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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
+1.57%
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
$23.4B
AUM Growth
-$452M
Cap. Flow
-$478M
Cap. Flow %
-2.05%
Top 10 Hldgs %
20.73%
Holding
398
New
26
Increased
153
Reduced
172
Closed
41

Top Buys

Rank Stock Value
1
IAA
IAA, Inc. Common Stock
IAA
+$134M
2
SPY icon
State Street SPDR S&P 500 ETF Trust
SPY
+$128M
3
WWE
World Wrestling Entertainment
WWE
+$112M
4
PFPT
Proofpoint, Inc.
PFPT
+$102M
5
PRSP
Perspecta Inc. Common Stock
PRSP
+$97.8M

Top Sells

Rank Stock Value
1
RCI icon
Rogers Communications
RCI
+$201M
2
CSGP icon
CoStar Group
CSGP
+$173M
3
CPRT icon
Copart
CPRT
+$156M
4
GWR
Genesee & Wyoming Inc.
GWR
+$147M
5
DPZ icon
Domino's
DPZ
+$137M

Sector Composition

Rank Sector Weight
1 Technology 20.24%
2 Healthcare 13.8%
3 Consumer Discretionary 13.77%
4 Industrials 13.46%
5 Financials 13.14%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
RTN
126
DELISTED
Raytheon Company
RTN
$43.3M 0.19%
220,884
-7,357
-3% -$1.36M
IDXX icon
127
Idexx Laboratories
IDXX
$46.2B
$42.9M 0.18%
157,867
-25,544
-14% -$7.11M
YUMC icon
128
Yum China
YUMC
$16.3B
$40.7M 0.17%
895,898
-3,784
-0.4% -$169K
ASR icon
129
Grupo Aeroportuario del Sureste
ASR
$8.15B
$40.6M 0.17%
266,005
-80,815
-23% -$12.3M
ATVI
130
DELISTED
Activision Blizzard
ATVI
$40.2M 0.17%
759,097
+52,386
+7% +$2.61M
COST icon
131
Costco
COST
$419B
$38.9M 0.17%
135,182
-15,010
-10% -$4.22M
SYK icon
132
Stryker
SYK
$134B
$38.5M 0.16%
178,112
-5,746
-3% -$1.23M
ABT icon
133
Abbott
ABT
$190B
$38.3M 0.16%
457,478
+4,646
+1% +$395K
DLB icon
134
Dolby
DLB
$5.75B
$37.3M 0.16%
577,313
+31,042
+6% +$1.95M
LIN icon
135
Linde
LIN
$226B
$37.2M 0.16%
192,196
-23,924
-11% -$4.63M
ISRG icon
136
Intuitive Surgical
ISRG
$142B
$37.1M 0.16%
206,022
+933
+0.5% +$161K
DPZ icon
137
Domino's
DPZ
$11.8B
$35.9M 0.15%
146,915
-553,239
-79% -$137M
ESE icon
138
ESCO Technologies
ESE
$7.65B
$34.5M 0.15%
433,300
+43,732
+11% +$3.48M
HOMB icon
139
Home BancShares
HOMB
$6.22B
$34M 0.15%
1,807,430
+67,794
+4% +$1.27M
SE icon
140
Sea Limited
SE
$80.5B
$33.5M 0.14%
1,081,955
-2,963
-0.3% -$99.5K
TTWO icon
141
Take-Two Interactive
TTWO
$46.8B
$32.7M 0.14%
260,576
+14,188
+6% +$1.77M
MMS icon
142
Maximus
MMS
$2.84B
$32.4M 0.14%
418,954
-22,088
-5% -$1.68M
CW icon
143
Curtiss-Wright
CW
$26.1B
$31.5M 0.13%
243,762
+60,448
+33% +$7.61M
BRC icon
144
Brady Corp
BRC
$4.48B
$31.5M 0.13%
593,087
+137,885
+30% +$6.97M
A icon
145
Agilent Technologies
A
$42.2B
$31M 0.13%
404,076
+90,366
+29% +$6.52M
ALLE icon
146
Allegion
ALLE
$14.3B
$30.8M 0.13%
296,866
+1,441
+0.5% +$147K
PAGS icon
147
PagSeguro Digital
PAGS
$2.48B
$30.5M 0.13%
+657,574
New +$30.5M
VMC icon
148
Vulcan Materials
VMC
$37.3B
$29.6M 0.13%
195,725
+1,260
+0.6% +$178K
LAUR icon
149
Laureate Education
LAUR
$5.05B
$29.5M 0.13%
1,781,123
-4,717
-0.3% -$79.2K
CIB icon
150
Grupo Cibest SA
CIB
$23.3B
$28.7M 0.12%
579,615
+313,995
+118% +$15.8M
4 5
6
7 8

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William Blair Investment Management's Q3 2019 Portfolio in Review

As of Q3 2019, William Blair Investment Management held 398 positions worth $23.4B, down 1.9% from $23.8B the previous quarter. Its ten largest holdings account for 21% of the portfolio.

William Blair Investment Management's Q3 2019 filing shows 26 new, 153 increased, 172 reduced and 41 closed positions. Its largest new stake was IAA, Inc. Common Stock: 2,969,390 shares worth $124M. The largest sale was Rogers Communications, an estimated $201M.

By sector, the portfolio is most concentrated in Technology at 20% of assets, up from 18% a quarter earlier, followed by Healthcare and Consumer Discretionary.

  • William Blair Investment Management's largest Q3 2019 buy was IAA, Inc. Common Stock: 2,969,390 shares worth $124M.
  • William Blair Investment Management added most to State Street SPDR S&P 500 ETF Trust in Q3 2019, an estimated $128M increase.
  • William Blair Investment Management's biggest Q3 2019 reduction was CoStar Group, cutting an estimated $173M.
  • William Blair Investment Management fully exited Rogers Communications in Q3 2019, selling an estimated $201M.
  • William Blair Investment Management's ten largest holdings make up 21% of its $23.4B portfolio in Q3 2019.
  • William Blair Investment Management opened 26 new positions and closed 41 in Q3 2019.
  • William Blair Investment Management's portfolio value fell 1.9% quarter-over-quarter to $23.4B.

Based on William Blair Investment Management's 13F filing for Q3 2019, filed 12 Nov 2019.