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William Blair Investment Management

William Blair Investment Management Portfolio holdings

AUM $30.3B
1-Year Est. Return 33.75%
This Fund
S&P 500
This Quarter Est. Return
+19.2%
1 Year Est. Return
+33.75%
3 Year Est. Return
+108.55%
5 Year Est. Return
+126.9%
10 Year Est. Return
+788.31%
AUM
$23.8B
AUM Growth
+$3.63B
Cap. Flow
+$288M
Cap. Flow %
1.21%
Top 10 Hldgs %
20.04%
Holding
441
New
37
Increased
142
Reduced
223
Closed
35

Top Buys

Rank Stock Value
1
CHKP icon
Check Point Software Technologies
CHKP
+$181M
2
BABA icon
Alibaba
BABA
+$124M
3
EWBC icon
East-West Bancorp
EWBC
+$109M
4
STE icon
Steris
STE
+$94.6M
5
BURL icon
Burlington
BURL
+$87.9M

Top Sells

Rank Stock Value
1
SIX
Six Flags Entertainment Corp.
SIX
+$151M
2
FTNT icon
Fortinet
FTNT
+$108M
3
SU icon
Suncor Energy
SU
+$77.7M
4
WST icon
West Pharmaceutical
WST
+$73.5M
5
WW
WW International
WW
+$59M

Sector Composition

Rank Sector Weight
1 Technology 17.21%
2 Consumer Discretionary 14.5%
3 Healthcare 14.2%
4 Industrials 13.82%
5 Financials 13.22%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
UNP icon
101
Union Pacific
UNP
$174B
$65.1M 0.27%
389,324
+1,336
+0.3% +$215K
INSP icon
102
Inspire Medical Systems
INSP
$1.71B
$62.2M 0.26%
1,096,095
+883,826
+416% +$47.8M
NUS icon
103
Nu Skin
NUS
$236M
$60.6M 0.26%
1,266,742
-24,724
-2% -$1.5M
QLYS icon
104
Qualys
QLYS
$6.51B
$59.6M 0.25%
+720,011
New +$59.9M
HD icon
105
Home Depot
HD
$353B
$58.5M 0.25%
304,831
+1,039
+0.3% +$191K
ACN icon
106
Accenture
ACN
$110B
$56.4M 0.24%
320,168
-7,463
-2% -$1.17M
LULU icon
107
lululemon athletica
LULU
$14.3B
$53.9M 0.23%
328,898
-232,752
-41% -$34M
WIX icon
108
WIX.com
WIX
$2.79B
$53.5M 0.23%
442,953
-16,753
-4% -$1.82M
CRM icon
109
Salesforce
CRM
$162B
$53.3M 0.22%
336,287
+1,091
+0.3% +$169K
ABMD
110
DELISTED
Abiomed Inc
ABMD
$53.1M 0.22%
186,069
+58,242
+46% +$19.4M
TMO icon
111
Thermo Fisher Scientific
TMO
$224B
$53M 0.22%
193,763
+659
+0.3% +$164K
META icon
112
Meta Platforms (Facebook)
META
$1.53T
$52.9M 0.22%
317,562
+1,082
+0.3% +$172K
AAMI
113
Acadian Asset Management
AAMI
$3.25B
$52.6M 0.22%
3,876,678
-46,993
-1% -$607K
ROP icon
114
Roper Technologies
ROP
$39.5B
$52.4M 0.22%
153,181
+506
+0.3% +$154K
BLK icon
115
Blackrock
BLK
$178B
$52.1M 0.22%
121,868
+417
+0.3% +$175K
TAL icon
116
TAL Education Group
TAL
$6.75B
$52.1M 0.22%
1,443,472
+530,110
+58% +$17.2M
JPM icon
117
JPMorgan Chase
JPM
$962B
$51.8M 0.22%
511,699
+1,813
+0.4% +$187K
ABEV icon
118
Ambev
ABEV
$43.9B
$50.5M 0.21%
11,754,208
+205,441
+2% +$944K
EDU icon
119
New Oriental
EDU
$8.84B
$50.1M 0.21%
+556,280
New +$41.9M
LQD icon
120
iShares iBoxx $ Investment Grade Corporate Bond ETF
LQD
$32.6B
$50M 0.21%
419,780
-80,820
-16% -$9.36M
EFX icon
121
Equifax
EFX
$21.4B
$49.8M 0.21%
420,612
+73,312
+21% +$7.83M
APTV icon
122
Aptiv
APTV
$10.3B
$46.9M 0.2%
590,149
+24,080
+4% +$1.85M
BA icon
123
Boeing
BA
$184B
$46.4M 0.2%
121,575
-44,468
-27% -$17.1M
SCCO icon
124
Southern Copper
SCCO
$164B
$44.9M 0.19%
1,235,190
-14,163
-1% -$447K
SYK icon
125
Stryker
SYK
$134B
$44.7M 0.19%
226,080
-3,903
-2% -$702K
3 4
5
6 7

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William Blair Investment Management's Q1 2019 Portfolio in Review

As of Q1 2019, William Blair Investment Management held 441 positions worth $23.8B, up 18% from $20.1B the previous quarter. Its ten largest holdings account for 20% of the portfolio.

William Blair Investment Management's Q1 2019 filing shows 37 new, 142 increased, 223 reduced and 35 closed positions. Its largest new stake was Steris: 803,400 shares worth $103M. The largest sale was Six Flags Entertainment Corp., an estimated $151M.

By sector, the portfolio is most concentrated in Technology at 17% of assets, up from 16% a quarter earlier, followed by Consumer Discretionary and Healthcare.

  • William Blair Investment Management's largest Q1 2019 buy was Steris: 803,400 shares worth $103M.
  • William Blair Investment Management added most to Check Point Software Technologies in Q1 2019, an estimated $181M increase.
  • William Blair Investment Management's biggest Q1 2019 reduction was WW International, cutting an estimated $59M.
  • William Blair Investment Management fully exited Six Flags Entertainment Corp. in Q1 2019, selling an estimated $151M.
  • William Blair Investment Management's ten largest holdings make up 20% of its $23.8B portfolio in Q1 2019.
  • William Blair Investment Management opened 37 new positions and closed 35 in Q1 2019.
  • William Blair Investment Management's portfolio value rose 18% quarter-over-quarter to $23.8B.

Based on William Blair Investment Management's 13F filing for Q1 2019, filed 10 May 2019.