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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
+10.3%
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
$25B
AUM Growth
+$2.04B
Cap. Flow
+$116M
Cap. Flow %
0.46%
Top 10 Hldgs %
23.68%
Holding
1,879
New
69
Increased
680
Reduced
748
Closed
78

Top Buys

Rank Stock Value
1
NEOG icon
Neogen
NEOG
+$45.2M
2
PGR icon
Progressive
PGR
+$34.8M
3
TOST icon
Toast
TOST
+$33.8M
4
PWSC
PowerSchool Holdings, Inc.
PWSC
+$33.4M
5
UBER icon
Uber
UBER
+$30.4M

Top Sells

Rank Stock Value
1
GOOG icon
Alphabet (Google) Class C
GOOG
+$54.2M
2
LULU icon
lululemon athletica
LULU
+$53.4M
3
PYPL icon
PayPal
PYPL
+$45.8M
4
BAH icon
Booz Allen Hamilton
BAH
+$20.2M
5
GOOGL icon
Alphabet (Google) Class A
GOOGL
+$17.8M

Sector Composition

Rank Sector Weight
1 Technology 24.61%
2 Healthcare 19.42%
3 Financials 11.75%
4 Industrials 11.37%
5 Consumer Discretionary 8.4%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
UBER icon
76
Uber
UBER
$154B
$77.5M 0.31%
2,445,315
+957,586
+64% +$30.4M
ABNB icon
77
Airbnb
ABNB
$108B
$77.1M 0.31%
619,798
+138
+0% +$15.8K
ISRG icon
78
Intuitive Surgical
ISRG
$142B
$76.9M 0.31%
301,198
+20,097
+7% +$4.95M
VRSK icon
79
Verisk Analytics
VRSK
$23.5B
$76.9M 0.31%
400,581
-9,597
-2% -$1.74M
EVH icon
80
Evolent Health
EVH
$471M
$76.2M 0.3%
2,348,583
-22,776
-1% -$720K
MRK icon
81
Merck
MRK
$328B
$74.7M 0.3%
701,872
+6,275
+0.9% +$677K
IUSV icon
82
iShares Core S&P US Value ETF
IUSV
$27.8B
$74.5M 0.3%
1,009,554
-9,523
-0.9% -$701K
RMD icon
83
ResMed
RMD
$32.8B
$74.1M 0.3%
338,329
-861
-0.3% -$187K
ROL icon
84
Rollins
ROL
$17.6B
$70.6M 0.28%
1,880,987
-22,690
-1% -$818K
CMG icon
85
Chipotle Mexican Grill
CMG
$41.3B
$68.7M 0.27%
2,011,900
-18,450
-0.9% -$580K
FLYW icon
86
Flywire
FLYW
$2.12B
$65.9M 0.26%
2,242,883
+417,454
+23% +$11M
USFR icon
87
WisdomTree Floating Rate Treasury Fund
USFR
$18.4B
$65.8M 0.26%
1,309,176
+188,056
+17% +$9.46M
IBM icon
88
IBM
IBM
$222B
$65.5M 0.26%
500,025
-4,932
-1% -$660K
ADP icon
89
Automatic Data Processing
ADP
$107B
$64.6M 0.26%
290,148
-12,305
-4% -$2.78M
EFA icon
90
iShares MSCI EAFE ETF
EFA
$80.2B
$64.4M 0.26%
900,899
+160,203
+22% +$11.2M
LYV icon
91
Live Nation Entertainment
LYV
$43.2B
$63.9M 0.26%
912,635
+38,798
+4% +$2.84M
ORLY icon
92
O'Reilly Automotive
ORLY
$74.5B
$63.4M 0.25%
1,119,600
-52,515
-4% -$2.88M
QQQ icon
93
Invesco QQQ Trust
QQQ
$481B
$63.3M 0.25%
197,351
-10,810
-5% -$3.19M
SPGI icon
94
S&P Global
SPGI
$121B
$62.1M 0.25%
180,262
+1,707
+1% +$601K
MKC icon
95
McCormick & Company Non-Voting
MKC
$14.2B
$60.2M 0.24%
723,292
+3,950
+0.5% +$301K
DIS icon
96
Walt Disney
DIS
$178B
$59.5M 0.24%
594,601
-15,985
-3% -$1.61M
PWSC
97
DELISTED
PowerSchool Holdings, Inc.
PWSC
$59.1M 0.24%
2,981,738
+1,526,052
+105% +$33.4M
ALGN icon
98
Align Technology
ALGN
$12.4B
$58.6M 0.23%
175,480
-24,405
-12% -$7.2M
MDB icon
99
MongoDB
MDB
$35.2B
$57.8M 0.23%
247,731
+71,273
+40% +$15M
BA icon
100
Boeing
BA
$183B
$57.3M 0.23%
269,960
+16,379
+6% +$3.4M
2 3
4
5 6

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William Blair & Company's Q1 2023 Portfolio in Review

As of Q1 2023, William Blair & Company held 1,879 positions worth $25B, up 8.9% from $23B the previous quarter. Its ten largest holdings account for 24% of the portfolio.

William Blair & Company's Q1 2023 filing shows 69 new, 680 increased, 748 reduced and 78 closed positions. Its largest new stake was Neogen: 2,404,277 shares worth $44.5M. The largest sale was Alphabet (Google) Class C, an estimated $54.2M.

By sector, the portfolio is most concentrated in Technology at 25% of assets, up from 22% a quarter earlier, followed by Healthcare and Financials.

  • William Blair & Company's largest Q1 2023 buy was Neogen: 2,404,277 shares worth $44.5M.
  • William Blair & Company added most to Progressive in Q1 2023, an estimated $34.8M increase.
  • William Blair & Company's biggest Q1 2023 reduction was Alphabet (Google) Class C, cutting an estimated $54.2M.
  • William Blair & Company fully exited Coupa Software Incorporated in Q1 2023, selling an estimated $2.65M.
  • William Blair & Company's ten largest holdings make up 24% of its $25B portfolio in Q1 2023.
  • William Blair & Company opened 69 new positions and closed 78 in Q1 2023.
  • William Blair & Company's portfolio value rose 8.9% quarter-over-quarter to $25B.

Based on William Blair & Company's 13F filing for Q1 2023, filed 12 May 2023.