We are live on ! Find out more
William Blair & Company

William Blair & Company Portfolio holdings

AUM $34.9B
1-Year Est. Return 18.88%
This Fund
S&P 500
This Quarter Est. Return
-3.85%
1 Year Est. Return
+18.88%
3 Year Est. Return
+73.84%
5 Year Est. Return
+90.13%
10 Year Est. Return
+512.03%
AUM
$26.1B
AUM Growth
-$1.22B
Cap. Flow
+$114M
Cap. Flow %
0.44%
Top 10 Hldgs %
23.71%
Holding
1,877
New
67
Increased
674
Reduced
719
Closed
86

Top Buys

Rank Stock Value
1
KVUE icon
Kenvue
KVUE
+$32.2M
2
LZ icon
LegalZoom.com
LZ
+$26.6M
3
CRWD icon
CrowdStrike
CRWD
+$24M
4
CSGP icon
CoStar Group
CSGP
+$20.8M
5
GNRC icon
Generac Holdings
GNRC
+$18.3M

Top Sells

Rank Stock Value
1
AAPL icon
Apple
AAPL
+$37.6M
2
PODD icon
Insulet
PODD
+$37.3M
3
NVDA icon
NVIDIA
NVDA
+$24.8M
4
ATVI
Activision Blizzard
ATVI
+$20.6M
5
SBUX icon
Starbucks
SBUX
+$17.8M

Sector Composition

Rank Sector Weight
1 Technology 25.36%
2 Healthcare 17.61%
3 Financials 12.07%
4 Industrials 11.66%
5 Consumer Discretionary 8.39%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
MSFT icon
1
Microsoft
MSFT
$2.93T
$1.15B 4.41%
3,644,707
-32,166
-0.9% -$10.6M
AAPL icon
2
Apple
AAPL
$4.99T
$1.07B 4.1%
6,249,794
-205,229
-3% -$37.6M
AMZN icon
3
Amazon
AMZN
$2.45T
$733M 2.81%
5,764,104
+63,916
+1% +$8.56M
IDXX icon
4
Idexx Laboratories
IDXX
$44.9B
$525M 2.01%
1,199,945
+7,812
+0.7% +$3.9M
V icon
5
Visa
V
$707B
$507M 1.95%
2,204,975
-1,410
-0.1% -$339K
MA icon
6
Mastercard
MA
$501B
$476M 1.83%
1,202,061
+2,144
+0.2% +$861K
GOOG icon
7
Alphabet (Google) Class C
GOOG
$4.07T
$461M 1.77%
3,495,785
-28,538
-0.8% -$3.71M
ZTS icon
8
Zoetis
ZTS
$33B
$423M 1.62%
2,428,509
+32,918
+1% +$5.98M
DXCM icon
9
DexCom
DXCM
$29.3B
$421M 1.61%
4,507,153
+73,654
+2% +$8.3M
DHR icon
10
Danaher
DHR
$141B
$418M 1.6%
1,901,249
+26,375
+1% +$5.88M
ADBE icon
11
Adobe
ADBE
$104B
$348M 1.33%
682,209
+10,914
+2% +$5.73M
WDAY icon
12
Workday
WDAY
$41B
$339M 1.3%
1,578,594
+5,290
+0.3% +$1.23M
GOOGL icon
13
Alphabet (Google) Class A
GOOGL
$4.09T
$325M 1.25%
2,487,205
+2,684
+0.1% +$347K
CSGP icon
14
CoStar Group
CSGP
$12B
$322M 1.24%
4,191,009
+251,182
+6% +$20.8M
COST icon
15
Costco
COST
$431B
$318M 1.22%
562,827
+7,548
+1% +$4.17M
JPM icon
16
JPMorgan Chase
JPM
$931B
$315M 1.21%
2,173,510
+43,479
+2% +$6.52M
SPY icon
17
State Street SPDR S&P 500 ETF Trust
SPY
$777B
$301M 1.16%
704,929
-12,802
-2% -$5.69M
VEEV icon
18
Veeva Systems
VEEV
$33.8B
$298M 1.14%
1,466,121
+12,709
+0.9% +$2.56M
WSO icon
19
Watsco Inc
WSO
$12.9B
$291M 1.12%
770,476
+4,997
+0.7% +$1.81M
POOL icon
20
Pool Corp
POOL
$7.04B
$277M 1.06%
777,707
+12,389
+2% +$4.51M
SYK icon
21
Stryker
SYK
$134B
$240M 0.92%
877,535
+2,376
+0.3% +$681K
AON icon
22
Aon
AON
$80.1B
$235M 0.9%
725,329
+6,145
+0.9% +$2.03M
CPRT icon
23
Copart
CPRT
$28.9B
$228M 0.88%
5,295,279
-44,187
-0.8% -$1.96M
INTU icon
24
Intuit
INTU
$90.2B
$224M 0.86%
437,563
+6,572
+2% +$3.33M
FISV
25
Fiserv Inc
FISV
$29.6B
$223M 0.86%
1,974,094
-15,204
-0.8% -$1.87M
1
2 3 4 5

Similar funds

SAM
Storebrand Asset Management Lysaker, Norway $34.8B AUM 25.49% 1-Year Est. Return
Daiwa Securities Group
Daiwa Securities Group Tokyo, Japan $34.8B AUM 20.7% 1-Year Est. Return
Chevy Chase Trust
Chevy Chase Trust Bethesda, Maryland $34.7B AUM 29.45% 1-Year Est. Return
VIA
Vanguard Investments Australia Victoria, Australia $34.6B AUM
Alyeska Investment Group
Alyeska Investment Group Chicago, Illinois $35.4B AUM 33.54% 1-Year Est. Return
Pacer Advisors
Pacer Advisors Malvern, Pennsylvania $35.6B AUM 18.19% 1-Year Est. Return
Parnassus Investments
Parnassus Investments San Francisco, California $34.1B AUM 20.22% 1-Year Est. Return
Kayne Anderson Rudnick Investment Management
Kayne Anderson Rudnick Investment Management Los Angeles, California $34B AUM 6.31% 1-Year Est. Return

William Blair & Company's Q3 2023 Portfolio in Review

As of Q3 2023, William Blair & Company held 1,877 positions worth $26.1B, down 4.5% from $27.3B the previous quarter. Its ten largest holdings account for 24% of the portfolio.

William Blair & Company's Q3 2023 filing shows 67 new, 674 increased, 719 reduced and 86 closed positions. Its largest new stake was Kenvue: 1,391,743 shares worth $27.9M. The largest sale was Apple, an estimated $37.6M.

By sector, the portfolio is most concentrated in Technology at 25% of assets, down from 26% a quarter earlier, followed by Healthcare and Financials.

  • William Blair & Company's largest Q3 2023 buy was Kenvue: 1,391,743 shares worth $27.9M.
  • William Blair & Company added most to LegalZoom.com in Q3 2023, an estimated $26.6M increase.
  • William Blair & Company's biggest Q3 2023 reduction was Apple, cutting an estimated $37.6M.
  • William Blair & Company fully exited Activision Blizzard in Q3 2023, selling an estimated $20.6M.
  • William Blair & Company's ten largest holdings make up 24% of its $26.1B portfolio in Q3 2023.
  • William Blair & Company opened 67 new positions and closed 86 in Q3 2023.
  • William Blair & Company's portfolio value fell 4.5% quarter-over-quarter to $26.1B.

Based on William Blair & Company's 13F filing for Q3 2023, filed 9 Nov 2023.