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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

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
WBT
976
DELISTED
Welbilt, Inc.
WBT
$777K ﹤0.01%
47,817
-824
-2% -$12.4K
DG icon
977
Dollar General
DG
$26.9B
$776K ﹤0.01%
3,828
+160
+4% +$31.8K
CORP icon
978
PIMCO Investment Grade Corporate Bond Index Exchange-Traded Fund
CORP
$1.58B
$775K ﹤0.01%
6,957
-59,941
-90% -$6.82M
IBDO
979
DELISTED
iShares iBonds Dec 2023 Term Corporate ETF
IBDO
$774K ﹤0.01%
29,600
COHU icon
980
Cohu
COHU
$2.76B
$771K ﹤0.01%
18,428
CIT
981
DELISTED
CIT Group Inc.
CIT
$770K ﹤0.01%
14,947
+4,920
+49% +$221K
LNT icon
982
Alliant Energy
LNT
$18.2B
$764K ﹤0.01%
14,103
-7,075
-33% -$352K
BLDR icon
983
Builders FirstSource
BLDR
$7.91B
$762K ﹤0.01%
16,440
-513
-3% -$21.8K
ACWX icon
984
iShares MSCI ACWI ex US ETF
ACWX
$12B
$760K ﹤0.01%
13,772
+9,726
+240% +$538K
SCHF icon
985
Schwab International Equity ETF
SCHF
$69.3B
$756K ﹤0.01%
40,196
-1,826
-4% -$34.1K
EYE icon
986
National Vision
EYE
$1.51B
$755K ﹤0.01%
17,226
+42
+0.2% +$2K
LMND icon
987
Lemonade
LMND
$4.1B
$751K ﹤0.01%
8,061
+5,616
+230% +$725K
HASI icon
988
Hannon Armstrong Sustainable Infrastructure Capital
HASI
$5.44B
$746K ﹤0.01%
13,298
-2,661
-17% -$160K
SUSB icon
989
iShares ESG Aware 1-5 Year USD Corporate Bond ETF
SUSB
$1.3B
$745K ﹤0.01%
28,677
+2
+0% +$52
NDAQ icon
990
Nasdaq
NDAQ
$54.6B
$744K ﹤0.01%
15,144
+408
+3% +$19.4K
AFL icon
991
Aflac
AFL
$60.7B
$742K ﹤0.01%
14,507
-2,936
-17% -$141K
DGRO icon
992
iShares Core Dividend Growth ETF
DGRO
$43.9B
$739K ﹤0.01%
15,300
-673
-4% -$31.1K
NGG icon
993
National Grid
NGG
$81.6B
$739K ﹤0.01%
14,105
+165
+1% +$8.61K
GRMN
994
Garmin
GRMN
$60.2B
$738K ﹤0.01%
5,599
+904
+19% +$112K
SLF icon
995
Sun Life Financial
SLF
$44.8B
$736K ﹤0.01%
14,557
+325
+2% +$15.9K
SLRC icon
996
SLR Investment Corp
SLRC
$711M
$735K ﹤0.01%
41,362
+4,068
+11% +$74.6K
ZNGA
997
DELISTED
ZYNGA INC. CL A COMMON
ZNGA
$733K ﹤0.01%
71,818
-1,429
-2% -$14.9K
SPG icon
998
Simon Property Group
SPG
$71.7B
$732K ﹤0.01%
6,437
+3,014
+88% +$314K
NTLA icon
999
Intellia Therapeutics
NTLA
$1.66B
$731K ﹤0.01%
9,110
+1,000
+12% +$67.1K
CIGI icon
1000
Colliers International
CIGI
$5.41B
$729K ﹤0.01%
7,416
-150
-2% -$14.7K

Similar funds

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.