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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
NATI
776
DELISTED
National Instruments Corp
NATI
$1M 0.01%
23,611
+11,055
+88% +$462K
ALBO
777
DELISTED
Albireo Pharma Inc
ALBO
$994K 0.01%
39,088
-7,827
-17% -$157K
AGN
778
DELISTED
Allergan plc
AGN
$992K 0.01%
5,190
-731
-12% -$132K
ASMB icon
779
Assembly Biosciences
ASMB
$530M
$988K 0.01%
4,024
+3,191
+383% +$588K
IONS icon
780
Ionis Pharmaceuticals
IONS
$9.22B
$986K 0.01%
16,320
+1,742
+12% +$104K
CAG icon
781
Conagra Brands
CAG
$7.17B
$983K 0.01%
28,700
-27,483
-49% -$796K
CWB icon
782
State Street SPDR Bloomberg Convertible Securities ETF
CWB
$5.68B
$983K 0.01%
17,706
+730
+4% +$39.3K
PAYC icon
783
Paycom
PAYC
$10B
$983K 0.01%
3,714
-1,042
-22% -$247K
EFV icon
784
iShares MSCI EAFE Value ETF
EFV
$29.4B
$974K 0.01%
19,499
-1,560
-7% -$76.5K
SCHG icon
785
Schwab US Large-Cap Growth ETF
SCHG
$62.7B
$974K 0.01%
83,856
-800
-0.9% -$8.82K
URTH icon
786
iShares MSCI World ETF
URTH
$8.26B
$970K 0.01%
9,821
+3,044
+45% +$290K
NTR icon
787
Nutrien
NTR
$31B
$961K ﹤0.01%
20,051
-625
-3% -$30.2K
SAP icon
788
SAP
SAP
$238B
$957K ﹤0.01%
7,139
+5,019
+237% +$660K
ACWV icon
789
iShares MSCI Global Min Vol Factor ETF
ACWV
$3.38B
$952K ﹤0.01%
9,932
-102
-1% -$9.71K
VHT icon
790
Vanguard Health Care ETF
VHT
$18.5B
$952K ﹤0.01%
4,966
+38
+0.8% +$6.81K
XLP icon
791
State Street Consumer Staples Select Sector SPDR ETF
XLP
$14.9B
$949K ﹤0.01%
15,074
-575
-4% -$35.4K
WIFI
792
DELISTED
Boingo Wireless, Inc.
WIFI
$943K ﹤0.01%
86,095
-56,170
-39% -$610K
HEWJ icon
793
iShares Currency Hedged MSCI Japan ETF
HEWJ
$742M
$940K ﹤0.01%
28,499
+2
+0% +$65
UAA icon
794
Under Armour
UAA
$2.6B
$940K ﹤0.01%
43,515
-31,299
-42% -$608K
UDR icon
795
UDR
UDR
$12.4B
$937K ﹤0.01%
20,057
+14,505
+261% +$697K
PRF icon
796
Invesco FTSE RAFI US 1000 ETF
PRF
$10B
$935K ﹤0.01%
36,880
– –
IJS icon
797
iShares S&P Small-Cap 600 Value ETF
IJS
$8.35B
$928K ﹤0.01%
11,542
-512
-4% -$39.7K
IVZ icon
798
Invesco
IVZ
$14B
$925K ﹤0.01%
+51,445
New +$878K
BCO icon
799
Brink's
BCO
$4.6B
$923K ﹤0.01%
+10,180
New +$899K
FLS icon
800
Flowserve
FLS
$10.2B
$917K ﹤0.01%
+18,423
New +$882K
30 31
32
33 34

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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.