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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

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
DDOG icon
1001
Datadog
DDOG
$90.6B
$763K ﹤0.01%
7,333
+980
+15% +$88.5K
DAL icon
1002
Delta Air Lines
DAL
$59.1B
$760K ﹤0.01%
17,561
-1,270
-7% -$58.8K
ZS icon
1003
Zscaler
ZS
$30.4B
$759K ﹤0.01%
3,513
+684
+24% +$130K
HUBS icon
1004
HubSpot
HUBS
$12B
$755K ﹤0.01%
1,296
-273
-17% -$142K
HASI icon
1005
Hannon Armstrong Sustainable Infrastructure Capital
HASI
$5.44B
$747K ﹤0.01%
13,300
+2
+0% +$104
WH icon
1006
Wyndham Hotels & Resorts
WH
$5.49B
$747K ﹤0.01%
10,337
+3,995
+63% +$295K
FNV icon
1007
Franco-Nevada
FNV
$45.5B
$745K ﹤0.01%
5,135
-6
-0.1% -$868
MCY icon
1008
Mercury Insurance
MCY
$5.84B
$743K ﹤0.01%
11,437
QTRX icon
1009
Quanterix
QTRX
$139M
$743K ﹤0.01%
12,660
+1,350
+12% +$78.4K
STT icon
1010
State Street
STT
$52.2B
$743K ﹤0.01%
9,029
-425
-4% -$35.9K
BBJP icon
1011
JPMorgan BetaBuilders Japan ETF
BBJP
$19.2B
$741K ﹤0.01%
+13,122
New +$748K
SUNS
1012
DELISTED
SLR Senior Investment Corp. Common Stock
SUNS
$739K ﹤0.01%
48,631
-13,733
-22% -$213K
EDIT icon
1013
Editas Medicine
EDIT
$432M
$737K ﹤0.01%
13,005
-45
-0.3% -$1.66K
SLF icon
1014
Sun Life Financial
SLF
$44.4B
$736K ﹤0.01%
14,288
-269
-2% -$14.2K
COR icon
1015
Cencora
COR
$60B
$732K ﹤0.01%
6,392
-3,100
-33% -$366K
TLMD
1016
DELISTED
SOC Telemed, Inc. Class A Common Stock
TLMD
$731K ﹤0.01%
128,400
+61,500
+92% +$409K
NUVA
1017
DELISTED
NuVasive, Inc.
NUVA
$730K ﹤0.01%
10,764
CBRE icon
1018
CBRE Group
CBRE
$42.7B
$728K ﹤0.01%
8,488
-4,243
-33% -$362K
BECN
1019
DELISTED
Beacon Roofing Supply, Inc.
BECN
$728K ﹤0.01%
13,672
-12,700
-48% -$709K
SAM icon
1020
Boston Beer
SAM
$1.89B
$725K ﹤0.01%
710
-2
-0.3% -$2.25K
FLOT icon
1021
iShares Floating Rate Bond ETF
FLOT
$10.5B
$723K ﹤0.01%
14,223
+2,200
+18% +$112K
WLKP icon
1022
Westlake Chemical Partners
WLKP
$778M
$723K ﹤0.01%
26,850
-2,400
-8% -$63.8K
PPLI
1023
People Inc
PPLI
$3.02B
$721K ﹤0.01%
5,700
-3,787
-40% -$491K
PIE icon
1024
Invesco Dorsey Wright Emerging Markets Momentum ETF
PIE
$250M
$720K ﹤0.01%
26,320
+320
+1% +$8.11K
PNQI icon
1025
Invesco NASDAQ Internet ETF
PNQI
$544M
$719K ﹤0.01%
14,000

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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.