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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
FOXF icon
1801
Fox Factory Holding Corp
FOXF
$913M
– –
-4,581
Closed -$309K
FPE icon
1802
First Trust Preferred Securities and Income ETF
FPE
$6.33B
– –
-7,602
Closed -$128K
FSMB icon
1803
First Trust Short Duration Managed Municipal ETF
FSMB
$627M
– –
-3,614
Closed -$72.1K
FTI icon
1804
TechnipFMC
FTI
$29.5B
– –
-17,094
Closed -$344K
GBX icon
1805
The Greenbrier Companies
GBX
$1.41B
– –
-2,873
Closed -$127K
GEN icon
1806
Gen Digital
GEN
$17.1B
– –
-8,771
Closed -$200K
GFI icon
1807
Gold Fields
GFI
$36.4B
– –
-12,297
Closed -$178K
GIL icon
1808
Gildan
GIL
$10.6B
– –
-7,538
Closed -$249K
GLAD icon
1809
Gladstone Capital
GLAD
$444M
– –
-6,668
Closed -$143K
HACK icon
1810
Amplify Cybersecurity ETF
HACK
$3B
– –
-90,648
Closed -$5.48M
INSG icon
1811
Inseego
INSG
$82.6M
– –
-2,250
Closed -$4.95K
IPGP icon
1812
IPG Photonics
IPGP
$3.71B
– –
-2,515
Closed -$273K
KBWY icon
1813
Invesco KBW Premium Yield Equity REIT ETF
KBWY
$307M
– –
-1,276
Closed -$25.8K
KLG
1814
DELISTED
WK Kellogg Co
KLG
– –
-10,481
Closed -$138K
LAKE icon
1815
Lakeland Industries
LAKE
$119M
– –
-17,469
Closed -$324K
LGIH icon
1816
LGI Homes
LGIH
$1.32B
– –
-1,591
Closed -$212K
MAN icon
1817
ManpowerGroup
MAN
$2.61B
– –
-4,330
Closed -$344K
MJ icon
1818
Amplify Alternative Harvest ETF
MJ
$111M
– –
-39
Closed -$1.5K
MKTX icon
1819
MarketAxess Holdings
MKTX
$5.72B
– –
-955
Closed -$280K
MMI icon
1820
Marcus & Millichap
MMI
$1.18B
– –
-5,644
Closed -$247K
MORT icon
1821
VanEck Mortgage REIT Income ETF
MORT
$373M
– –
-1,500
Closed -$17.7K
MTX icon
1822
Minerals Technologies
MTX
$2.25B
– –
-5,710
Closed -$407K
NBHC icon
1823
National Bank Holdings
NBHC
$1.92B
– –
-6,250
Closed -$232K
NSSC icon
1824
Napco Security Technologies
NSSC
$1.39B
– –
-13,486
Closed -$462K
OPEN icon
1825
Opendoor
OPEN
$3.39B
– –
-11,707
Closed -$50.8K
71 72
73
74 75

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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.