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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
BHC icon
926
Bausch Health
BHC
$2.37B
$709K ﹤0.01%
87,520
-3,750
-4% -$30.1K
PEG icon
927
Public Service Enterprise Group
PEG
$37.8B
$705K ﹤0.01%
11,282
-278
-2% -$16.8K
VMW
928
DELISTED
VMware, Inc
VMW
$704K ﹤0.01%
5,636
-2,897
-34% -$348K
AYX
929
DELISTED
Alteryx Inc
AYX
$703K ﹤0.01%
11,943
-1,847
-13% -$108K
ADPT icon
930
Adaptive Biotechnologies
ADPT
$3.89B
$696K ﹤0.01%
78,864
+7,618
+11% +$67.2K
BAND
931
Bandwidth Inc
BAND
$1.74B
$696K ﹤0.01%
45,793
-2,384
-5% -$48K
HES
932
DELISTED
Hess
HES
$693K ﹤0.01%
5,238
+814
+18% +$113K
XLG icon
933
Invesco S&P 500 Top 50 ETF
XLG
$11B
$689K ﹤0.01%
22,190
+11,140
+101% +$327K
EPP icon
934
iShares MSCI Pacific ex Japan ETF
EPP
$2.24B
$689K ﹤0.01%
15,734
– –
ORI icon
935
Old Republic International
ORI
$10.3B
$687K ﹤0.01%
27,516
-28,336
-51% -$713K
MGTX icon
936
MeiraGTx Holdings
MGTX
$1.17B
$683K ﹤0.01%
132,133
– –
GKOS icon
937
Glaukos
GKOS
$11.2B
$680K ﹤0.01%
13,566
+44
+0.3% +$2.14K
ACHC icon
938
Acadia Healthcare
ACHC
$2.82B
$679K ﹤0.01%
9,393
-154
-2% -$12K
TWST icon
939
Twist Bioscience
TWST
$7.86B
$677K ﹤0.01%
44,904
-30,192
-40% -$667K
NI icon
940
NiSource
NI
$20.2B
$677K ﹤0.01%
24,206
+300
+1% +$8.21K
PSLV icon
941
Sprott Physical Silver Trust
PSLV
$13.3B
$676K ﹤0.01%
81,100
– –
GWX icon
942
State Street SPDR S&P International Small Cap ETF
GWX
$928M
$670K ﹤0.01%
21,627
+228
+1% +$7.03K
EVRG icon
943
Evergy
EVRG
$19.3B
$669K ﹤0.01%
10,945
– –
RAMP icon
944
LiveRamp
RAMP
$2.31B
$662K ﹤0.01%
30,177
-490
-2% -$11.7K
RCL icon
945
Royal Caribbean
RCL
$82.9B
$658K ﹤0.01%
10,071
-985
-9% -$65K
STAG icon
946
STAG Industrial
STAG
$7.12B
$658K ﹤0.01%
19,445
+7
+0% +$239
KEY icon
947
KeyCorp
KEY
$24.6B
$654K ﹤0.01%
52,270
-7,168
-12% -$121K
PLAY icon
948
Dave & Buster's
PLAY
$370M
$651K ﹤0.01%
17,695
-6,051
-25% -$241K
DCI icon
949
Donaldson
DCI
$11.1B
$650K ﹤0.01%
9,947
-1,700
-15% -$107K
SONO icon
950
Sonos
SONO
$1.96B
$650K ﹤0.01%
33,111
-1,171
-3% -$22.3K
36 37
38
39 40

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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.