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William Blair & Company

William Blair & Company Portfolio holdings

AUM $34.9B
1-Year Est. Return 18.88%
This Fund
S&P 500
This Quarter Est. Return
+12.53%
1 Year Est. Return
+18.88%
3 Year Est. Return
+73.84%
5 Year Est. Return
+90.13%
10 Year Est. Return
+512.03%
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
AAPL icon
1
Apple
AAPL
$4.99T
$1.17B 4.95%
10,083,745
-102,995
-1% -$11.2M
AMZN icon
2
Amazon
AMZN
$2.46T
$960M 4.07%
6,096,520
-49,780
-0.8% -$7.85M
MSFT icon
3
Microsoft
MSFT
$2.94T
$836M 3.55%
3,974,716
-903
-0% -$190K
IDXX icon
4
Idexx Laboratories
IDXX
$44.8B
$594M 2.52%
1,510,839
-40,835
-3% -$15.1M
VEEV icon
5
Veeva Systems
VEEV
$33.8B
$536M 2.27%
1,907,331
-68,867
-3% -$18.1M
V icon
6
Visa
V
$707B
$514M 2.18%
2,572,771
-129,646
-5% -$25.9M
PYPL icon
7
PayPal
PYPL
$50.3B
$477M 2.02%
2,419,776
+48,811
+2% +$9.19M
DXCM icon
8
DexCom
DXCM
$29.3B
$431M 1.83%
4,186,588
-107,468
-3% -$11.2M
ZTS icon
9
Zoetis
ZTS
$32.9B
$412M 1.75%
2,491,685
+33,457
+1% +$5.14M
MA icon
10
Mastercard
MA
$501B
$399M 1.69%
1,179,667
-15,259
-1% -$4.96M
DOCU
11
DocuSign
DOCU
$11B
$393M 1.67%
1,825,396
-21,346
-1% -$4.43M
ADBE icon
12
Adobe
ADBE
$104B
$379M 1.61%
771,841
-11,473
-1% -$5.34M
GOOG icon
13
Alphabet (Google) Class C
GOOG
$4.08T
$351M 1.49%
4,778,460
+33,000
+0.7% +$2.52M
DHR icon
14
Danaher
DHR
$141B
$346M 1.47%
1,812,552
-56,749
-3% -$10.1M
SBUX icon
15
Starbucks
SBUX
$118B
$314M 1.33%
3,655,420
+96,732
+3% +$7.72M
VUG icon
16
Vanguard Growth ETF
VUG
$214B
$303M 1.28%
7,980,318
+197,604
+3% +$7.3M
WDAY icon
17
Workday
WDAY
$41B
$277M 1.17%
1,287,265
+53,248
+4% +$10.5M
CRM icon
18
Salesforce
CRM
$153B
$268M 1.14%
1,066,512
+25,382
+2% +$5.56M
FISV
19
Fiserv Inc
FISV
$29.5B
$250M 1.06%
2,429,217
-44,268
-2% -$4.41M
ECL icon
20
Ecolab
ECL
$79.1B
$239M 1.01%
1,196,807
+127,046
+12% +$25.4M
CSGP icon
21
CoStar Group
CSGP
$11.9B
$218M 0.93%
2,573,680
+18,390
+0.7% +$1.47M
SPY icon
22
State Street SPDR S&P 500 ETF Trust
SPY
$777B
$183M 0.78%
547,891
-7,955
-1% -$2.64M
ABT icon
23
Abbott
ABT
$191B
$182M 0.77%
1,674,209
+146,445
+10% +$14.9M
GOOGL icon
24
Alphabet (Google) Class A
GOOGL
$4.09T
$179M 0.76%
2,440,360
+18,080
+0.7% +$1.38M
ICE icon
25
Intercontinental Exchange
ICE
$87.1B
$173M 0.73%
1,728,686
-13,171
-0.8% -$1.3M
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.