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William Blair & Company

William Blair & Company Portfolio holdings

AUM $38.4B
1-Year Est. Return 25.71%
This Fund
S&P 500
This Quarter Est. Return
+12.53%
1 Year Est. Return
+25.71%
3 Year Est. Return
+88.7%
5 Year Est. Return
+104.53%
10 Year Est. Return
+665.86%
AUM
$23.6B
AUM Growth
+$2.6B
Cap. Flow
+$316M
Cap. Flow %
1.34%
Top 10 Hldgs %
26.84%
Holding
1,800
New
126
Increased
679
Reduced
652
Closed
80

Top Buys

Rank Stock Value
1
QDEL icon
QuidelOrtho
QDEL
+$40.3M
2
TDOC icon
Teladoc Health
TDOC
+$32.5M
3
CTAS icon
Cintas
CTAS
+$25.5M
4
ECL icon
Ecolab
ECL
+$25.4M
5
FTV icon
Fortive
FTV
+$24M

Top Sells

Rank Stock Value
1
GS icon
Goldman Sachs
GS
+$46.7M
2
GWRE icon
Guidewire Software
GWRE
+$38.9M
3
ANET icon
Arista Networks
ANET
+$31.4M
4
V icon
Visa
V
+$25.9M
5
PFNX
Pfenex Inc.
PFNX
+$25.4M

Sector Composition

Rank Sector Weight
1 Technology 27.37%
2 Healthcare 19.68%
3 Financials 10.88%
4 Consumer Discretionary 10.56%
5 Industrials 8.4%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
SPLK
101
DELISTED
Splunk Inc
SPLK
$48.8M 0.21%
259,575
+363
+0.1% +$72.3K
MRK icon
102
Merck
MRK
$328B
$48.7M 0.21%
615,177
+81,365
+15% +$6.37M
INFO
103
DELISTED
IHS Markit Ltd. Common Shares
INFO
$47.8M 0.2%
608,865
+21,893
+4% +$1.74M
RNG icon
104
RingCentral
RNG
$5.25B
$47.6M 0.2%
173,205
+44,746
+35% +$12.4M
LLY icon
105
Eli Lilly
LLY
$1.09T
$47.5M 0.2%
320,672
+12,250
+4% +$1.9M
VBK icon
106
Vanguard Morningstar Small-Cap Growth ETF
VBK
$24.8B
$46.6M 0.2%
216,742
-9,083
-4% -$1.92M
VEU icon
107
Vanguard FTSE All-World ex-US ETF
VEU
$70.5B
$46.3M 0.2%
917,112
-61,777
-6% -$3.13M
ZBRA icon
108
Zebra Technologies
ZBRA
$17.9B
$46.2M 0.2%
183,179
+23,344
+15% +$6.28M
ADP icon
109
Automatic Data Processing
ADP
$107B
$45.8M 0.19%
328,221
+9,425
+3% +$1.32M
WEX icon
110
WEX
WEX
$6.48B
$45.7M 0.19%
328,729
-19,816
-6% -$3.11M
ACWV icon
111
iShares MSCI Global Min Vol Factor ETF
ACWV
$3.37B
$45.1M 0.19%
490,428
-984
-0.2% -$89.9K
EFA icon
112
iShares MSCI EAFE ETF
EFA
$80.2B
$45M 0.19%
707,114
-42,592
-6% -$2.73M
RMD icon
113
ResMed
RMD
$32.8B
$43.9M 0.19%
256,021
+3,598
+1% +$664K
TXN icon
114
Texas Instruments
TXN
$253B
$43.1M 0.18%
301,974
+10,128
+3% +$1.38M
ORLY icon
115
O'Reilly Automotive
ORLY
$74.5B
$43M 0.18%
1,399,830
-6,135
-0.4% -$186K
WORK
116
DELISTED
Slack Technologies, Inc.
WORK
$42.6M 0.18%
1,587,363
+30,561
+2% +$899K
IBM icon
117
IBM
IBM
$222B
$41.4M 0.18%
356,234
-122,858
-26% -$14.5M
NTRS icon
118
Northern Trust
NTRS
$35B
$40.8M 0.17%
523,381
-143,981
-22% -$11.6M
ALGN icon
119
Align Technology
ALGN
$12.4B
$40.7M 0.17%
124,305
+5,082
+4% +$1.55M
PFE icon
120
Pfizer
PFE
$150B
$40.5M 0.17%
1,164,526
+202,048
+21% +$7.08M
IRTC icon
121
iRhythm Holdings
IRTC
$4.13B
$39.9M 0.17%
167,710
-17,620
-10% -$3.12M
YETI icon
122
Yeti Holdings
YETI
$3.85B
$39.8M 0.17%
878,864
+37,312
+4% +$1.77M
P
123
Everpure Inc
P
$37B
$39.8M 0.17%
2,587,666
-65,949
-2% -$1.08M
IWV icon
124
iShares Russell 3000 ETF
IWV
$20.4B
$39.8M 0.17%
203,309
-5,852
-3% -$1.13M
HOLX
125
DELISTED
Hologic
HOLX
$39.8M 0.17%
598,169
+181,536
+44% +$11.5M
3 4
5
6 7

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William Blair & Company's Q3 2020 Portfolio in Review

As of Q3 2020, William Blair & Company held 1,800 positions worth $23.6B, up 12% from $21B the previous quarter. Its ten largest holdings account for 27% of the portfolio.

William Blair & Company's Q3 2020 filing shows 126 new, 679 increased, 652 reduced and 80 closed positions. Its largest new stake was Unity: 72,858 shares worth $6.36M. The largest sale was Goldman Sachs, an estimated $46.7M.

By sector, the portfolio is most concentrated in Technology at 27% of assets, down from 27% a quarter earlier, followed by Healthcare and Financials.

  • William Blair & Company's largest Q3 2020 buy was Unity: 72,858 shares worth $6.36M.
  • William Blair & Company added most to QuidelOrtho in Q3 2020, an estimated $40.3M increase.
  • William Blair & Company's biggest Q3 2020 reduction was Goldman Sachs, cutting an estimated $46.7M.
  • William Blair & Company fully exited Pfenex Inc. in Q3 2020, selling an estimated $25.4M.
  • William Blair & Company's ten largest holdings make up 27% of its $23.6B portfolio in Q3 2020.
  • William Blair & Company opened 126 new positions and closed 80 in Q3 2020.
  • William Blair & Company's portfolio value rose 12% quarter-over-quarter to $23.6B.

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