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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
EQNR icon
1076
Equinor
EQNR
$92.4B
$392K ﹤0.01%
19,689
-111
-0.6% -$2.1K
VIOO icon
1077
Vanguard S&P Small-Cap 600 ETF
VIOO
$4.25B
$392K ﹤0.01%
5,150
+244
+5% +$18K
XT icon
1078
iShares Future Exponential Technologies ETF
XT
$3.97B
$392K ﹤0.01%
9,172
-80
-0.9% -$3.26K
BY icon
1079
Byline Bancorp
BY
$1.76B
$391K ﹤0.01%
20,000
-25,176
-56% -$460K
BAC.PRL icon
1080
Bank of America Series L
BAC.PRL
$3.99B
$390K ﹤0.01%
269
-30
-10% -$44.4K
NTAP icon
1081
NetApp
NTAP
$37.2B
$389K ﹤0.01%
6,256
+637
+11% +$37.2K
INN
1082
Summit Hotel Properties
INN
$700M
$387K ﹤0.01%
31,354
+1,000
+3% +$12K
ASML icon
1083
ASML
ASML
$669B
$386K ﹤0.01%
1,305
-7
-0.5% -$1.89K
MOS icon
1084
The Mosaic Company
MOS
$7.33B
$381K ﹤0.01%
17,628
-1,120
-6% -$22.2K
TLTD icon
1085
FlexShares Morningstar Developed Markets ex-US Factor Tilt Index Fund
TLTD
$689M
$381K ﹤0.01%
5,871
-294
-5% -$18.5K
HALO icon
1086
Halozyme
HALO
$12.2B
$380K ﹤0.01%
+21,443
New +$371K
VFVA icon
1087
Vanguard US Value Factor ETF
VFVA
$914M
$378K ﹤0.01%
4,818
+537
+13% +$40.1K
CNC icon
1088
Centene
CNC
$32.5B
$377K ﹤0.01%
5,990
+425
+8% +$23.1K
HCAT icon
1089
Health Catalyst
HCAT
$128M
$377K ﹤0.01%
+10,855
New +$359K
PPL
1090
PPL Corp
PPL
$26.7B
$377K ﹤0.01%
10,503
+2,763
+36% +$92.6K
DES icon
1091
WisdomTree US SmallCap Dividend Fund
DES
$2.22B
$376K ﹤0.01%
13,122
+12
+0.1% +$335
FXI icon
1092
iShares China Large-Cap ETF
FXI
$4.31B
$376K ﹤0.01%
8,621
-1,155
-12% -$48.1K
OTEX icon
1093
Open Text
OTEX
$6.04B
$372K ﹤0.01%
8,445
+445
+6% +$18.7K
MTCH icon
1094
Match Group
MTCH
$8.55B
$370K ﹤0.01%
4,508
-1,160
-20% -$84.4K
SPG icon
1095
Simon Property Group
SPG
$72.3B
$370K ﹤0.01%
2,481
+202
+9% +$30.3K
AYI icon
1096
Acuity Brands
AYI
$10.8B
$369K ﹤0.01%
2,672
-276
-9% -$35.5K
LBTYK icon
1097
Liberty Global Class C
LBTYK
$3.49B
$369K ﹤0.01%
16,931
-1,886
-10% -$42.4K
VOOG icon
1098
Vanguard S&P 500 Growth ETF
VOOG
$27.2B
$368K ﹤0.01%
12,672
+10,872
+604% +$302K
BIV icon
1099
Vanguard Intermediate-Term Bond ETF
BIV
$28.9B
$367K ﹤0.01%
4,211
+1,838
+77% +$161K
CASY icon
1100
Casey's General Stores
CASY
$30.9B
$367K ﹤0.01%
+2,309
New +$382K
42 43
44
45 46

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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.