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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
+10.07%
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
$31.8B
AUM Growth
+$2.49B
Cap. Flow
+$139M
Cap. Flow %
0.44%
Top 10 Hldgs %
23.43%
Holding
1,869
New
90
Increased
714
Reduced
722
Closed
82

Top Buys

Rank Stock Value
1
UBER icon
Uber
UBER
+$24.2M
2
IOT icon
Samsara
IOT
+$23.9M
3
PRCT icon
Procept Biorobotics
PRCT
+$20.5M
4
ISRG icon
Intuitive Surgical
ISRG
+$19.9M
5
AMZN icon
Amazon
AMZN
+$19.4M

Top Sells

Rank Stock Value
1
SPLK
Splunk Inc
SPLK
+$67.1M
2
MA icon
Mastercard
MA
+$65.4M
3
AON icon
Aon
AON
+$40.3M
4
FLYW icon
Flywire
FLYW
+$25.7M
5
DV icon
DoubleVerify
DV
+$19.5M

Sector Composition

Rank Sector Weight
1 Technology 25.75%
2 Healthcare 17.03%
3 Financials 12.35%
4 Industrials 11.88%
5 Consumer Discretionary 8.53%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
SLAB icon
1126
Silicon Laboratories
SLAB
$7.28B
$425K ﹤0.01%
2,956
-414
-12% -$54.9K
SHLS icon
1127
Shoals Technologies Group
SHLS
$1.37B
$424K ﹤0.01%
37,909
+17,064
+82% +$235K
PFG icon
1128
Principal Financial Group
PFG
$24.6B
$423K ﹤0.01%
4,905
+342
+7% +$27.4K
MRTN icon
1129
Marten Transport
MRTN
$1.24B
$423K ﹤0.01%
22,893
+93
+0.4% +$1.79K
UYG icon
1130
ProShares Ultra Financials
UYG
$863M
$422K ﹤0.01%
6,180
-600
-9% -$36.1K
RVLV icon
1131
Revolve Group
RVLV
$1.72B
$422K ﹤0.01%
19,925
-159
-0.8% -$2.79K
WFC.PRL icon
1132
Wells Fargo 7.5% Non Cumv Perp Conv
WFC.PRL
$4.66B
$417K ﹤0.01%
342
– –
ARW icon
1133
Arrow Electronics
ARW
$10.6B
$416K ﹤0.01%
3,217
+178
+6% +$20.8K
EMN icon
1134
Eastman Chemical
EMN
$8.43B
$416K ﹤0.01%
4,153
-374
-8% -$32.9K
HII icon
1135
Huntington Ingalls Industries
HII
$12.8B
$416K ﹤0.01%
1,427
+1
+0.1% +$275
INSM icon
1136
Insmed
INSM
$27.6B
$410K ﹤0.01%
15,099
+15
+0.1% +$420
PKG icon
1137
Packaging Corp of America
PKG
$22.9B
$409K ﹤0.01%
2,157
-3
-0.1% -$520
ACGL icon
1138
Arch Capital
ACGL
$33.5B
$408K ﹤0.01%
4,414
+286
+7% +$24.2K
TLTD icon
1139
FlexShares Morningstar Developed Markets ex-US Factor Tilt Index Fund
TLTD
$690M
$406K ﹤0.01%
5,664
-175
-3% -$12K
GNR icon
1140
State Street SPDR S&P Global Natural Resources ETF
GNR
$4.9B
$406K ﹤0.01%
7,002
-1,528
-18% -$83K
FCBC icon
1141
First Community Bankshares
FCBC
$933M
$405K ﹤0.01%
11,708
-400
-3% -$13.6K
WRB icon
1142
W.R. Berkley
WRB
$26.2B
$402K ﹤0.01%
6,816
-60
-0.9% -$3.25K
PNQI icon
1143
Invesco NASDAQ Internet ETF
PNQI
$544M
$401K ﹤0.01%
10,045
– –
HBNC icon
1144
Horizon Bancorp
HBNC
$1.05B
$400K ﹤0.01%
31,200
– –
VONG icon
1145
Vanguard Russell 1000 Growth ETF
VONG
$46.2B
$400K ﹤0.01%
4,617
+2,074
+82% +$172K
SMDV icon
1146
ProShares Russell 2000 Dividend Growers ETF
SMDV
$708M
$399K ﹤0.01%
6,235
– –
VRNS icon
1147
Varonis Systems
VRNS
$5.26B
$398K ﹤0.01%
8,445
-5,358
-39% -$255K
VOYA icon
1148
Voya Financial
VOYA
$9.16B
$398K ﹤0.01%
5,380
+272
+5% +$19.2K
ALKT icon
1149
Alkami Technology
ALKT
$2.22B
$397K ﹤0.01%
16,155
+5,460
+51% +$134K
IXN icon
1150
iShares Global Tech ETF
IXN
$9.47B
$397K ﹤0.01%
5,301
+30
+0.6% +$2.15K
44 45
46
47 48

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William Blair & Company's Q1 2024 Portfolio in Review

As of Q1 2024, William Blair & Company held 1,869 positions worth $31.8B, up 8.5% from $29.3B the previous quarter. Its ten largest holdings account for 23% of the portfolio.

William Blair & Company's Q1 2024 filing shows 90 new, 714 increased, 722 reduced and 82 closed positions. Its largest new stake was Procept Biorobotics: 429,793 shares worth $21.2M. The largest sale was Splunk Inc, an estimated $67.1M.

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

  • William Blair & Company's largest Q1 2024 buy was Procept Biorobotics: 429,793 shares worth $21.2M.
  • William Blair & Company added most to Uber in Q1 2024, an estimated $24.2M increase.
  • William Blair & Company's biggest Q1 2024 reduction was Mastercard, cutting an estimated $65.4M.
  • William Blair & Company fully exited Splunk Inc in Q1 2024, selling an estimated $67.1M.
  • William Blair & Company's ten largest holdings make up 23% of its $31.8B portfolio in Q1 2024.
  • William Blair & Company opened 90 new positions and closed 82 in Q1 2024.
  • William Blair & Company's portfolio value rose 8.5% quarter-over-quarter to $31.8B.

Based on William Blair & Company's 13F filing for Q1 2024, filed 9 May 2024.