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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
CORZW icon
1001
Core Scientific Inc Tranche 1 Warrants
CORZW
$1.29B
$674K ﹤0.01%
+506,633
New +$752K
PJUL icon
1002
Innovator US Equity Power Buffer ETF July
PJUL
$1.29B
$672K ﹤0.01%
17,697
– –
DCI icon
1003
Donaldson
DCI
$11.1B
$672K ﹤0.01%
8,996
-34
-0.4% -$2.31K
ONB icon
1004
Old National Bancorp
ONB
$10.4B
$669K ﹤0.01%
38,439
+116
+0.3% +$1.92K
LGND icon
1005
Ligand Pharmaceuticals
LGND
$5.76B
$669K ﹤0.01%
9,145
-11
-0.1% -$811
IYH icon
1006
iShares US Healthcare ETF
IYH
$3.77B
$666K ﹤0.01%
10,761
+1
+0% +$60
NI icon
1007
NiSource
NI
$20.2B
$663K ﹤0.01%
23,981
-428
-2% -$11.3K
LII icon
1008
Lennox International
LII
$14.5B
$657K ﹤0.01%
1,344
-62
-4% -$28.2K
QQQM icon
1009
Invesco NASDAQ 100 ETF
QQQM
$104B
$655K ﹤0.01%
3,583
+3,463
+2,886% +$611K
SCHE icon
1010
Schwab Emerging Markets Equity ETF
SCHE
$12.9B
$654K ﹤0.01%
25,917
+312
+1% +$7.67K
RVTY icon
1011
Revvity
RVTY
$13.1B
$653K ﹤0.01%
6,217
-25
-0.4% -$2.66K
EYE icon
1012
National Vision
EYE
$1.51B
$648K ﹤0.01%
29,257
-4,334
-13% -$91.4K
LVS icon
1013
Las Vegas Sands
LVS
$29.6B
$648K ﹤0.01%
12,537
-2,041
-14% -$105K
VNT icon
1014
Vontier
VNT
$4.47B
$647K ﹤0.01%
14,268
-415
-3% -$16.2K
EPP icon
1015
iShares MSCI Pacific ex Japan ETF
EPP
$2.24B
$647K ﹤0.01%
15,104
– –
SHM icon
1016
State Street SPDR Nuveen ICE Short Term Municipal Bond ETF
SHM
$3.48B
$646K ﹤0.01%
13,616
-2,069
-13% -$98.5K
BECN
1017
DELISTED
Beacon Roofing Supply, Inc.
BECN
$644K ﹤0.01%
+6,575
New +$571K
BIL icon
1018
State Street SPDR Bloomberg 1-3 Month T-Bill ETF
BIL
$46.7B
$644K ﹤0.01%
7,017
+2,428
+53% +$222K
XIFR
1019
XPLR Infrastructure LP
XIFR
$1.09B
$643K ﹤0.01%
21,390
+6,378
+42% +$182K
EUSA icon
1020
iShares MSCI USA Equal Weighted ETF
EUSA
$1.96B
$643K ﹤0.01%
7,064
+10
+0.1% +$861
LFMD icon
1021
LifeMD
LFMD
$167M
$643K ﹤0.01%
+62,500
New +$462K
BURL icon
1022
Burlington
BURL
$22.4B
$642K ﹤0.01%
2,765
-2
-0.1% -$408
HIG icon
1023
Hartford Financial Services
HIG
$37.8B
$641K ﹤0.01%
6,216
+374
+6% +$34.3K
WRK
1024
DELISTED
WestRock Company
WRK
$637K ﹤0.01%
12,888
-1,880
-13% -$82.2K
IGV icon
1025
iShares Expanded Tech-Software Sector ETF
IGV
$15.2B
$637K ﹤0.01%
7,470
-185
-2% -$15.6K
39 40
41
42 43

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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.