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William Blair & Company

William Blair & Company Portfolio holdings

AUM $34.9B
1-Year Est. Return 18.88%
This Fund
S&P 500
This Quarter Est. Return
+9.1%
1 Year Est. Return
+18.88%
3 Year Est. Return
+73.84%
5 Year Est. Return
+90.13%
10 Year Est. Return
+563.35%
AUM
$19.5B
AUM Growth
+$2.1B
Cap. Flow
+$465M
Cap. Flow %
2.39%
Top 10 Hldgs %
22.3%
Holding
1,847
New
125
Increased
679
Reduced
598
Closed
120

Top Buys

Rank Stock Value
1
ANET icon
Arista Networks
ANET
+$24M
2
DIS icon
Walt Disney
DIS
+$22.5M
3
PYPL icon
PayPal
PYPL
+$21.1M
4
AXP icon
American Express
AXP
+$18.6M
5
NOW icon
ServiceNow
NOW
+$15.5M

Top Sells

Rank Stock Value
1
CELG
Celgene Corp
CELG
+$25M
2
ULTA icon
Ulta Beauty
ULTA
+$21.8M
3
EOG icon
EOG Resources
EOG
+$20.9M
4
ABMD
Abiomed Inc
ABMD
+$16.3M
5
GRUB
Just Eat Takeaway.com N.V. American Depositary Shares
GRUB
+$11.2M

Sector Composition

Rank Sector Weight
1 Technology 23.46%
2 Healthcare 17.35%
3 Financials 13.04%
4 Consumer Discretionary 9.94%
5 Industrials 9.53%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
CHL
1226
DELISTED
China Mobile Limited
CHL
$251K ﹤0.01%
5,931
-1,011
-15% -$40.8K
UA icon
1227
Under Armour Class C
UA
$2.53B
$250K ﹤0.01%
13,047
+124
+1% +$2.18K
MDP
1228
DELISTED
Meredith Corporation
MDP
$250K ﹤0.01%
7,712
-7,544
-49% -$268K
DOC
1229
DELISTED
PHYSICIANS REALTY TRUST
DOC
$249K ﹤0.01%
+13,150
New +$241K
DOX icon
1230
Amdocs
DOX
$6.22B
$248K ﹤0.01%
+3,440
New +$234K
FE icon
1231
FirstEnergy
FE
$27.5B
$247K ﹤0.01%
5,090
+172
+3% +$8.22K
LYFT icon
1232
Lyft
LYFT
$6.63B
$246K ﹤0.01%
+5,719
New +$251K
UHS icon
1233
Universal Health Services
UHS
$10.5B
$244K ﹤0.01%
1,702
+158
+10% +$22.5K
ROBO icon
1234
ROBO Global Robotics & Automation Index ETF
ROBO
$2.1B
$243K ﹤0.01%
5,778
+1
+0% +$40
FUL icon
1235
H.B. Fuller
FUL
$3.28B
$242K ﹤0.01%
4,687
– –
AQN icon
1236
Algonquin Power & Utilities
AQN
$4.42B
$241K ﹤0.01%
17,000
-571
-3% -$7.92K
TFI icon
1237
State Street SPDR Nuveen ICE Municipal Bond ETF
TFI
$3.14B
$238K ﹤0.01%
4,706
+563
+14% +$28.5K
HDS
1238
DELISTED
HD Supply Holdings, Inc.
HDS
$238K ﹤0.01%
5,908
-100
-2% -$3.98K
OXSQ icon
1239
Oxford Square Capital
OXSQ
$157M
$237K ﹤0.01%
43,600
-2,800
-6% -$15.5K
BXP icon
1240
Boston Properties
BXP
$11.1B
$236K ﹤0.01%
1,711
-29,451
-95% -$3.97M
ELS icon
1241
Equity Lifestyle Properties
ELS
$12.6B
$235K ﹤0.01%
3,334
-788
-19% -$54.8K
ACWX icon
1242
iShares MSCI ACWI ex US ETF
ACWX
$11.8B
$234K ﹤0.01%
4,760
+3,644
+327% +$174K
GOVT icon
1243
iShares US Treasury Bond ETF
GOVT
$43.6B
$234K ﹤0.01%
9,012
+1,227
+16% +$32K
BOH icon
1244
Bank of Hawaii
BOH
$3.13B
$233K ﹤0.01%
2,453
-3,517
-59% -$313K
ITB icon
1245
iShares US Home Construction ETF
ITB
$2.35B
$232K ﹤0.01%
5,213
-3,000
-37% -$134K
FDL icon
1246
First Trust Morningstar Dividend Leaders Index Fund
FDL
$7.82B
$231K ﹤0.01%
7,105
– –
ENTG icon
1247
Entegris
ENTG
$23.2B
$230K ﹤0.01%
+4,583
New +$221K
IPAY icon
1248
Amplify Mobile Payments ETF
IPAY
$182M
$229K ﹤0.01%
4,617
+927
+25% +$44.1K
BAB icon
1249
Invesco Taxable Municipal Bond ETF
BAB
$1.02B
$228K ﹤0.01%
7,193
– –
VMBS icon
1250
Vanguard Mortgage-Backed Securities ETF
VMBS
$15.5B
$228K ﹤0.01%
4,280
+730
+21% +$38.8K
48 49
50
51 52

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William Blair & Company's Q4 2019 Portfolio in Review

As of Q4 2019, William Blair & Company held 1,847 positions worth $19.5B, up 12% from $17.4B the previous quarter. Its ten largest holdings account for 22% of the portfolio.

William Blair & Company's Q4 2019 filing shows 125 new, 679 increased, 598 reduced and 120 closed positions. Its largest new stake was Dynatrace: 165,602 shares worth $4.19M. The largest sale was Celgene Corp, an estimated $25M.

By sector, the portfolio is most concentrated in Technology at 23% of assets, up from 23% a quarter earlier, followed by Healthcare and Financials.

  • William Blair & Company's largest Q4 2019 buy was Dynatrace: 165,602 shares worth $4.19M.
  • William Blair & Company added most to Arista Networks in Q4 2019, an estimated $24M increase.
  • William Blair & Company's biggest Q4 2019 reduction was Ulta Beauty, cutting an estimated $21.8M.
  • William Blair & Company fully exited Celgene Corp in Q4 2019, selling an estimated $25M.
  • William Blair & Company's ten largest holdings make up 22% of its $19.5B portfolio in Q4 2019.
  • William Blair & Company opened 125 new positions and closed 120 in Q4 2019.
  • William Blair & Company's portfolio value rose 12% quarter-over-quarter to $19.5B.

Based on William Blair & Company's 13F filing for Q4 2019, filed 13 Feb 2020.