We are live on ! Find out more
William Blair & Company

William Blair & Company Portfolio holdings

AUM $38.4B
1-Year Est. Return 25.71%
This Fund
S&P 500
This Quarter Est. Return
+2.39%
1 Year Est. Return
+25.71%
3 Year Est. Return
+88.7%
5 Year Est. Return
+104.53%
10 Year Est. Return
+665.86%
AUM
$26.5B
AUM Growth
-$769M
Cap. Flow
-$1.09B
Cap. Flow %
-4.11%
Top 10 Hldgs %
22.54%
Holding
1,941
New
123
Increased
715
Reduced
742
Closed
84

Top Buys

Rank Stock Value
1
KMX icon
CarMax
KMX
+$73M
2
OSH
Oak Street Health, Inc.
OSH
+$60.6M
3
IRTC icon
iRhythm Holdings
IRTC
+$51.2M
4
DXCM icon
DexCom
DXCM
+$39.4M
5
AON icon
Aon
AON
+$30.5M

Top Sells

Rank Stock Value
1
AAPL icon
Apple
AAPL
+$449M
2
VUG icon
Vanguard Morningstar Growth ETF
VUG
+$271M
3
AMZN icon
Amazon
AMZN
+$157M
4
MSFT icon
Microsoft
MSFT
+$83.3M
5
GOOG icon
Alphabet (Google) Class C
GOOG
+$78.4M

Sector Composition

Rank Sector Weight
1 Technology 25.67%
2 Healthcare 19.26%
3 Financials 11.68%
4 Consumer Discretionary 10.53%
5 Industrials 9.66%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
TAL icon
1876
TAL Education Group
TAL
$6.58B
– –
-2,929
Closed -$209K
TRUP icon
1877
Trupanion
TRUP
$1.33B
– –
-2,500
Closed -$299K
TSN icon
1878
Tyson Foods
TSN
$19.6B
– –
-9,970
Closed -$642K
TXRH icon
1879
Texas Roadhouse
TXRH
$14.1B
– –
-2,975
Closed -$233K
UHS icon
1880
Universal Health Services
UHS
$10.2B
– –
-1,484
Closed -$204K
VRNT
1881
DELISTED
Verint Systems
VRNT
– –
-2,096
Closed -$72K
VTR icon
1882
Ventas
VTR
$45.7B
– –
-4,748
Closed -$233K
VTWV icon
1883
Vanguard Russell 2000 Value ETF
VTWV
$1.37B
– –
-20
Closed -$2K
WCC
1884
WESCO International
WCC
$17.8B
– –
-3,297
Closed -$259K
WES icon
1885
Western Midstream Partners
WES
$19.9B
– –
-13,653
Closed -$189K
WOOD icon
1886
iShares Global Timber & Forestry ETF
WOOD
$269M
$0 ﹤0.01%
+3
New +$251
BWIN
1887
Baldwin Insurance Group
BWIN
$3B
– –
-19,470
Closed -$584K
PETQ
1888
DELISTED
PetIQ, Inc. Class A Common Stock
PETQ
– –
-27,504
Closed -$1.06M
AFIB
1889
DELISTED
Acutus Medical Inc
AFIB
– –
-7,105
Closed -$205K
TDW.WS.A
1890
DELISTED
Tidewater Inc. Series A Warrants to purchase shares of common stock (expiring July 31, 2023)
TDW.WS.A
$0 ﹤0.01%
43
– –
TDW.WS.B
1891
DELISTED
Tidewater Inc. Series B Warrants to purchase shares of common stock (expiring July 31, 2023)
TDW.WS.B
$0 ﹤0.01%
46
– –
BBBY
1892
DELISTED
Bed Bath & Beyond Inc
BBBY
– –
-124,510
Closed -$2.21M
GBT
1893
DELISTED
Global Blood Therapeutics, Inc.
GBT
– –
-22,872
Closed -$991K
NBEV
1894
DELISTED
NewAge, Inc. Common Stock (Delaware)
NBEV
– –
-10,000
Closed -$26K
PBCT
1895
DELISTED
People's United Financial Inc
PBCT
– –
-17,145
Closed -$222K
WIFI
1896
DELISTED
Boingo Wireless, Inc.
WIFI
– –
-30,445
Closed -$387K
FLIR
1897
DELISTED
FLIR Systems, Inc. (DE) Common Stock
FLIR
– –
-8,551
Closed -$375K
GLUU
1898
DELISTED
Glu Mobile Inc.
GLUU
– –
-15,750
Closed -$142K
GNMK
1899
DELISTED
GenMark Diagnostics, Inc
GNMK
– –
-46,984
Closed -$686K
VAR
1900
DELISTED
Varian Medical Systems, Inc.
VAR
– –
-3,589
Closed -$628K
73 74 75
76
77

Similar funds

Parallax Volatility Advisers
Parallax Volatility Advisers San Francisco, California $38.6B AUM 45.89% 1-Year Est. Return
Credit Agricole
Credit Agricole Montrouge Cedex, France $38.1B AUM
Carson Wealth (CWM LLC)
Carson Wealth (CWM LLC) Omaha, Nebraska $38.1B AUM 19.66% 1-Year Est. Return
Nomura Asset Management
Nomura Asset Management Tokyo, Japan $38.8B AUM 30.94% 1-Year Est. Return
Nomura Holdings
Nomura Holdings Tokyo, Japan $37.7B AUM 34.44% 1-Year Est. Return
Fayez Sarofim & Co
Fayez Sarofim & Co Houston, Texas $39.1B AUM 15.14% 1-Year Est. Return
Grantham, Mayo, Van Otterloo & Co (GMO)
Grantham, Mayo, Van Otterloo & Co (GMO) Boston, Massachusetts $39.1B AUM 28.69% 1-Year Est. Return
HF
HRT Financial New York $40.1B AUM 58.22% 1-Year Est. Return

William Blair & Company's Q1 2021 Portfolio in Review

As of Q1 2021, William Blair & Company held 1,941 positions worth $26.5B, down 2.8% from $27.3B the previous quarter. Its ten largest holdings account for 23% of the portfolio.

William Blair & Company withdrew a net $1.09B in Q1 2021, closing 84 positions and reducing 742 holdings. Its most notable exit was HMS Holdings Corp., an estimated $7.64M position sold in full.

By sector, the portfolio is most concentrated in Technology at 26% of assets, down from 28% a quarter earlier, followed by Healthcare and Financials.

Against the trend, William Blair & Company opened a new position in Oak Street Health, Inc. worth $59.1M.

  • William Blair & Company's largest Q1 2021 buy was Oak Street Health, Inc.: 1,089,318 shares worth $59.1M.
  • William Blair & Company added most to CarMax in Q1 2021, an estimated $73M increase.
  • William Blair & Company's biggest Q1 2021 reduction was Apple, cutting an estimated $449M.
  • William Blair & Company fully exited HMS Holdings Corp. in Q1 2021, selling an estimated $7.64M.
  • William Blair & Company's ten largest holdings make up 23% of its $26.5B portfolio in Q1 2021.
  • William Blair & Company opened 123 new positions and closed 84 in Q1 2021.
  • William Blair & Company's portfolio value fell 2.8% quarter-over-quarter to $26.5B.

Based on William Blair & Company's 13F filing for Q1 2021, filed 13 May 2021.