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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
+10.7%
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
$28.9B
AUM Growth
+$2.35B
Cap. Flow
-$98.3M
Cap. Flow %
-0.34%
Top 10 Hldgs %
23.73%
Holding
1,960
New
105
Increased
655
Reduced
787
Closed
72

Top Buys

Rank Stock Value
1
BALL icon
Ball Corp
BALL
+$39.8M
2
ABNB icon
Airbnb
ABNB
+$37.1M
3
GNRC icon
Generac Holdings
GNRC
+$34.4M
4
U icon
Unity
U
+$29.3M
5
TREX icon
Trex
TREX
+$29M

Top Sells

Rank Stock Value
1
FISV
Fiserv Inc
FISV
+$87.4M
2
TDOC icon
Teladoc Health
TDOC
+$65.6M
3
VRSK icon
Verisk Analytics
VRSK
+$65M
4
AAPL icon
Apple
AAPL
+$52M
5
ACWV icon
iShares MSCI Global Min Vol Factor ETF
ACWV
+$46.5M

Sector Composition

Rank Sector Weight
1 Technology 25.7%
2 Healthcare 19.69%
3 Financials 11.7%
4 Consumer Discretionary 10.72%
5 Industrials 9.79%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
FICO icon
651
Fair Isaac
FICO
$24B
$2.4M 0.01%
4,780
-393
-8% -$199K
ARE icon
652
Alexandria Real Estate Equities
ARE
$8.33B
$2.4M 0.01%
13,198
+712
+6% +$127K
SNA icon
653
Snap-on
SNA
$20.9B
$2.39M 0.01%
10,714
+61
+0.6% +$14.6K
OPEN icon
654
Opendoor
OPEN
$3.54B
$2.38M 0.01%
138,586
-7,944
-5% -$137K
FXH icon
655
First Trust Health Care AlphaDEX Fund
FXH
$1.11B
$2.38M 0.01%
20,293
-166
-0.8% -$18.9K
SCZ icon
656
iShares MSCI EAFE Small-Cap ETF
SCZ
$13.6B
$2.37M 0.01%
32,013
+2,379
+8% +$179K
ET icon
657
Energy Transfer Partners
ET
$71.5B
$2.37M 0.01%
223,226
-13,142
-6% -$126K
SWK icon
658
Stanley Black & Decker
SWK
$15.4B
$2.37M 0.01%
11,538
+119
+1% +$24.7K
GKOS icon
659
Glaukos
GKOS
$11.2B
$2.36M 0.01%
27,865
-907
-3% -$74.5K
PSLV icon
660
Sprott Physical Silver Trust
PSLV
$13.3B
$2.36M 0.01%
254,141
+11,470
+5% +$110K
ACCD
661
DELISTED
Accolade Inc
ACCD
$2.35M 0.01%
43,210
-21,644
-33% -$1.05M
CHTR icon
662
Charter Communications
CHTR
$18.7B
$2.34M 0.01%
3,245
-192
-6% -$129K
NSSC icon
663
Napco Security Technologies
NSSC
$1.37B
$2.34M 0.01%
128,496
+1,750
+1% +$30K
VAW icon
664
Vanguard Materials ETF
VAW
$3.05B
$2.34M 0.01%
12,926
+2,815
+28% +$520K
SRCL
665
DELISTED
Stericycle Inc
SRCL
$2.33M 0.01%
32,534
+20,750
+176% +$1.53M
AMG icon
666
Affiliated Managers Group
AMG
$9.7B
$2.32M 0.01%
15,030
-4,125
-22% -$658K
XEL icon
667
Xcel Energy
XEL
$49.3B
$2.32M 0.01%
35,156
+497
+1% +$34.6K
SGI
668
Somnigroup International
SGI
$14B
$2.31M 0.01%
+59,083
New +$2.26M
SPYG icon
669
State Street SPDR Portfolio S&P 500 Growth ETF
SPYG
$55.5B
$2.31M 0.01%
36,699
– –
EGRX
670
DELISTED
Eagle Pharmaceuticals, Inc.
EGRX
$2.31M 0.01%
53,987
-5,150
-9% -$213K
VHT icon
671
Vanguard Health Care ETF
VHT
$19B
$2.31M 0.01%
9,332
+472
+5% +$113K
OKE icon
672
Oneok
OKE
$58.4B
$2.28M 0.01%
41,020
-7,870
-16% -$419K
STE icon
673
Steris
STE
$23B
$2.28M 0.01%
11,062
+959
+9% +$193K
GSK icon
674
GSK
GSK
$101B
$2.26M 0.01%
45,423
-80,416
-64% -$3.86M
AMRC icon
675
Ameresco
AMRC
$1.47B
$2.26M 0.01%
+36,018
New +$1.94M
25 26
27
28 29

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William Blair & Company's Q2 2021 Portfolio in Review

As of Q2 2021, William Blair & Company held 1,960 positions worth $28.9B, up 8.9% from $26.5B the previous quarter. Its ten largest holdings account for 24% of the portfolio.

William Blair & Company's Q2 2021 filing shows 105 new, 655 increased, 787 reduced and 72 closed positions. Its largest new stake was Luminar Technologies: 36,860 shares worth $12.1M. The largest sale was Fiserv Inc, an estimated $87.4M.

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

  • William Blair & Company's largest Q2 2021 buy was Luminar Technologies: 36,860 shares worth $12.1M.
  • William Blair & Company added most to Ball Corp in Q2 2021, an estimated $39.8M increase.
  • William Blair & Company's biggest Q2 2021 reduction was Fiserv Inc, cutting an estimated $87.4M.
  • William Blair & Company fully exited RealPage, Inc. in Q2 2021, selling an estimated $12.1M.
  • William Blair & Company's ten largest holdings make up 24% of its $28.9B portfolio in Q2 2021.
  • William Blair & Company opened 105 new positions and closed 72 in Q2 2021.
  • William Blair & Company's portfolio value rose 8.9% quarter-over-quarter to $28.9B.

Based on William Blair & Company's 13F filing for Q2 2021, filed 12 Aug 2021.