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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
RXI icon
1601
iShares Global Consumer Discretionary ETF
RXI
$274M
$10K ﹤0.01%
+75
New +$9.77K
ASRT
1602
DELISTED
Assertio
ASRT
$9K ﹤0.01%
+220
New +$10.7K
ELD icon
1603
WisdomTree Emerging Markets Local Debt Fund
ELD
$143M
$9K ﹤0.01%
295
+1
+0.3% +$33
SUPN icon
1604
Supernus Pharmaceuticals
SUPN
$2.78B
$9K ﹤0.01%
425
+135
+47% +$3.06K
WTPI
1605
WisdomTree Equity Premium Income Fund
WTPI
$503M
$9K ﹤0.01%
344
– –
ECH icon
1606
iShares MSCI Chile ETF
ECH
$1.03B
$8K ﹤0.01%
319
– –
HYD icon
1607
VanEck High Yield Muni ETF
HYD
$4.4B
$8K ﹤0.01%
137
-53
-28% -$3.17K
IXC icon
1608
iShares Global Energy ETF
IXC
$2.74B
$8K ﹤0.01%
472
– –
IYT icon
1609
iShares US Transportation ETF
IYT
$2.27B
$8K ﹤0.01%
152
– –
SDOW icon
1610
ProShares UltraPro Short Dow 30
SDOW
$185M
$8K ﹤0.01%
28
– –
SLVP icon
1611
iShares MSCI Global Silver and Metals Miners ETF
SLVP
$976M
$8K ﹤0.01%
539
-500
-48% -$8.1K
SPSM icon
1612
State Street SPDR Portfolio S&P 600 Small Cap ETF
SPSM
$17.5B
$8K ﹤0.01%
281
– –
XOP icon
1613
State Street SPDR S&P Oil & Gas Exploration & Production ETF
XOP
$3.68B
$8K ﹤0.01%
201
-125
-38% -$6.29K
USLB
1614
DELISTED
Invesco Russell 1000 Low Beta Equal Weight ETF
USLB
$8K ﹤0.01%
250
– –
ANGL icon
1615
VanEck Fallen Angel High Yield Bond ETF
ANGL
$3.11B
$7K ﹤0.01%
236
-1,193
-83% -$35.8K
DIG icon
1616
ProShares Ultra Energy
DIG
$83.3M
$7K ﹤0.01%
1,144
+280
+32% +$2.33K
FXU icon
1617
First Trust Utilities AlphaDEX Fund
FXU
$827M
$7K ﹤0.01%
261
– –
IWC icon
1618
iShares Micro-Cap ETF
IWC
$1.5B
$7K ﹤0.01%
75
-50
-40% -$4.56K
UPRO icon
1619
ProShares UltraPro S&P 500
UPRO
$5.74B
$7K ﹤0.01%
250
– –
NEOS
1620
DELISTED
Neos Therapeutics, Inc
NEOS
$7K ﹤0.01%
13,400
-9,500
-41% -$6.46K
BATRA icon
1621
Atlanta Braves Holdings Series A
BATRA
$3.63B
$6K ﹤0.01%
305
-2
-0.7% -$39
IGE icon
1622
iShares North American Natural Resources ETF
IGE
$786M
$6K ﹤0.01%
283
– –
INTF icon
1623
iShares International Equity Factor ETF
INTF
$3.75B
$6K ﹤0.01%
255
-1,915
-88% -$46.6K
IXP icon
1624
iShares Global Comm Services ETF
IXP
$561M
$6K ﹤0.01%
85
– –
KIE icon
1625
State Street SPDR S&P Insurance ETF
KIE
$676M
$6K ﹤0.01%
211
-50
-19% -$1.43K
63 64
65
66 67

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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.