CL A$2.33B6.1%

CAP STK CL C$1.04B2.7%

COM CL A$873.10M2.3%

CAP STK CL A$858.62M2.2%

TR UNIT$633.29M1.6%

COM NEW$620.43M1.6%

Portfolio Concentration

Top 3$4.34B11.3%

4–10$5.76B15.0%

11–25$5.92B15.4%

Rest$22.36B58.3%

Top 3 weight

11.3%

Top 10 weight

26.3%

Voting Authority Distribution

Total shares with voting rights: 249.81M

Sole

Full voting authority

195.19M

% of voting shares78.1%

Shared

Joint voting authority

0.00

% of voting shares0.0%

None

No voting authority

54.62M

% of voting shares21.9%

Investment Discretion (by position count)

Sole1998

Shared0

Other0

Dominant voting typeSole · 78.1% of voting shares

Institutional Holdings1998

Rows:

APPLE INC

SOLE

COM

Shares5.73M

TypeSH

Market value$1.66B

4.32%

Sole

4.27M

Shared

0.00

None

1.46M

AMAZON COM INC

SOLE

COM

Shares5.88M

TypeSH

Market value$1.40B

3.65%

Sole

4.44M

Shared

0.00

None

1.43M

MICROSOFT CORP

SOLE

COM

Shares3.44M

TypeSH

Market value$1.28B

3.35%

Sole

2.67M

Shared

0.00

None

774.82K

NVIDIA CORPORATION

SOLE

COM

Shares5.37M

TypeSH

Market value$1.08B

2.80%

Sole

4.25M

Shared

0.00

None

1.12M

ALPHABET INC

SOLE

CAP STK CL C

Shares2.95M

TypeSH

Market value$1.04B

2.72%

Sole

2.45M

Shared

0.00

None

500.81K

ALPHABET INC

SOLE

CAP STK CL A

Shares2.40M

TypeSH

Market value$858.62M

2.24%

Sole

1.86M

Shared

0.00

None

546.31K

GE VERNOVA INC

SOLE

COM

Shares659.67K

TypeSH

Market value$775.02M

2.02%

Sole

520.65K

Shared

0.00

None

139.02K

JPMORGAN CHASE & CO

SOLE

COM

Shares2.27M

TypeSH

Market value$743.16M

1.94%

Sole

1.52M

Shared

0.00

None

755.01K

STATE STR SPDR S&P 500 ETF T

SOLE

TR UNIT

Shares848.03K

TypeSH

Market value$633.29M

1.65%

Sole

709K

Shared

0.00

None

139.03K

VISA INC

SOLE

COM CL A

Shares1.84M

TypeSH

Market value$631.84M

1.65%

Sole

1.53M

Shared

0.00

None

306.71K

COSTCO WHOLESALE CORPORATION

SOLE

COM

Shares524.69K

TypeSH

Market value$490.83M

1.28%

Sole

405.35K

Shared

0.00

None

119.34K

IDEXX LABS INC

SOLE

COM

Shares918.56K

TypeSH

Market value$483.56M

1.26%

Sole

762.22K

Shared

0.00

None

156.33K

AMPHENOL CORP

SOLE

CL A

Shares2.50M

TypeSH

Market value$441.58M

1.15%

Sole

2.17M

Shared

0.00

None

337.60K

MASTERCARD INCORPORATED

SOLE

CL A

Shares842.35K

TypeSH

Market value$432.63M

1.13%

Sole

666.68K

Shared

0.00

None

175.66K

INVESCO EXCHANGE TRADED FD T

SOLE

S&P500 EQL WGT

Shares1.98M

TypeSH

Market value$421.79M

1.10%

Sole

1.71M

Shared

0.00

None

271.39K

PALO ALTO NETWORKS INC

SOLE

COM

Shares1.23M

TypeSH

Market value$418.27M

1.09%

Sole

879.56K

Shared

0.00

None

346.96K

ELI LILLY & CO

SOLE

COM

Shares347.10K

TypeSH

Market value$416.32M

1.08%

Sole

249.36K

Shared

0.00

None

97.74K

META PLATFORMS INC

SOLE

CL A

Shares670.88K

TypeSH

Market value$377.90M

0.98%

Sole

547.75K

Shared

0.00

None

123.13K

VANGUARD INTL EQUITY INDEX F

SOLE

ALLWRLD EX US

Shares4.48M

TypeSH

Market value$375.13M

0.98%

Sole

3.98M

Shared

0.00

None

504.08K

MICRON TECHNOLOGY INC

SOLE

COM

Shares315.88K

TypeSH

Market value$364.62M

0.95%

Sole

272.07K

Shared

0.00

None

43.81K

ISHARES TR

SOLE

CORE S&P500 ETF

Shares484.70K

TypeSH

Market value$362.99M

0.95%

Sole

412.03K

Shared

0.00

None

72.68K

FASTENAL CO

SOLE

COM

Shares7.41M

TypeSH

Market value$355.76M

0.93%

Sole

4.59M

Shared

0.00

None

2.81M

BROADCOM INC

SOLE

COM

Shares929.72K

TypeSH

Market value$351.20M

0.91%

Sole

795.15K

Shared

0.00

None

134.57K

ABBVIE INC

SOLE

COM

Shares1.29M

TypeSH

Market value$324.08M

0.84%

Sole

1.04M

Shared

0.00

None

246.28K

VANGUARD TAX-MANAGED FDS

SOLE

VAN FTSE DEV MKT

Shares4.29M

TypeSH

Market value$305.74M

0.80%

Sole

3.84M

Shared

0.00

None

453.12K

Issuer	Class	Shares	Type	Value / Portfolio %	Voting — Sole	None
APPLE INCSOLE	COM	5.73M	SH	$1.66B 4.32%	4.27M	1.46M
AMAZON COM INCSOLE	COM	5.88M	SH	$1.40B 3.65%	4.44M	1.43M
MICROSOFT CORPSOLE	COM	3.44M	SH	$1.28B 3.35%	2.67M	774.82K
NVIDIA CORPORATIONSOLE	COM	5.37M	SH	$1.08B 2.80%	4.25M	1.12M
ALPHABET INCSOLE	CAP STK CL C	2.95M	SH	$1.04B 2.72%	2.45M	500.81K
ALPHABET INCSOLE	CAP STK CL A	2.40M	SH	$858.62M 2.24%	1.86M	546.31K
GE VERNOVA INCSOLE	COM	659.67K	SH	$775.02M 2.02%	520.65K	139.02K
JPMORGAN CHASE & COSOLE	COM	2.27M	SH	$743.16M 1.94%	1.52M	755.01K
STATE STR SPDR S&P 500 ETF TSOLE	TR UNIT	848.03K	SH	$633.29M 1.65%	709K	139.03K
VISA INCSOLE	COM CL A	1.84M	SH	$631.84M 1.65%	1.53M	306.71K
COSTCO WHOLESALE CORPORATIONSOLE	COM	524.69K	SH	$490.83M 1.28%	405.35K	119.34K
IDEXX LABS INCSOLE	COM	918.56K	SH	$483.56M 1.26%	762.22K	156.33K
AMPHENOL CORPSOLE	CL A	2.50M	SH	$441.58M 1.15%	2.17M	337.60K
MASTERCARD INCORPORATEDSOLE	CL A	842.35K	SH	$432.63M 1.13%	666.68K	175.66K
INVESCO EXCHANGE TRADED FD TSOLE	S&P500 EQL WGT	1.98M	SH	$421.79M 1.10%	1.71M	271.39K
PALO ALTO NETWORKS INCSOLE	COM	1.23M	SH	$418.27M 1.09%	879.56K	346.96K
ELI LILLY & COSOLE	COM	347.10K	SH	$416.32M 1.08%	249.36K	97.74K
META PLATFORMS INCSOLE	CL A	670.88K	SH	$377.90M 0.98%	547.75K	123.13K
VANGUARD INTL EQUITY INDEX FSOLE	ALLWRLD EX US	4.48M	SH	$375.13M 0.98%	3.98M	504.08K
MICRON TECHNOLOGY INCSOLE	COM	315.88K	SH	$364.62M 0.95%	272.07K	43.81K
ISHARES TRSOLE	CORE S&P500 ETF	484.70K	SH	$362.99M 0.95%	412.03K	72.68K
FASTENAL COSOLE	COM	7.41M	SH	$355.76M 0.93%	4.59M	2.81M
BROADCOM INCSOLE	COM	929.72K	SH	$351.20M 0.91%	795.15K	134.57K
ABBVIE INCSOLE	COM	1.29M	SH	$324.08M 0.84%	1.04M	246.28K
VANGUARD TAX-MANAGED FDSSOLE	VAN FTSE DEV MKT	4.29M	SH	$305.74M 0.80%	3.84M	453.12K

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