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William Blair & Company

William Blair & Company Portfolio holdings

AUM $38.4B
1-Year Est. Return 25.71%
This Fund
S&P 500
This Quarter Est. Return
-3.85%
1 Year Est. Return
+25.71%
3 Year Est. Return
+88.7%
5 Year Est. Return
+104.53%
10 Year Est. Return
+665.86%
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
85

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
MCHP icon
76
Microchip Technology
MCHP
$43.1B
$84.3M 0.32%
1,080,095
+30,159
+3% +$2.52M
META icon
77
Meta Platforms (Facebook)
META
$1.47T
$82M 0.31%
273,273
+19,633
+8% +$5.92M
TMO icon
78
Thermo Fisher Scientific
TMO
$223B
$78.6M 0.3%
155,288
+2,483
+2% +$1.32M
EVH icon
79
Evolent Health
EVH
$471M
$77.6M 0.3%
2,851,007
+399,884
+16% +$11.1M
FLYW icon
80
Flywire
FLYW
$2.12B
$77.6M 0.3%
2,432,155
+167,291
+7% +$5.35M
IUSV icon
81
iShares Core S&P US Value ETF
IUSV
$27.8B
$75.8M 0.29%
1,016,314
-884
-0.1% -$69.4K
PWSC
82
DELISTED
PowerSchool Holdings, Inc.
PWSC
$75M 0.29%
3,310,993
+248,612
+8% +$5.45M
MRK icon
83
Merck
MRK
$328B
$74.4M 0.29%
722,595
+4,288
+0.6% +$462K
SCHW
84
Charles Schwab
SCHW
$189B
$73.3M 0.28%
1,335,825
+238,399
+22% +$14.4M
ROL icon
85
Rollins
ROL
$17.6B
$72.6M 0.28%
1,944,226
+59,131
+3% +$2.39M
QQQ icon
86
Invesco QQQ Trust
QQQ
$481B
$71.5M 0.27%
199,661
+2,494
+1% +$925K
GWRE icon
87
Guidewire Software
GWRE
$14.4B
$70.8M 0.27%
786,939
-152,280
-16% -$12.7M
EW icon
88
Edwards Lifesciences
EW
$53.6B
$69.6M 0.27%
1,005,275
-56,394
-5% -$4.53M
ADP icon
89
Automatic Data Processing
ADP
$107B
$69.2M 0.27%
287,491
+740
+0.3% +$180K
SPLK
90
DELISTED
Splunk Inc
SPLK
$67.1M 0.26%
458,839
-45,724
-9% -$5.18M
SPGI icon
91
S&P Global
SPGI
$121B
$67.1M 0.26%
183,516
+4,999
+3% +$1.97M
LYV icon
92
Live Nation Entertainment
LYV
$43.2B
$67M 0.26%
806,938
-3,453
-0.4% -$301K
VOO icon
93
Vanguard S&P 500 ETF
VOO
$1.03T
$66.6M 0.26%
169,555
+7,999
+5% +$3.27M
KMX icon
94
CarMax
KMX
$8.33B
$66.6M 0.26%
940,931
-3,923
-0.4% -$321K
NEOG icon
95
Neogen
NEOG
$2.5B
$66.4M 0.25%
3,583,502
+217,419
+6% +$4.74M
BMY icon
96
Bristol-Myers Squibb
BMY
$130B
$65.5M 0.25%
1,128,568
-58,545
-5% -$3.59M
IWM icon
97
iShares Russell 2000 ETF
IWM
$82.2B
$65.1M 0.25%
368,147
+30,429
+9% +$5.71M
ORLY icon
98
O'Reilly Automotive
ORLY
$74.5B
$64.1M 0.25%
1,057,635
-26,565
-2% -$1.67M
XOM icon
99
ExxonMobil
XOM
$657B
$64M 0.25%
544,222
+16,852
+3% +$1.85M
USFR icon
100
WisdomTree Floating Rate Treasury Fund
USFR
$18.4B
$63.7M 0.24%
1,266,168
+11,266
+0.9% +$568K
2 3
4
5 6

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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 85 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 85 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.