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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
+1.99%
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
$29.4B
AUM Growth
+$519M
Cap. Flow
+$281M
Cap. Flow %
0.96%
Top 10 Hldgs %
23.58%
Holding
1,987
New
99
Increased
752
Reduced
666
Closed
108

Top Buys

Rank Stock Value
1
ABNB icon
Airbnb
ABNB
+$45.2M
2
CHWY icon
Chewy
CHWY
+$31.5M
3
U icon
Unity
U
+$23.3M
4
RYAN icon
Ryan Specialty Holdings
RYAN
+$22.4M
5
AMZN icon
Amazon
AMZN
+$21.5M

Top Sells

Rank Stock Value
1
IDXX icon
Idexx Laboratories
IDXX
+$37.7M
2
GD icon
General Dynamics
GD
+$33.5M
3
ECL icon
Ecolab
ECL
+$31.7M
4
JNJ icon
Johnson & Johnson
JNJ
+$20.9M
5
UBER icon
Uber
UBER
+$19.2M

Sector Composition

Rank Sector Weight
1 Technology 26.19%
2 Healthcare 19.81%
3 Financials 11.61%
4 Consumer Discretionary 10.68%
5 Industrials 9.37%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
LBTYA icon
1551
Liberty Global Class A
LBTYA
$3.55B
$138K ﹤0.01%
4,629
-92
-2% -$2.55K
DGS icon
1552
WisdomTree Emerging Markets SmallCap Dividend Fund
DGS
$1.78B
$137K ﹤0.01%
2,554
+110
+5% +$5.97K
BSBR icon
1553
Santander
BSBR
$43.1B
$136K ﹤0.01%
+21,750
New +$157K
FNDA icon
1554
Schwab Fundamental US Small Company Index ETF
FNDA
$9.38B
$136K ﹤0.01%
5,180
-406
-7% -$10.8K
CGBD icon
1555
Carlyle Secured Lending
CGBD
$764M
$134K ﹤0.01%
10,000
-5,000
-33% -$68.3K
OPPE
1556
WisdomTree European Opportunities Fund
OPPE
$295M
$133K ﹤0.01%
3,750
– –
DISCK
1557
DELISTED
Discovery, Inc. Series C Common Stock
DISCK
$132K ﹤0.01%
5,432
-500
-8% -$13.4K
HZN
1558
DELISTED
Horizon Global Corporation
HZN
$130K ﹤0.01%
18,500
– –
CRD.B icon
1559
Crawford & Co Class B
CRD.B
$576M
$129K ﹤0.01%
14,434
– –
BW icon
1560
Babcock & Wilcox
BW
$1.46B
$128K ﹤0.01%
20,001
– –
VMD icon
1561
Viemed Healthcare
VMD
$353M
$128K ﹤0.01%
23,000
– –
EWY icon
1562
iShares MSCI South Korea ETF
EWY
$27.2B
$127K ﹤0.01%
1,571
+311
+25% +$27.1K
GSJY icon
1563
Goldman Sachs ActiveBeta Japan Equity ETF
GSJY
$88.7M
$125K ﹤0.01%
3,240
– –
SPIP icon
1564
State Street SPDR Portfolio TIPS ETF
SPIP
$1.01B
$125K ﹤0.01%
4,008
-1
-0% -$31
AIVL icon
1565
WisdomTree US AI Enhanced Value Fund
AIVL
$436M
$124K ﹤0.01%
1,320
– –
XLRE icon
1566
State Street Real Estate Select Sector SPDR ETF
XLRE
$8.56B
$123K ﹤0.01%
2,762
-61
-2% -$2.83K
HIVE
1567
HIVE Digital Technologies
HIVE
$750M
$122K ﹤0.01%
+9,110
New +$128K
SPSM icon
1568
State Street SPDR Portfolio S&P 600 Small Cap ETF
SPSM
$17.5B
$121K ﹤0.01%
2,829
– –
SPHD icon
1569
Invesco S&P 500 High Dividend Low Volatility ETF
SPHD
$3.39B
$120K ﹤0.01%
2,834
+5
+0.2% +$219
REZ icon
1570
iShares Residential and Multisector Real Estate ETF
REZ
$848M
$119K ﹤0.01%
+1,392
New +$123K
IFLN
1571
Invesco Bloomberg Enhanced Fallen Angels ETF
IFLN
$306M
$115K ﹤0.01%
5,907
– –
CGW icon
1572
Invesco S&P Global Water Index ETF
CGW
$1.07B
$114K ﹤0.01%
2,044
+250
+14% +$14.4K
LNAI
1573
Lunai Bioworks
LNAI
$10.7M
$114K ﹤0.01%
+213
New +$104K
RPG icon
1574
Invesco S&P 500 Pure Growth ETF
RPG
$2.07B
$113K ﹤0.01%
2,935
– –
PMD
1575
DELISTED
Psychemedics Corporation
PMD
$113K ﹤0.01%
13,500
-500
-4% -$3.66K
61 62
63
64 65

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William Blair & Company's Q3 2021 Portfolio in Review

As of Q3 2021, William Blair & Company held 1,987 positions worth $29.4B, up 1.8% from $28.9B the previous quarter. Its ten largest holdings account for 24% of the portfolio.

William Blair & Company's Q3 2021 filing shows 99 new, 752 increased, 666 reduced and 108 closed positions. Its largest new stake was Ryan Specialty Holdings: 709,555 shares worth $24M. The largest sale was Idexx Laboratories, an estimated $37.7M.

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 Q3 2021 buy was Ryan Specialty Holdings: 709,555 shares worth $24M.
  • William Blair & Company added most to Airbnb in Q3 2021, an estimated $45.2M increase.
  • William Blair & Company's biggest Q3 2021 reduction was Idexx Laboratories, cutting an estimated $37.7M.
  • William Blair & Company fully exited Slack Technologies, Inc. in Q3 2021, selling an estimated $13.8M.
  • William Blair & Company's ten largest holdings make up 24% of its $29.4B portfolio in Q3 2021.
  • William Blair & Company opened 99 new positions and closed 108 in Q3 2021.
  • William Blair & Company's portfolio value rose 1.8% quarter-over-quarter to $29.4B.

Based on William Blair & Company's 13F filing for Q3 2021, filed 12 Nov 2021.