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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
SPDW icon
526
State Street SPDR Portfolio Developed World ex-US ETF
SPDW
$41.2B
$2.83M 0.01%
90,176
+2,848
+3% +$86.7K
MPC icon
527
Marathon Petroleum
MPC
$84B
$2.81M 0.01%
46,581
+8,935
+24% +$559K
HDV
528
iShares Core High Dividend ETF
HDV
$14.8B
$2.8M 0.01%
142,915
-625
-0.4% -$11.9K
THS
529
DELISTED
Treehouse Foods
THS
$2.8M 0.01%
+57,709
New +$2.95M
FND icon
530
Floor & Decor
FND
$6.39B
$2.79M 0.01%
54,890
-1,382
-2% -$64.8K
CDK
531
DELISTED
CDK Global, Inc.
CDK
$2.77M 0.01%
50,596
+5,097
+11% +$262K
IHI icon
532
iShares US Medical Devices ETF
IHI
$3.36B
$2.77M 0.01%
62,790
+3,552
+6% +$149K
JLL icon
533
Jones Lang LaSalle
JLL
$16.7B
$2.76M 0.01%
15,844
-10,151
-39% -$1.6M
PLAN
534
DELISTED
Anaplan, Inc.
PLAN
$2.73M 0.01%
52,094
+18,982
+57% +$942K
DBI icon
535
Designer Brands
DBI
$336M
$2.72M 0.01%
172,530
-44,788
-21% -$742K
RSG icon
536
Republic Services
RSG
$64.5B
$2.69M 0.01%
30,031
+464
+2% +$40.6K
PHR icon
537
Phreesia
PHR
$706M
$2.67M 0.01%
100,273
+28,569
+40% +$790K
INXN
538
DELISTED
Interxion Holding N.V.
INXN
$2.67M 0.01%
31,804
-871
-3% -$72.7K
VOD icon
539
Vodafone
VOD
$37B
$2.65M 0.01%
137,272
-43,993
-24% -$877K
BBBY
540
DELISTED
Bed Bath & Beyond Inc
BBBY
$2.63M 0.01%
+152,100
New +$2.13M
GLW icon
541
Corning
GLW
$135B
$2.61M 0.01%
89,678
-58,545
-39% -$1.7M
ROST icon
542
Ross Stores
ROST
$81.6B
$2.6M 0.01%
22,298
+1,214
+6% +$137K
ZD icon
543
Ziff Davis
ZD
$1.88B
$2.58M 0.01%
31,683
+11,503
+57% +$951K
PFPT
544
DELISTED
Proofpoint, Inc.
PFPT
$2.57M 0.01%
22,398
+4,400
+24% +$525K
HAL icon
545
Halliburton
HAL
$27.1B
$2.56M 0.01%
104,657
-18,976
-15% -$400K
UBER icon
546
Uber
UBER
$143B
$2.54M 0.01%
85,278
+55,350
+185% +$1.64M
MTW icon
547
Manitowoc
MTW
$510M
$2.5M 0.01%
142,751
– –
CHRW icon
548
C.H. Robinson
CHRW
$17.1B
$2.48M 0.01%
31,722
+58
+0.2% +$4.62K
PDP icon
549
Invesco Dorsey Wright Momentum ETF
PDP
$1.49B
$2.48M 0.01%
38,510
+2,000
+5% +$124K
PFF icon
550
iShares Preferred and Income Securities ETF
PFF
$13.2B
$2.45M 0.01%
65,217
-5,985
-8% -$223K
20 21
22
23 24

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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.