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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
XLK icon
351
State Street Technology Select Sector SPDR ETF
XLK
$122B
$6.13M 0.03%
133,742
+2,826
+2% +$121K
CUB
352
DELISTED
Cubic Corporation
CUB
$6.11M 0.03%
96,143
+28,856
+43% +$1.95M
DIA icon
353
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
$46.3B
$6.11M 0.03%
21,430
+13,553
+172% +$3.73M
RF icon
354
Regions Financial
RF
$26.8B
$6.08M 0.03%
354,341
-8,499
-2% -$140K
WORK
355
DELISTED
Slack Technologies, Inc.
WORK
$5.99M 0.03%
266,652
-70,774
-21% -$1.58M
HCSG icon
356
Healthcare Services Group
HCSG
$1.51B
$5.99M 0.03%
246,261
-388
-0.2% -$9.61K
IVW icon
357
iShares S&P 500 Growth ETF
IVW
$77B
$5.98M 0.03%
123,604
+6,668
+6% +$309K
IWO icon
358
iShares Russell 2000 Growth ETF
IWO
$14.8B
$5.98M 0.03%
27,905
+103
+0.4% +$20.9K
VRTX icon
359
Vertex Pharmaceuticals
VRTX
$123B
$5.97M 0.03%
27,288
+4,945
+22% +$1M
BND icon
360
Vanguard Total Bond Market
BND
$157B
$5.91M 0.03%
70,506
-9,436
-12% -$793K
CHWY icon
361
Chewy
CHWY
$9.59B
$5.86M 0.03%
201,887
-59,407
-23% -$1.52M
BDSI
362
DELISTED
BioDelivery Sciences International, Inc.
BDSI
$5.84M 0.03%
924,755
+27,410
+3% +$161K
DE icon
363
Deere & Co
DE
$166B
$5.83M 0.03%
33,641
-38
-0.1% -$6.54K
IWN icon
364
iShares Russell 2000 Value ETF
IWN
$14.5B
$5.7M 0.03%
44,315
+5,348
+14% +$661K
BALL icon
365
Ball Corp
BALL
$16.7B
$5.7M 0.03%
88,100
+3,097
+4% +$210K
RAMP icon
366
LiveRamp
RAMP
$2.3B
$5.65M 0.03%
117,499
-75,340
-39% -$3.39M
GM icon
367
General Motors
GM
$76.3B
$5.62M 0.03%
153,531
-29,640
-16% -$1.08M
DD icon
368
DuPont de Nemours
DD
$19.5B
$5.62M 0.03%
69,702
-13,000
-16% -$1.08M
FNF icon
369
Fidelity National Financial
FNF
$14.1B
$5.62M 0.03%
128,807
-19,115
-13% -$848K
RGLD icon
370
Royal Gold
RGLD
$18.5B
$5.59M 0.03%
45,689
-60
-0.1% -$7.1K
AMAT icon
371
Applied Materials
AMAT
$419B
$5.57M 0.03%
91,218
+11,339
+14% +$637K
WMGI
372
DELISTED
Wright Medical Group Inc
WMGI
$5.52M 0.03%
181,221
+120,858
+200% +$3.16M
LFUS icon
373
Littelfuse
LFUS
$11.7B
$5.52M 0.03%
28,861
-486
-2% -$89.2K
EPAM icon
374
EPAM Systems
EPAM
$4.86B
$5.49M 0.03%
25,891
+1,306
+5% +$257K
PUK icon
375
Prudential
PUK
$34.7B
$5.47M 0.03%
148,092
+49,961
+51% +$1.76M
13 14
15
16 17

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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.