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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
+563.35%
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
NVRO
401
DELISTED
NEVRO CORP.
NVRO
$4.72M 0.02%
40,202
-5,171
-11% -$512K
TAN icon
402
Invesco Solar ETF
TAN
$1.45B
$4.71M 0.02%
152,967
-7,018
-4% -$203K
ZM icon
403
Zoom
ZM
$29.5B
$4.71M 0.02%
69,208
+21,440
+45% +$1.48M
WEC icon
404
WEC Energy
WEC
$35.3B
$4.71M 0.02%
51,034
+5,722
+13% +$522K
KSS icon
405
Kohl's
KSS
$2.23B
$4.68M 0.02%
91,956
-2,157
-2% -$110K
RHI icon
406
Robert Half
RHI
$4.15B
$4.67M 0.02%
73,917
-100
-0.1% -$5.81K
MORN icon
407
Morningstar
MORN
$7.48B
$4.64M 0.02%
30,684
+1
+0% +$154
CERN
408
DELISTED
Cerner Corp
CERN
$4.64M 0.02%
63,220
+24,069
+61% +$1.66M
GKOS icon
409
Glaukos
GKOS
$10.1B
$4.64M 0.02%
85,134
+12,944
+18% +$787K
VGT icon
410
Vanguard Information Technology ETF
VGT
$147B
$4.61M 0.02%
150,712
-3,632
-2% -$104K
ETN icon
411
Eaton
ETN
$174B
$4.52M 0.02%
47,709
+1,828
+4% +$162K
ENS icon
412
EnerSys
ENS
$6.92B
$4.5M 0.02%
60,142
-4,838
-7% -$335K
BAX icon
413
Baxter International
BAX
$14.1B
$4.47M 0.02%
53,425
+414
+0.8% +$34.3K
PHO icon
414
Invesco Water Resources ETF
PHO
$2.08B
$4.46M 0.02%
115,582
-199
-0.2% -$7.38K
WM icon
415
Waste Management
WM
$89.7B
$4.46M 0.02%
39,182
+5,627
+17% +$635K
BAH icon
416
Booz Allen Hamilton
BAH
$8.65B
$4.46M 0.02%
62,679
+35,379
+130% +$2.52M
SO icon
417
Southern Company
SO
$107B
$4.46M 0.02%
69,945
+11,973
+21% +$742K
G icon
418
Genpact
G
$6.07B
$4.43M 0.02%
105,088
+10,995
+12% +$439K
SITE icon
419
SiteOne Landscape Supply
SITE
$4.45B
$4.39M 0.02%
48,425
-2,068
-4% -$175K
PCYO icon
420
Pure Cycle
PCYO
$255M
$4.32M 0.02%
342,755
+1,400
+0.4% +$16.4K
MGK icon
421
Vanguard Morningstar Mega Cap Growth ETF
MGK
$33.9B
$4.31M 0.02%
147,805
+85
+0.1% +$2.35K
CRSP icon
422
CRISPR Therapeutics
CRSP
$5.07B
$4.3M 0.02%
70,578
+10,928
+18% +$597K
D icon
423
Dominion Energy
D
$60B
$4.3M 0.02%
51,885
-10,552
-17% -$862K
AKAM icon
424
Akamai
AKAM
$17.9B
$4.29M 0.02%
49,671
+251
+0.5% +$21.9K
ZBH icon
425
Zimmer Biomet
ZBH
$19B
$4.23M 0.02%
29,109
-1,613
-5% -$223K
15 16
17
18 19

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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.