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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
+23.04%
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
$16.4B
AUM Growth
+$2.69B
Cap. Flow
+$306M
Cap. Flow %
1.86%
Top 10 Hldgs %
21%
Holding
1,770
New
129
Increased
754
Reduced
490
Closed
65

Top Buys

Rank Stock Value
1
FISV
Fiserv Inc
FISV
+$65.4M
2
P
Everpure Inc
P
+$35.3M
3
PYPL icon
PayPal
PYPL
+$30.4M
4
BA icon
Boeing
BA
+$28.3M
5
TWLO icon
Twilio
TWLO
+$24.2M

Top Sells

Rank Stock Value
1
TTE icon
TotalEnergies
TTE
+$155M
2
RHT
Red Hat Inc
RHT
+$73.4M
3
ULTI
Ultimate Software Group Inc
ULTI
+$70.6M
4
INGN icon
Inogen
INGN
+$25.8M
5
CELG
Celgene Corp
CELG
+$20.1M

Sector Composition

Rank Sector Weight
1 Technology 22.65%
2 Healthcare 17.38%
3 Financials 12.48%
4 Consumer Discretionary 9.87%
5 Industrials 9.37%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
CNK icon
676
Cinemark Holdings
CNK
$4.32B
$1.22M 0.01%
30,527
-324
-1% -$12.7K
BPOP icon
677
Popular Inc
BPOP
$11.1B
$1.22M 0.01%
23,400
– –
HEWJ icon
678
iShares Currency Hedged MSCI Japan ETF
HEWJ
$744M
$1.22M 0.01%
39,623
+1
+0% +$30
CGNX icon
679
Cognex
CGNX
$11.3B
$1.22M 0.01%
23,933
– –
ENS icon
680
EnerSys
ENS
$6.99B
$1.22M 0.01%
+18,656
New +$1.41M
NYT icon
681
New York Times
NYT
$10.2B
$1.21M 0.01%
+36,706
New +$1.09M
MKTX icon
682
MarketAxess Holdings
MKTX
$5.72B
$1.21M 0.01%
4,896
-445
-8% -$101K
MIC
683
DELISTED
Macquarie Infrastructure Holdings, LLC
MIC
$1.2M 0.01%
29,201
+16,933
+138% +$695K
DMRC icon
684
Digimarc Corp
DMRC
$178M
$1.2M 0.01%
38,352
-9,098
-19% -$226K
AEP icon
685
American Electric Power
AEP
$68.4B
$1.2M 0.01%
14,278
-122
-0.8% -$9.7K
IONS icon
686
Ionis Pharmaceuticals
IONS
$9.4B
$1.19M 0.01%
14,669
+179
+1% +$11.5K
MSM icon
687
MSC Industrial Direct
MSM
$6.86B
$1.19M 0.01%
14,339
-3,115
-18% -$257K
ADI icon
688
Analog Devices
ADI
$190B
$1.18M 0.01%
11,228
-1,268
-10% -$127K
DOMO icon
689
Domo
DOMO
$184M
$1.18M 0.01%
29,135
-32,662
-53% -$1M
BCE icon
690
BCE
BCE
$21.2B
$1.17M 0.01%
26,406
-550
-2% -$23.7K
CAH icon
691
Cardinal Health
CAH
$55.4B
$1.17M 0.01%
24,340
+1,147
+5% +$57.5K
DHI icon
692
D.R. Horton
DHI
$42.3B
$1.16M 0.01%
28,026
-30,892
-52% -$1.21M
IGIB icon
693
iShares 5-10 Year Investment Grade Corporate Bond ETF
IGIB
$18.6B
$1.15M 0.01%
10,337
-3,293
-24% -$177K
GGG icon
694
Graco
GGG
$13.5B
$1.14M 0.01%
23,094
-2,481
-10% -$112K
BUSE icon
695
First Busey Corp
BUSE
$2.58B
$1.14M 0.01%
46,820
+1,375
+3% +$35.7K
FUN icon
696
Cedar Fair
FUN
$1.67B
$1.14M 0.01%
21,680
+1,019
+5% +$54.4K
WAT icon
697
Waters Corp
WAT
$39.9B
$1.14M 0.01%
4,515
-1,528
-25% -$348K
PRU icon
698
Prudential Financial
PRU
$41.8B
$1.13M 0.01%
12,319
+1,133
+10% +$104K
QYLD icon
699
Global X NASDAQ-100 Covered Call ETF
QYLD
$8.26B
$1.13M 0.01%
49,829
-27,596
-36% -$613K
ECPG icon
700
Encore Capital Group
ECPG
$2.13B
$1.13M 0.01%
41,482
-500
-1% -$14.9K
26 27
28
29 30

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William Blair & Company's Q1 2019 Portfolio in Review

As of Q1 2019, William Blair & Company held 1,770 positions worth $16.4B, up 20% from $13.7B the previous quarter. Its ten largest holdings account for 21% of the portfolio.

William Blair & Company's Q1 2019 filing shows 129 new, 754 increased, 490 reduced and 65 closed positions. Its largest new stake was Western Midstream Partners: 147,267 shares worth $4.62M. The largest sale was TotalEnergies, an estimated $155M.

By sector, the portfolio is most concentrated in Technology at 23% of assets, up from 21% a quarter earlier, followed by Healthcare and Financials.

  • William Blair & Company's largest Q1 2019 buy was Western Midstream Partners: 147,267 shares worth $4.62M.
  • William Blair & Company added most to Fiserv Inc in Q1 2019, an estimated $65.4M increase.
  • William Blair & Company's biggest Q1 2019 reduction was TotalEnergies, cutting an estimated $155M.
  • William Blair & Company fully exited MB Financial Corp in Q1 2019, selling an estimated $7.72M.
  • William Blair & Company's ten largest holdings make up 21% of its $16.4B portfolio in Q1 2019.
  • William Blair & Company opened 129 new positions and closed 65 in Q1 2019.
  • William Blair & Company's portfolio value rose 20% quarter-over-quarter to $16.4B.

Based on William Blair & Company's 13F filing for Q1 2019, filed 14 May 2019.