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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
VTWO icon
501
Vanguard Russell 2000 ETF
VTWO
$17.6B
$2.94M 0.01%
48,558
-2,558
-5% -$155K
TMUS icon
502
T-Mobile US
TMUS
$193B
$2.93M 0.01%
25,604
+7,077
+38% +$784K
FSV icon
503
FirstService
FSV
$6.25B
$2.91M 0.01%
22,068
-1,008
-4% -$119K
PCYO icon
504
Pure Cycle
PCYO
$279M
$2.9M 0.01%
321,255
-3,500
-1% -$33K
ETSY icon
505
Etsy
ETSY
$7.33B
$2.88M 0.01%
23,655
-4,986
-17% -$584K
GH icon
506
Guardant Health
GH
$22.2B
$2.87M 0.01%
25,713
+6,398
+33% +$585K
MPWR icon
507
Monolithic Power Systems
MPWR
$70B
$2.86M 0.01%
10,238
+70
+0.7% +$18.2K
MTD icon
508
Mettler-Toledo International
MTD
$28.7B
$2.84M 0.01%
2,942
-23
-0.8% -$21.3K
USFR
509
DELISTED
WisdomTree Bloomberg Floating Rate Treasury Fund
USFR
$2.82M 0.01%
112,337
-110,500
-50% -$2.77M
ALRM icon
510
Alarm.com
ALRM
$2.75B
$2.81M 0.01%
50,852
-62,614
-55% -$3.87M
MDLA
511
DELISTED
Medallia, Inc.
MDLA
$2.8M 0.01%
102,096
+25,386
+33% +$770K
ARCC icon
512
Ares Capital
ARCC
$14.4B
$2.79M 0.01%
199,851
+208
+0.1% +$2.96K
WMG icon
513
Warner Music
WMG
$13.1B
$2.74M 0.01%
+95,190
New +$2.78M
PPG icon
514
PPG Industries
PPG
$25.7B
$2.72M 0.01%
22,282
-90
-0.4% -$10.5K
MELI icon
515
Mercado Libre
MELI
$93.8B
$2.71M 0.01%
2,507
+143
+6% +$155K
CTLT
516
DELISTED
CATALENT, INC.
CTLT
$2.71M 0.01%
31,689
-6,960
-18% -$588K
PRFT
517
DELISTED
Perficient Inc
PRFT
$2.7M 0.01%
63,250
+8,190
+15% +$330K
GM icon
518
General Motors
GM
$76.4B
$2.7M 0.01%
91,290
-15,749
-15% -$442K
ENB icon
519
Enbridge
ENB
$112B
$2.69M 0.01%
92,024
-5,318
-5% -$167K
DHI icon
520
D.R. Horton
DHI
$41.6B
$2.69M 0.01%
35,517
+690
+2% +$47.1K
URI icon
521
United Rentals
URI
$69.9B
$2.69M 0.01%
15,387
+12,093
+367% +$2.03M
SRE icon
522
Sempra
SRE
$56.4B
$2.68M 0.01%
45,264
+300
+0.7% +$18.5K
COP icon
523
ConocoPhillips
COP
$150B
$2.67M 0.01%
81,400
+4,858
+6% +$184K
LHCG
524
DELISTED
LHC Group LLC
LHCG
$2.66M 0.01%
12,494
-2,077
-14% -$410K
XLY icon
525
State Street Consumer Discretionary Select Sector SPDR ETF
XLY
$23.6B
$2.65M 0.01%
36,018
-2,388
-6% -$169K
19 20
21
22 23

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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.