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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
GNR icon
1476
State Street SPDR S&P Global Natural Resources ETF
GNR
$4.95B
$205K ﹤0.01%
3,997
-1,150
-22% -$59.8K
HRL icon
1477
Hormel Foods
HRL
$13.4B
$205K ﹤0.01%
5,006
-543
-10% -$24.5K
SKM icon
1478
SK Telecom
SKM
$13.5B
$205K ﹤0.01%
4,128
– –
RLI icon
1479
RLI Corp
RLI
$5.78B
$204K ﹤0.01%
4,074
-3,848
-49% -$205K
DECK icon
1480
Deckers Outdoor
DECK
$12.4B
$203K ﹤0.01%
3,378
-1,944
-37% -$133K
HL icon
1481
Hecla Mining
HL
$12.2B
$203K ﹤0.01%
36,959
– –
RXT icon
1482
Rackspace Technology
RXT
$1.18B
$203K ﹤0.01%
+14,250
New +$229K
SCWX
1483
DELISTED
SecureWorks Corp Class A Common Stock
SCWX
$203K ﹤0.01%
10,190
– –
ATCO
1484
DELISTED
Atlas Corp.
ATCO
$203K ﹤0.01%
+13,376
New +$191K
IBMJ
1485
DELISTED
iShares iBonds Dec 2021 Term Muni Bond ETF
IBMJ
$203K ﹤0.01%
7,950
+5,950
+298% +$152K
KFRC icon
1486
Kforce
KFRC
$1.03B
$202K ﹤0.01%
3,388
+3
+0.1% +$181
MDYV icon
1487
State Street SPDR S&P 400 Mid Cap Value ETF
MDYV
$2.88B
$201K ﹤0.01%
3,028
– –
NSIT icon
1488
Insight Enterprises
NSIT
$4.54B
$201K ﹤0.01%
2,230
-15
-0.7% -$1.45K
TRUP icon
1489
Trupanion
TRUP
$1.33B
$200K ﹤0.01%
2,575
– –
EMLP icon
1490
First Trust North American Energy Infrastructure Fund
EMLP
$4.15B
$199K ﹤0.01%
8,388
+131
+2% +$3.19K
VRIG icon
1491
Invesco Variable Rate Investment Grade ETF
VRIG
$1.85B
$199K ﹤0.01%
7,935
– –
AGZ icon
1492
iShares Agency Bond ETF
AGZ
$564M
$198K ﹤0.01%
1,670
-7
-0.4% -$833
HRTX icon
1493
Heron Therapeutics
HRTX
$64.7M
$198K ﹤0.01%
18,500
– –
FBP icon
1494
First Bancorp
FBP
$4.46B
$197K ﹤0.01%
15,000
– –
NTCO
1495
DELISTED
Natura &Co Holding S.A. American Depositary Shares (each representing two Common Shares)
NTCO
$196K ﹤0.01%
+11,779
New +$241K
CCC
1496
CCC Intelligent Solutions
CCC
$4.11B
$195K ﹤0.01%
+18,534
New +$192K
HEDJ icon
1497
WisdomTree Europe Hedged Equity Fund
HEDJ
$1.87B
$195K ﹤0.01%
5,132
– –
IEUS icon
1498
iShares MSCI Europe Small-Cap ETF
IEUS
$184M
$194K ﹤0.01%
2,810
– –
STLA icon
1499
Stellantis
STLA
$20.2B
$192K ﹤0.01%
+10,040
New +$199K
PCY icon
1500
Invesco Emerging Markets Sovereign Debt ETF
PCY
$1.39B
$184K ﹤0.01%
6,898
-376
-5% -$10.3K
58 59
60
61 62

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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.