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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
+512.03%
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
XOM icon
126
ExxonMobil
XOM
$638B
$34.4M 0.18%
493,651
-21,217
-4% -$1.47M
ROL icon
127
Rollins
ROL
$18.2B
$34M 0.17%
1,538,187
+507,787
+49% +$12M
TEAM icon
128
Atlassian
TEAM
$28B
$34M 0.17%
282,393
+20,055
+8% +$2.44M
PFE icon
129
Pfizer
PFE
$145B
$33.6M 0.17%
903,783
-51,017
-5% -$1.82M
CME icon
130
CME Group
CME
$94.4B
$33.4M 0.17%
166,588
+3,039
+2% +$623K
SGEN
131
DELISTED
Seagen Inc. Common Stock
SGEN
$33.3M 0.17%
291,747
-24,813
-8% -$2.63M
TXN icon
132
Texas Instruments
TXN
$259B
$33.2M 0.17%
258,464
+10,255
+4% +$1.27M
MAR icon
133
Marriott International
MAR
$90B
$33M 0.17%
218,236
+1,337
+0.6% +$179K
GSHD icon
134
Goosehead Insurance
GSHD
$2.43B
$32.4M 0.17%
763,224
+234,230
+44% +$10.4M
IWM icon
135
iShares Russell 2000 ETF
IWM
$83B
$32.3M 0.17%
194,890
+8,000
+4% +$1.26M
MDY icon
136
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
$27.2B
$32M 0.16%
85,181
+13,893
+19% +$5.02M
VNQ icon
137
Vanguard Real Estate ETF
VNQ
$39.2B
$31.5M 0.16%
339,758
+19,706
+6% +$1.82M
SMG icon
138
ScottsMiracle-Gro
SMG
$3.86B
$31.4M 0.16%
295,855
+3,796
+1% +$388K
PANW icon
139
Palo Alto Networks
PANW
$299B
$31.1M 0.16%
807,072
+24,666
+3% +$933K
BAC icon
140
Bank of America
BAC
$440B
$31.1M 0.16%
882,228
-30,202
-3% -$976K
TWLO icon
141
Twilio
TWLO
$29.5B
$30.7M 0.16%
311,977
-48,462
-13% -$4.95M
ABMD
142
DELISTED
Abiomed Inc
ABMD
$30.6M 0.16%
179,555
-87,714
-33% -$16.3M
UPS icon
143
United Parcel Service
UPS
$92.7B
$30.6M 0.16%
261,646
+6,175
+2% +$731K
XYL icon
144
Xylem
XYL
$28.5B
$29.8M 0.15%
377,782
+93,895
+33% +$7.31M
BLK icon
145
Blackrock
BLK
$175B
$29.5M 0.15%
58,768
+19,235
+49% +$9.13M
ORLY icon
146
O'Reilly Automotive
ORLY
$74.9B
$29.3M 0.15%
1,001,115
+6,855
+0.7% +$196K
PFNX
147
DELISTED
Pfenex Inc.
PFNX
$28.6M 0.15%
2,602,486
+49,664
+2% +$493K
PAYX icon
148
Paychex
PAYX
$42.2B
$28.3M 0.15%
332,742
-3,626
-1% -$306K
CCI icon
149
Crown Castle
CCI
$33.9B
$28M 0.14%
197,033
+14,563
+8% +$1.99M
VOE icon
150
Vanguard Morningstar Mid-Cap Value ETF
VOE
$24B
$27.9M 0.14%
234,078
+63,134
+37% +$7.27M
4 5
6
7 8

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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.