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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
+9.1%
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
$19.5B
AUM Growth
+$2.1B
Cap. Flow
+$465M
Cap. Flow %
2.39%
Top 10 Hldgs %
22.3%
Holding
1,847
New
125
Increased
679
Reduced
598
Closed
120

Top Buys

Rank Stock Value
1
ANET icon
Arista Networks
ANET
+$24M
2
DIS icon
Walt Disney
DIS
+$22.5M
3
PYPL icon
PayPal
PYPL
+$21.1M
4
AXP icon
American Express
AXP
+$18.6M
5
NOW icon
ServiceNow
NOW
+$15.5M

Top Sells

Rank Stock Value
1
CELG
Celgene Corp
CELG
+$25M
2
ULTA icon
Ulta Beauty
ULTA
+$21.8M
3
EOG icon
EOG Resources
EOG
+$20.9M
4
ABMD
Abiomed Inc
ABMD
+$16.3M
5
GRUB
Just Eat Takeaway.com N.V. American Depositary Shares
GRUB
+$11.2M

Sector Composition

Rank Sector Weight
1 Technology 23.46%
2 Healthcare 17.35%
3 Financials 13.04%
4 Consumer Discretionary 9.94%
5 Industrials 9.53%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
AAPL icon
1
Apple
AAPL
$5.05T
$754M 3.88%
10,272,468
+197,264
+2% +$12.7M
MSFT icon
2
Microsoft
MSFT
$2.96T
$642M 3.3%
4,068,954
+33,455
+0.8% +$4.91M
AMZN icon
3
Amazon
AMZN
$2.49T
$509M 2.62%
5,509,260
+86,100
+2% +$7.62M
V icon
4
Visa
V
$703B
$499M 2.56%
2,653,438
+7,371
+0.3% +$1.33M
IDXX icon
5
Idexx Laboratories
IDXX
$44.9B
$404M 2.07%
1,545,980
-199
-0% -$52.4K
MA icon
6
Mastercard
MA
$500B
$361M 1.86%
1,209,255
+53,871
+5% +$15.2M
ZTS icon
7
Zoetis
ZTS
$32.5B
$310M 1.59%
2,338,790
-12,774
-0.5% -$1.59M
GOOG icon
8
Alphabet (Google) Class C
GOOG
$4.16T
$305M 1.57%
4,560,900
+229,520
+5% +$14.8M
VEEV icon
9
Veeva Systems
VEEV
$33.9B
$281M 1.44%
1,997,629
+11,800
+0.6% +$1.73M
DHR icon
10
Danaher
DHR
$139B
$275M 1.41%
2,022,407
+6,606
+0.3% +$835K
FISV
11
Fiserv Inc
FISV
$29.8B
$272M 1.4%
2,350,676
+17,649
+0.8% +$1.95M
DXCM icon
12
DexCom
DXCM
$29.3B
$264M 1.35%
4,820,356
+225,408
+5% +$10.7M
ADBE icon
13
Adobe
ADBE
$105B
$256M 1.31%
775,029
+4,662
+0.6% +$1.37M
PYPL icon
14
PayPal
PYPL
$51.2B
$249M 1.28%
2,298,578
+202,240
+10% +$21.1M
SBUX icon
15
Starbucks
SBUX
$119B
$245M 1.26%
2,786,071
+129,315
+5% +$11M
JPM icon
16
JPMorgan Chase
JPM
$928B
$241M 1.24%
1,725,543
+41,729
+2% +$5.35M
VUG icon
17
Vanguard Growth ETF
VUG
$216B
$221M 1.14%
7,283,490
+404,568
+6% +$11.7M
ECL icon
18
Ecolab
ECL
$79.1B
$189M 0.97%
978,741
+18,242
+2% +$3.46M
DIS icon
19
Walt Disney
DIS
$172B
$179M 0.92%
1,236,421
+161,386
+15% +$22.5M
SPY icon
20
State Street SPDR S&P 500 ETF Trust
SPY
$783B
$176M 0.91%
548,090
+6,269
+1% +$1.93M
GWRE icon
21
Guidewire Software
GWRE
$14.1B
$176M 0.9%
1,603,803
+55,069
+4% +$6.16M
GOOGL icon
22
Alphabet (Google) Class A
GOOGL
$4.17T
$160M 0.82%
2,391,740
+4,440
+0.2% +$286K
ICE icon
23
Intercontinental Exchange
ICE
$87.6B
$156M 0.8%
1,687,831
+71,571
+4% +$6.64M
CRM icon
24
Salesforce
CRM
$155B
$154M 0.79%
946,751
-8,589
-0.9% -$1.35M
CSGP icon
25
CoStar Group
CSGP
$12.3B
$153M 0.79%
2,558,290
+37,590
+1% +$2.19M
1
2 3 4 5

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William Blair & Company's Q4 2019 Portfolio in Review

As of Q4 2019, William Blair & Company held 1,847 positions worth $19.5B, up 12% from $17.4B the previous quarter. Its ten largest holdings account for 22% of the portfolio.

William Blair & Company's Q4 2019 filing shows 125 new, 679 increased, 598 reduced and 120 closed positions. Its largest new stake was Dynatrace: 165,602 shares worth $4.19M. The largest sale was Celgene Corp, an estimated $25M.

By sector, the portfolio is most concentrated in Technology at 23% of assets, up from 23% a quarter earlier, followed by Healthcare and Financials.

  • William Blair & Company's largest Q4 2019 buy was Dynatrace: 165,602 shares worth $4.19M.
  • William Blair & Company added most to Arista Networks in Q4 2019, an estimated $24M increase.
  • William Blair & Company's biggest Q4 2019 reduction was Ulta Beauty, cutting an estimated $21.8M.
  • William Blair & Company fully exited Celgene Corp in Q4 2019, selling an estimated $25M.
  • William Blair & Company's ten largest holdings make up 22% of its $19.5B portfolio in Q4 2019.
  • William Blair & Company opened 125 new positions and closed 120 in Q4 2019.
  • William Blair & Company's portfolio value rose 12% quarter-over-quarter to $19.5B.

Based on William Blair & Company's 13F filing for Q4 2019, filed 13 Feb 2020.