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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
UNH icon
51
UnitedHealth
UNH
$364B
$101M 0.43%
324,015
-824
-0.3% -$253K
TWLO icon
52
Twilio
TWLO
$37.9B
$99.5M 0.42%
402,713
+15,952
+4% +$3.93M
ABBV icon
53
AbbVie
ABBV
$440B
$99.4M 0.42%
1,134,401
+110,846
+11% +$10.4M
KMX icon
54
CarMax
KMX
$8.33B
$99.3M 0.42%
1,080,662
+9,791
+0.9% +$978K
WMT icon
55
Walmart Inc
WMT
$923B
$96.4M 0.41%
2,066,940
+25,578
+1% +$1.14M
UNP icon
56
Union Pacific
UNP
$174B
$94.1M 0.4%
477,993
+5,905
+1% +$1.1M
ITW icon
57
Illinois Tool Works
ITW
$83.3B
$92.5M 0.39%
478,745
-1,323
-0.3% -$251K
TDG icon
58
TransDigm Group
TDG
$68.3B
$90.5M 0.38%
190,385
-426
-0.2% -$200K
VEA icon
59
Vanguard FTSE Developed Markets ETF
VEA
$238B
$86.6M 0.37%
2,118,194
-99,527
-4% -$4.08M
BABA icon
60
Alibaba
BABA
$300B
$85.6M 0.36%
291,146
-2,187
-0.7% -$576K
APH icon
61
Amphenol
APH
$210B
$83.8M 0.36%
3,097,256
-83,780
-3% -$2.21M
NOW icon
62
ServiceNow
NOW
$129B
$83.3M 0.35%
858,995
+33,455
+4% +$2.99M
CTAS icon
63
Cintas
CTAS
$81.4B
$81.2M 0.34%
976,100
+330,824
+51% +$25.5M
BMY icon
64
Bristol-Myers Squibb
BMY
$130B
$80.5M 0.34%
1,335,217
+93,741
+8% +$5.64M
IVV icon
65
iShares Core S&P 500 ETF
IVV
$904B
$78.4M 0.33%
233,158
-9,593
-4% -$3.19M
CHWY icon
66
Chewy
CHWY
$9.15B
$77.4M 0.33%
1,411,375
+117,854
+9% +$6.36M
COUP
67
DELISTED
Coupa Software Incorporated
COUP
$76.1M 0.32%
277,343
-18,146
-6% -$5.29M
ATVI
68
DELISTED
Activision Blizzard
ATVI
$74.2M 0.31%
916,055
+2,354
+0.3% +$191K
AME icon
69
Ametek
AME
$59.3B
$74.1M 0.31%
745,876
+41,850
+6% +$4.05M
AON icon
70
Aon
AON
$74.7B
$73.7M 0.31%
357,123
+102,013
+40% +$20.4M
BRK.B icon
71
Berkshire Hathaway Class B
BRK.B
$1.09T
$73.7M 0.31%
345,982
-4,492
-1% -$919K
XYZ
72
Block Inc
XYZ
$47B
$73.5M 0.31%
452,426
+169,575
+60% +$23.9M
NVDA icon
73
NVIDIA
NVDA
$5.43T
$70.5M 0.3%
5,210,520
+660,240
+15% +$7.68M
EXAS
74
DELISTED
Exact Sciences
EXAS
$70.5M 0.3%
691,182
+8,909
+1% +$769K
EW icon
75
Edwards Lifesciences
EW
$53.6B
$70.4M 0.3%
882,425
-7,981
-0.9% -$623K
1 2
3
4 5

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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.