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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
ALRM icon
251
Alarm.com
ALRM
$2.78B
$10.2M 0.06%
157,055
+11,036
+8% +$669K
VB icon
252
Vanguard Morningstar Small-Cap ETF
VB
$81.3B
$10.1M 0.06%
66,325
+2,419
+4% +$360K
BIDU icon
253
Baidu
BIDU
$37.1B
$10.1M 0.06%
61,413
+1,147
+2% +$192K
RAMP icon
254
LiveRamp
RAMP
$2.3B
$10.1M 0.06%
185,493
+3,785
+2% +$188K
TECH icon
255
Bio-Techne
TECH
$11.2B
$9.99M 0.06%
201,328
+7,788
+4% +$350K
IRDM icon
256
Iridium Communications
IRDM
$5.12B
$9.99M 0.06%
377,904
-3,222
-0.8% -$69.3K
DSI icon
257
iShares MSCI KLD 400 Social ETF
DSI
$5.51B
$9.91M 0.06%
187,888
-216,678
-54% -$11M
MU icon
258
Micron Technology
MU
$996B
$9.88M 0.06%
238,970
+9,561
+4% +$369K
XLV icon
259
State Street Health Care Select Sector SPDR ETF
XLV
$42.4B
$9.86M 0.06%
107,411
-21,237
-17% -$1.91M
CCOI icon
260
Cogent Communications
CCOI
$546M
$9.83M 0.06%
181,235
+4,424
+3% +$218K
USB icon
261
US Bancorp
USB
$99.4B
$9.83M 0.06%
203,909
-26,481
-11% -$1.33M
IUSG icon
262
iShares Core S&P US Growth ETF
IUSG
$33.4B
$9.79M 0.06%
132,900
-81,162
-38% -$4.66M
UN
263
DELISTED
Unilever NV New York Registry Shares
UN
$9.71M 0.06%
166,544
+28,740
+21% +$1.58M
TJX icon
264
TJX Companies
TJX
$179B
$9.68M 0.06%
181,874
+10,750
+6% +$536K
TTE icon
265
TotalEnergies
TTE
$191B
$9.58M 0.06%
172,193
-14,470,398
-99% -$155M
SJM icon
266
J.M. Smucker
SJM
$12.7B
$9.54M 0.06%
81,906
+3,566
+5% +$373K
CHD icon
267
Church & Dwight Co
CHD
$24.5B
$9.52M 0.06%
133,581
+8
+0% +$526
CB icon
268
Chubb
CB
$137B
$9.45M 0.06%
67,436
-11,601
-15% -$1.54M
RDS.A
269
DELISTED
Royal Dutch Shell PLC ADS Class A
RDS.A
$9.32M 0.06%
148,884
+9,495
+7% +$587K
ROP icon
270
Roper Technologies
ROP
$39.3B
$9.25M 0.06%
27,038
+1,854
+7% +$563K
MRCC
271
DELISTED
Monroe Capital Corp
MRCC
$9.2M 0.06%
757,717
+61,292
+9% +$735K
WP
272
DELISTED
Worldpay, Inc.
WP
$9.18M 0.06%
80,850
+1,472
+2% +$133K
COP icon
273
ConocoPhillips
COP
$142B
$9.03M 0.06%
135,271
+1,211
+0.9% +$81.5K
FITB
274
Fifth Third Bancorp
FITB
$51.7B
$8.91M 0.05%
353,230
+203,153
+135% +$5.41M
IWF icon
275
iShares Russell 1000 Growth ETF
IWF
$127B
$8.85M 0.05%
233,860
-24,836
-10% -$892K
9 10
11
12 13

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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.