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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
SLQD icon
1801
iShares 0-5 Year Investment Grade Corporate Bond ETF
SLQD
$2.38B
$3K ﹤0.01%
65
– –
DSKEW
1802
DELISTED
Daseke, Inc. Warrant
DSKEW
$3K ﹤0.01%
10,000
– –
COPX icon
1803
Global X Copper Miners ETF NEW
COPX
$8.22B
$2K ﹤0.01%
+50
New +$1.74K
EINC icon
1804
VanEck Energy Income ETF
EINC
$79.5M
$2K ﹤0.01%
38
– –
FALN icon
1805
iShares Fallen Angels USD Bond ETF
FALN
$1.6B
$2K ﹤0.01%
+53
New +$1.55K
IMCV icon
1806
iShares Morningstar Mid-Cap Value ETF
IMCV
$1.16B
$2K ﹤0.01%
30
– –
MLPA icon
1807
Global X MLP ETF
MLPA
$2.29B
$2K ﹤0.01%
66
– –
NORW icon
1808
Global X MSCI Norway ETF
NORW
$87.7M
$2K ﹤0.01%
69
– –
PJP icon
1809
Invesco Pharmaceuticals ETF
PJP
$499M
$2K ﹤0.01%
28
– –
PSP icon
1810
Invesco Global Listed Private Equity ETF
PSP
$248M
$2K ﹤0.01%
25
– –
SDIV icon
1811
Global X SuperDividend ETF
SDIV
$1.21B
$2K ﹤0.01%
38
– –
XRLV
1812
DELISTED
Invesco S&P 500 ex-Rate Sensitive Low Volatility ETF
XRLV
$2K ﹤0.01%
55
– –
XSLV icon
1813
Invesco S&P SmallCap Low Volatility ETF
XSLV
$249M
$2K ﹤0.01%
42
– –
PDCE
1814
DELISTED
PDC Energy, Inc.
PDCE
$2K ﹤0.01%
70
– –
NORW
1815
DELISTED
Global X MSCI Norway ETF
NORW
$2K ﹤0.01%
130
– –
EPOL icon
1816
iShares MSCI Poland ETF
EPOL
$825M
$1K ﹤0.01%
55
– –
FIW icon
1817
First Trust Water ETF
FIW
$1.92B
$1K ﹤0.01%
9
-4
-31% -$304
FTEC icon
1818
Fidelity MSCI Information Technology Index ETF
FTEC
$21.3B
$1K ﹤0.01%
6
– –
RING icon
1819
iShares MSCI Global Gold Miners ETF
RING
$2.48B
$1K ﹤0.01%
50
– –
SDS icon
1820
ProShares UltraShort S&P500
SDS
$370M
$1K ﹤0.01%
3
– –
XES icon
1821
State Street SPDR S&P Oil & Gas Equipment & Services ETF
XES
$390M
$1K ﹤0.01%
23
– –
FNI
1822
DELISTED
First Trust Chindia ETF
FNI
$1K ﹤0.01%
12
– –
ANGL icon
1823
VanEck Fallen Angel High Yield Bond ETF
ANGL
$3.11B
– –
-236
Closed -$8K
ASRT
1824
DELISTED
Assertio
ASRT
– –
-220
Closed -$5K
AVDL
1825
DELISTED
Avadel Pharmaceuticals
AVDL
– –
-10,250
Closed -$68K
71 72
73
74 75

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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.