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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
BCS icon
1151
Barclays
BCS
$94.1B
$292K ﹤0.01%
37,252
-908
-2% -$7.29K
IMMU
1152
DELISTED
Immunomedics Inc
IMMU
$288K ﹤0.01%
+15,000
New +$242K
MOS icon
1153
The Mosaic Company
MOS
$7.38B
$287K ﹤0.01%
10,521
-2,469
-19% -$75.3K
PNW icon
1154
Pinnacle West Capital
PNW
$12.4B
$287K ﹤0.01%
+3,005
New +$271K
FTS icon
1155
Fortis
FTS
$28.6B
$285K ﹤0.01%
7,701
– –
AOS icon
1156
A.O. Smith
AOS
$8.7B
$283K ﹤0.01%
+5,307
New +$264K
MCK icon
1157
McKesson
MCK
$103B
$283K ﹤0.01%
2,417
+316
+15% +$39K
MLKN icon
1158
MillerKnoll
MLKN
$1.67B
$282K ﹤0.01%
8,024
-1,678
-17% -$58.5K
FUL icon
1159
H.B. Fuller
FUL
$3.28B
$280K ﹤0.01%
5,747
– –
IVOG icon
1160
Vanguard S&P Mid-Cap 400 Growth ETF
IVOG
$1.7B
$279K ﹤0.01%
+4,120
New +$268K
UA icon
1161
Under Armour Class C
UA
$2.53B
$279K ﹤0.01%
14,760
+5,051
+52% +$95.5K
AEF
1162
abrdn Emerging Markets Equity Income Fund
AEF
$364M
$277K ﹤0.01%
38,125
-25
-0.1% -$177
MDB icon
1163
MongoDB
MDB
$31.9B
$277K ﹤0.01%
+1,885
New +$193K
MPT
1164
Medical Properties Trust
MPT
$2.79B
$277K ﹤0.01%
14,982
+1,889
+14% +$33.7K
AEE icon
1165
Ameren
AEE
$30.2B
$276K ﹤0.01%
+3,757
New +$262K
PPL
1166
PPL Corp
PPL
$26.7B
$276K ﹤0.01%
8,708
+1,624
+23% +$50.5K
RSPH icon
1167
Invesco S&P 500 Equal Weight Health Care ETF
RSPH
$780M
$276K ﹤0.01%
14,000
– –
TBT icon
1168
ProShares Trust UltraShort Lehman 20+ Year Treasury
TBT
$313M
$276K ﹤0.01%
8,545
-224
-3% -$7.84K
ARGX icon
1169
argenx
ARGX
$54.6B
$275K ﹤0.01%
+2,200
New +$259K
BIV icon
1170
Vanguard Intermediate-Term Bond ETF
BIV
$28.9B
$274K ﹤0.01%
3,257
-1,073
-25% -$88.3K
WDC icon
1171
Western Digital
WDC
$149B
$273K ﹤0.01%
+7,520
New +$257K
NXPI icon
1172
NXP Semiconductors
NXPI
$60.3B
$272K ﹤0.01%
+3,082
New +$271K
BWX icon
1173
State Street SPDR Bloomberg International Treasury Bond ETF
BWX
$1.32B
$270K ﹤0.01%
9,674
+591
+7% +$16.4K
HUBG icon
1174
HUB Group
HUBG
$2.92B
$270K ﹤0.01%
13,200
– –
NOBL icon
1175
ProShares S&P 500 Dividend Aristocrats ETF
NOBL
$12B
$270K ﹤0.01%
7,958
+1,628
+26% +$52.7K
45 46
47
48 49

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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.