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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
MXIM
651
DELISTED
Maxim Integrated Products
MXIM
$1.52M 0.01%
22,530
-3,165
-12% -$214K
WHR icon
652
Whirlpool
WHR
$2.82B
$1.51M 0.01%
+8,224
New +$1.37M
EFX icon
653
Equifax
EFX
$21.4B
$1.51M 0.01%
9,608
+1,772
+23% +$290K
ACWI icon
654
iShares MSCI ACWI ETF
ACWI
$33.6B
$1.5M 0.01%
18,812
-923
-5% -$73.1K
HUM icon
655
Humana
HUM
$46.1B
$1.5M 0.01%
3,627
-124
-3% -$49.9K
MKL icon
656
Markel Group
MKL
$22.7B
$1.5M 0.01%
1,539
-90
-6% -$91.4K
NSSC icon
657
Napco Security Technologies
NSSC
$1.38B
$1.5M 0.01%
127,240
-4,770
-4% -$57.5K
MSI icon
658
Motorola Solutions
MSI
$76.7B
$1.49M 0.01%
9,520
+1,318
+16% +$193K
RPM icon
659
RPM International
RPM
$14.5B
$1.49M 0.01%
17,956
+3,304
+23% +$270K
FCN icon
660
FTI Consulting
FCN
$4.15B
$1.48M 0.01%
+13,995
New +$1.59M
MAR icon
661
Marriott International
MAR
$92.2B
$1.45M 0.01%
15,705
-195
-1% -$18.4K
LSCC icon
662
Lattice Semiconductor
LSCC
$18.3B
$1.45M 0.01%
50,129
-30,597
-38% -$899K
HRL icon
663
Hormel Foods
HRL
$13.5B
$1.44M 0.01%
29,531
-501
-2% -$25.1K
VTEB icon
664
Vanguard Tax-Exempt Bond Index Fund
VTEB
$46.1B
$1.44M 0.01%
26,482
+7,606
+40% +$415K
AAP icon
665
Advance Auto Parts
AAP
$3.41B
$1.44M 0.01%
9,360
+2,999
+47% +$452K
VCYT icon
666
Veracyte
VCYT
$3.44B
$1.43M 0.01%
44,063
+8,192
+23% +$260K
SPHQ icon
667
Invesco S&P 500 Quality ETF
SPHQ
$20B
$1.43M 0.01%
37,015
-1,100
-3% -$41.6K
EA
668
DELISTED
Electronic Arts
EA
$1.4M 0.01%
10,759
-71
-0.7% -$9.68K
PSX icon
669
Phillips 66
PSX
$91.7B
$1.4M 0.01%
27,037
-20,025
-43% -$1.22M
OKE icon
670
Oneok
OKE
$58.7B
$1.39M 0.01%
53,574
-5,983
-10% -$167K
CYBR
671
DELISTED
CyberArk
CYBR
$1.38M 0.01%
13,329
-10,781
-45% -$1.16M
EXC icon
672
Exelon
EXC
$46.9B
$1.37M 0.01%
53,781
-1,609
-3% -$42.7K
IDV icon
673
iShares International Select Dividend ETF
IDV
$8.53B
$1.37M 0.01%
54,903
-10,070
-15% -$261K
AMG icon
674
Affiliated Managers Group
AMG
$9.64B
$1.36M 0.01%
19,940
-61,106
-75% -$4.27M
PAAS icon
675
Pan American Silver
PAAS
$19.8B
$1.36M 0.01%
42,190
-25,553
-38% -$878K
25 26
27
28 29

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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.