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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
+17.39%
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
$16.4B
AUM Growth
+$2.69B
Cap. Flow
+$462M
Cap. Flow %
2.81%
Top 10 Hldgs %
21%
Holding
1,770
New
129
Increased
755
Reduced
489
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
TEAM icon
126
Atlassian
TEAM
$28.6B
$28.4M 0.17%
252,578
+19,160
+8% +$1.96M
PAYX icon
127
Paychex
PAYX
$41.9B
$27.7M 0.17%
345,702
-16,529
-5% -$1.22M
IWM icon
128
iShares Russell 2000 ETF
IWM
$82.8B
$27.7M 0.17%
181,094
+11,249
+7% +$1.69M
T icon
129
AT&T
T
$157B
$27.7M 0.17%
1,170,419
+103,370
+10% +$2.38M
CME icon
130
CME Group
CME
$94.9B
$27.1M 0.17%
164,866
+40
+0% +$7.07K
INFO
131
DELISTED
IHS Markit Ltd. Common Shares
INFO
$27.1M 0.17%
497,708
+25,239
+5% +$1.32M
KMPR icon
132
Kemper
KMPR
$1.72B
$26.6M 0.16%
348,851
+115,159
+49% +$8.83M
ATVI
133
DELISTED
Activision Blizzard
ATVI
$26.4M 0.16%
580,067
+237,865
+70% +$10.8M
ORLY icon
134
O'Reilly Automotive
ORLY
$75.9B
$26.2M 0.16%
1,012,665
-27,720
-3% -$671K
MAR icon
135
Marriott International
MAR
$93.9B
$26.1M 0.16%
208,557
+6,117
+3% +$720K
NKE icon
136
Nike
NKE
$62.3B
$26.1M 0.16%
309,536
+20,585
+7% +$1.7M
DD icon
137
DuPont de Nemours
DD
$19.9B
$26.1M 0.16%
193,057
+17,233
+10% +$2.39M
EPD icon
138
Enterprise Products Partners
EPD
$81.3B
$26.1M 0.16%
895,584
+6,117
+0.7% +$171K
CPAY icon
139
Corpay
CPAY
$25.7B
$25.7M 0.16%
104,399
+12,386
+13% +$2.68M
SU icon
140
Suncor Energy
SU
$74.8B
$25.7M 0.16%
791,682
+1,705
+0.2% +$55.5K
IEFA icon
141
iShares Core MSCI EAFE ETF
IEFA
$194B
$25.4M 0.16%
418,577
-36,819
-8% -$2.17M
HEI icon
142
HEICO Corp
HEI
$51.3B
$25M 0.15%
263,130
+4,387
+2% +$383K
VNQ icon
143
Vanguard Real Estate ETF
VNQ
$39.1B
$24.5M 0.15%
281,946
+38,220
+16% +$3.16M
TIP icon
144
iShares TIPS Bond ETF
TIP
$14.5B
$24.4M 0.15%
215,492
-21,522
-9% -$2.39M
SMAR
145
DELISTED
Smartsheet Inc.
SMAR
$24.1M 0.15%
590,790
+537,885
+1,017% +$18.6M
USFD icon
146
US Foods
USFD
$22.1B
$24M 0.15%
688,336
+59,731
+10% +$2.05M
WAB icon
147
Wabtec
WAB
$50.1B
$23.8M 0.15%
322,962
+60,923
+23% +$4.39M
ILMN icon
148
Illumina
ILMN
$29.8B
$23.3M 0.14%
77,214
+5,663
+8% +$1.65M
IUSV icon
149
iShares Core S&P US Value ETF
IUSV
$27.6B
$23.1M 0.14%
421,294
+9,162
+2% +$490K
BRK.A icon
150
Berkshire Hathaway Class A
BRK.A
$1.11T
$22.9M 0.14%
71
-3
-4% -$908K
4 5
6
7 8

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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, 755 increased, 489 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.