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William Blair Investment Management

William Blair Investment Management Portfolio holdings

AUM $33.3B
1-Year Est. Return 44.76%
This Fund
S&P 500
This Quarter Est. Return
+13.65%
1 Year Est. Return
+44.76%
3 Year Est. Return
+140.8%
5 Year Est. Return
+166.51%
10 Year Est. Return
+978.6%
AUM
$25.7B
AUM Growth
+$1.1B
Cap. Flow
-$1.58B
Cap. Flow %
-6.14%
Top 10 Hldgs %
18.53%
Holding
367
New
26
Increased
146
Reduced
166
Closed
24

Top Buys

Rank Stock Value
1
AXON
Axon Enterprise
AXON
+$151M
2
RAMP icon
LiveRamp
RAMP
+$124M
3
GWRE icon
Guidewire Software
GWRE
+$115M
4
SE icon
Sea Limited
SE
+$102M
5
BLDR icon
Builders FirstSource
BLDR
+$89.9M

Top Sells

Rank Stock Value
1
NTES icon
NetEase
NTES
+$506M
2
CPRT icon
Copart
CPRT
+$136M
3
TSM icon
TSMC
TSM
+$125M
4
WEX icon
WEX
WEX
+$124M
5
BN icon
Brookfield
BN
+$123M

Sector Composition

Rank Sector Weight
1 Technology 26.05%
2 Healthcare 18.61%
3 Consumer Discretionary 13.78%
4 Industrials 13.27%
5 Financials 7.61%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
A icon
126
Agilent Technologies
A
$41.9B
$48.3M 0.19%
478,841
-8,109
-2% -$784K
ILMN icon
127
Illumina
ILMN
$29.1B
$46.4M 0.18%
154,419
-58,377
-27% -$20.1M
DAR icon
128
Darling Ingredients
DAR
$10B
$46.1M 0.18%
1,278,839
-89,235
-7% -$2.73M
JPM icon
129
JPMorgan Chase
JPM
$971B
$45M 0.18%
467,224
-55,030
-11% -$5.4M
ISRG icon
130
Intuitive Surgical
ISRG
$142B
$44.2M 0.17%
187,035
-20,475
-10% -$4.6M
LMT icon
131
Lockheed Martin
LMT
$140B
$44M 0.17%
114,806
-13,993
-11% -$5.34M
APO icon
132
Apollo Global Management
APO
$81.9B
$43.4M 0.17%
969,065
+114,801
+13% +$5.52M
LIN icon
133
Linde
LIN
$221B
$43M 0.17%
180,532
-896
-0.5% -$217K
EW icon
134
Edwards Lifesciences
EW
$53.6B
$42.4M 0.17%
530,606
-62,808
-11% -$4.9M
MMSI icon
135
Merit Medical Systems
MMSI
$5.45B
$42.3M 0.16%
972,964
+7,028
+0.7% +$318K
ECL icon
136
Ecolab
ECL
$78.1B
$41.5M 0.16%
207,807
+188,778
+992% +$37.7M
LHCG
137
DELISTED
LHC Group LLC
LHCG
$40.4M 0.16%
190,143
-24,910
-12% -$4.92M
AAN.A
138
DELISTED
The Aaron's Company Inc Class A
AAN.A
$39.5M 0.15%
697,195
+185,129
+36% +$10.5M
LQD icon
139
iShares iBoxx $ Investment Grade Corporate Bond ETF
LQD
$32.7B
$38.3M 0.15%
284,460
-3,090
-1% -$421K
QNST icon
140
QuinStreet
QNST
$1.19B
$38.2M 0.15%
2,413,415
-80,268
-3% -$1.04M
ECPG icon
141
Encore Capital Group
ECPG
$2.07B
$38.1M 0.15%
986,110
+335,072
+51% +$13.4M
CRL icon
142
Charles River Laboratories
CRL
$13.6B
$37.5M 0.15%
+165,812
New +$34.4M
ANET icon
143
Arista Networks
ANET
$265B
$36.6M 0.14%
2,829,680
+159,968
+6% +$2.2M
STNE icon
144
StoneCo
STNE
$2.43B
$35.9M 0.14%
678,136
+254,782
+60% +$12.2M
NEE icon
145
NextEra Energy
NEE
$179B
$35.7M 0.14%
514,768
-60,352
-10% -$4.17M
CWST icon
146
Casella Waste Systems
CWST
$5.76B
$35.2M 0.14%
630,100
+100,610
+19% +$5.51M
ECH icon
147
iShares MSCI Chile ETF
ECH
$1.03B
$35M 0.14%
1,453,700
+968,300
+199% +$25.3M
CDNS icon
148
Cadence Design Systems
CDNS
$89B
$33.1M 0.13%
310,604
-3,901
-1% -$410K
TTWO icon
149
Take-Two Interactive
TTWO
$45.4B
$32M 0.12%
193,796
-64,261
-25% -$10.4M
PRSP
150
DELISTED
Perspecta Inc. Common Stock
PRSP
$31M 0.12%
1,591,717
-4,098,162
-72% -$86.5M
4 5
6
7 8

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William Blair Investment Management's Q3 2020 Portfolio in Review

As of Q3 2020, William Blair Investment Management held 367 positions worth $25.7B, up 4.5% from $24.6B the previous quarter. Its ten largest holdings account for 19% of the portfolio.

William Blair Investment Management withdrew a net $1.58B in Q3 2020, closing 24 positions and reducing 166 holdings. Its most notable exit was Planet Fitness, an estimated $114M position sold in full.

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

Against the trend, William Blair Investment Management opened a new position in Axon Enterprise worth $157M.

  • William Blair Investment Management's largest Q3 2020 buy was Axon Enterprise: 1,734,820 shares worth $157M.
  • William Blair Investment Management added most to LiveRamp in Q3 2020, an estimated $124M increase.
  • William Blair Investment Management's biggest Q3 2020 reduction was NetEase, cutting an estimated $506M.
  • William Blair Investment Management fully exited Planet Fitness in Q3 2020, selling an estimated $114M.
  • William Blair Investment Management's ten largest holdings make up 19% of its $25.7B portfolio in Q3 2020.
  • William Blair Investment Management opened 26 new positions and closed 24 in Q3 2020.
  • William Blair Investment Management's portfolio value rose 4.5% quarter-over-quarter to $25.7B.

Based on William Blair Investment Management's 13F filing for Q3 2020, filed 6 Nov 2020.