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William Blair Investment Management, LLC

Portfolio Profile

CIK: 0001644956 | CHICAGO, IL

Investment Profile

Style

Core

Turnover

Medium

Orientation

Concentrated trader
$33.3B
AUM
403
Positions
28.95%
Top 10 Conc.
40.96%
Top 25 Conc.

Top Holdings

#SecuritySharesValue% of Portfolio
1Taiwan Semiconductor Manufac(TSM)4,936,408$2.4B7.09%
2Nvidia Corporation(NVDA)8,599,021$1.7B5.17%
3Alphabet Inc(GOOGL)3,191,012$1.1B3.43%
4Apple Inc(AAPL)3,259,914$943.3M2.84%
5Broadcom Inc(AVGO)2,056,135$776.7M2.34%
6

Sector Allocation

Latest filing, equity positions only

Technology36.73% · $12.2B
Healthcare13.18% · $4.4B
Industrials11.99% · $4.0B
Financial Services8.09% · $2.7B
Consumer Cyclical7.59% · $2.5B
Unclassified6.64% · $2.2B
Communication Services5.29% · $1.8B

AUM History

$30.1B | 398 pos.
$34.4B | 406 pos.
$38.7B | 410 pos.
$38.1B | 411 pos.
$40.5B | 412 pos.
$40.9B | 433 pos.
Microsoft Corp(MSFT)
2,048,642
$764.2M
2.30%
7Meta Platforms Inc(META)950,115$535.2M1.61%
8Amazon COM Inc(AMZN)1,987,085$473.6M1.42%
9Mastercard Incorporated(MA)918,005$471.5M1.42%
10Advanced Micro Devices Inc(AMD)763,517$443.5M1.33%
Consumer Defensive3.8% · $1.3B
Basic Materials2.49% · $829.5M
Energy2.32% · $771.6M
Utilities0.94% · $313.2M
Real Estate0.94% · $312.8M

Sector Rotation

Quarter-over-quarter weight changes

SectorPrev %Curr %Change
Consumer Cyclical9.53%7.59%-1.94%
Technology35.74%36.73%+0.99%
Financial Services9.08%8.09%-0.99%
Communication Services4.43%5.29%+0.86%
Healthcare12.42%13.18%+0.76%
Industrials11.23%11.99%+0.76%
Energy1.72%2.32%+0.6%
Consumer Defensive4.22%3.8%-0.42%
Real Estate1.36%0.94%-0.42%
Utilities1.05%0.94%-0.11%
Basic Materials2.58%2.49%-0.09%
Unclassified6.65%6.64%-0.01%

Cap Size Rotation

Quarter-over-quarter weight changes by market cap

Cap SizePrev %Curr %Change
Mega Cap33.35%33.49%+0.14%
Large Cap30.6%29.35%-1.25%
Mid Cap25.67%27.52%+1.85%
Unclassified6.65%6.64%-0.01%
Small Cap3.7%3%-0.7%
Micro Cap0.02%0%-0.02%
$35.6B | 423 pos.
$37.7B | 417 pos.
$38.7B | 414 pos.
$35.9B | 413 pos.
$30.3B | 413 pos.
$33.3B | 403 pos.
Q3
23
Q4
23
Q1
24
Q2
24
Q3
24
Q4
24
Q1
25
Q2
25
Q3
25
Q4
25
Q1
26
Q2
26

Recent Activity

Quarter-over-quarter position changes

46
New
56
Closed
119
Increased
231
Decreased
7
Unchanged