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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
MASI
1051
DELISTED
Masimo
MASI
$488K ﹤0.01%
+2,646
New +$446K
FWONK icon
1052
Liberty Media Series C
FWONK
$26B
$487K ﹤0.01%
6,732
+109
+2% +$7.37K
TASK icon
1053
TaskUs
TASK
$667M
$486K ﹤0.01%
33,631
-2,970
-8% -$51.7K
BSX icon
1054
Boston Scientific
BSX
$74.9B
$485K ﹤0.01%
9,704
-305
-3% -$14.4K
PAAS icon
1055
Pan American Silver
PAAS
$19.9B
$483K ﹤0.01%
26,554
-3,753
-12% -$64.5K
FBIN icon
1056
Fortune Brands Innovations
FBIN
$5.78B
$481K ﹤0.01%
7,772
+1
+0% +$61
GEF icon
1057
Greif
GEF
$5.03B
$481K ﹤0.01%
7,592
-200
-3% -$13.4K
ICSH icon
1058
iShares Ultra Short Duration Bond Active ETF
ICSH
$8.4B
$480K ﹤0.01%
9,559
– –
MRTN icon
1059
Marten Transport
MRTN
$1.24B
$478K ﹤0.01%
22,800
– –
XT icon
1060
iShares Future Exponential Technologies ETF
XT
$4.01B
$477K ﹤0.01%
9,055
– –
TTD icon
1061
Trade Desk
TTD
$6.84B
$476K ﹤0.01%
7,821
+41
+0.5% +$2.18K
RILY icon
1062
BRC Group Holdings
RILY
$303M
$475K ﹤0.01%
16,744
-4,768
-22% -$181K
W icon
1063
Wayfair
W
$13.9B
$475K ﹤0.01%
13,840
-1,793
-11% -$79.4K
SPYV icon
1064
State Street SPDR Portfolio S&P 500 Value ETF
SPYV
$36.8B
$471K ﹤0.01%
11,556
-460
-4% -$18.6K
UUP icon
1065
Invesco DB US Dollar Index Bullish Fund
UUP
$414M
$468K ﹤0.01%
16,776
+4,150
+33% +$116K
CTRA
1066
DELISTED
Coterra Energy
CTRA
$466K ﹤0.01%
18,970
+2,937
+18% +$72.2K
LAMR icon
1067
Lamar Advertising Co
LAMR
$15.8B
$465K ﹤0.01%
4,651
+520
+13% +$52.8K
OGN icon
1068
Organon & Co
OGN
$3.6B
$464K ﹤0.01%
19,736
-18,042
-48% -$484K
UEC icon
1069
Uranium Energy
UEC
$5.54B
$462K ﹤0.01%
160,500
– –
VLD
1070
DELISTED
Velo3D, Inc.
VLD
$459K ﹤0.01%
5,779
+257
+5% +$23.1K
STIM icon
1071
Neuronetics
STIM
$211M
$459K ﹤0.01%
157,721
-15,775
-9% -$79.5K
GMED icon
1072
Globus Medical
GMED
$11.5B
$458K ﹤0.01%
8,085
-3,415
-30% -$219K
BF.B icon
1073
Brown-Forman Class B
BF.B
$12.9B
$456K ﹤0.01%
7,089
-246
-3% -$16K
CG icon
1074
Carlyle Group
CG
$18.3B
$455K ﹤0.01%
14,661
+1,425
+11% +$47.5K
BNS icon
1075
Scotiabank
BNS
$111B
$453K ﹤0.01%
8,996
+827
+10% +$42.4K
41 42
43
44 45

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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.