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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
NEPH icon
1126
Nephros
NEPH
$45.7M
$341K ﹤0.01%
34,249
– –
HWM icon
1127
Howmet Aerospace
HWM
$113B
$337K ﹤0.01%
14,262
-1,596
-10% -$35.7K
SCWX
1128
DELISTED
SecureWorks Corp Class A Common Stock
SCWX
$337K ﹤0.01%
20,254
– –
PIZ icon
1129
Invesco Dorsey Wright Developed Markets Momentum ETF
PIZ
$756M
$335K ﹤0.01%
11,615
+1,705
+17% +$46.8K
VIS icon
1130
Vanguard Industrials ETF
VIS
$8.39B
$334K ﹤0.01%
2,173
-913
-30% -$137K
EDIT icon
1131
Editas Medicine
EDIT
$442M
$333K ﹤0.01%
11,250
– –
GIL icon
1132
Gildan
GIL
$10.6B
$331K ﹤0.01%
+11,220
New +$328K
CM icon
1133
Canadian Imperial Bank of Commerce
CM
$108B
$330K ﹤0.01%
7,922
+388
+5% +$16.4K
RGT
1134
Royce Global Value Trust
RGT
$102M
$330K ﹤0.01%
28,195
– –
DSGX icon
1135
Descartes Systems
DSGX
$6.82B
$329K ﹤0.01%
7,700
-250
-3% -$10.2K
OGS icon
1136
ONE Gas
OGS
$5.04B
$329K ﹤0.01%
3,511
+484
+16% +$44.3K
MGA icon
1137
Magna International
MGA
$18.8B
$325K ﹤0.01%
5,929
+1,061
+22% +$57.5K
KEY icon
1138
KeyCorp
KEY
$24.4B
$321K ﹤0.01%
15,845
-80
-0.5% -$1.51K
FTS icon
1139
Fortis
FTS
$28.7B
$320K ﹤0.01%
7,701
– –
Y
1140
DELISTED
Alleghany Corp
Y
$320K ﹤0.01%
+400
New +$312K
IGF icon
1141
iShares Global Infrastructure ETF
IGF
$10.8B
$319K ﹤0.01%
6,659
– –
CVET
1142
DELISTED
Covetrus, Inc. Common Stock
CVET
$319K ﹤0.01%
24,202
-5,927
-20% -$71.8K
AMTD
1143
DELISTED
TD Ameritrade Holding Corp
AMTD
$319K ﹤0.01%
6,410
-2,740
-30% -$119K
WFC.PRL icon
1144
Wells Fargo 7.5% Non Cumv Perp Conv
WFC.PRL
$4.66B
$318K ﹤0.01%
219
– –
FLOT icon
1145
iShares Floating Rate Bond ETF
FLOT
$10.3B
$317K ﹤0.01%
6,231
+1,300
+26% +$66.2K
COHU icon
1146
Cohu
COHU
$2.5B
$316K ﹤0.01%
13,849
-1,054
-7% -$18.9K
IWC icon
1147
iShares Micro-Cap ETF
IWC
$1.52B
$316K ﹤0.01%
3,175
+1,950
+159% +$180K
MAS icon
1148
Masco
MAS
$15.3B
$316K ﹤0.01%
+6,577
New +$299K
BNS icon
1149
Scotiabank
BNS
$108B
$314K ﹤0.01%
5,550
– –
VTEB icon
1150
Vanguard Tax-Exempt Bond Index Fund
VTEB
$45.3B
$314K ﹤0.01%
5,874
+1,426
+32% +$76.3K
44 45
46
47 48

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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.