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William Blair & Company

William Blair & Company Portfolio holdings

AUM $34.9B
1-Year Est. Return 18.88%
This Fund
S&P 500
This Quarter Est. Return
+8.27%
1 Year Est. Return
+18.88%
3 Year Est. Return
+73.84%
5 Year Est. Return
+90.13%
10 Year Est. Return
+563.35%
AUM
$31.9B
AUM Growth
+$2.51B
Cap. Flow
+$830M
Cap. Flow %
2.6%
Top 10 Hldgs %
23.75%
Holding
2,051
New
174
Increased
889
Reduced
606
Closed
88

Top Buys

Rank Stock Value
1
AMZN icon
Amazon
AMZN
+$66.8M
2
PODD icon
Insulet
PODD
+$47M
3
XMTR icon
Xometry
XMTR
+$44.1M
4
SPY icon
State Street SPDR S&P 500 ETF Trust
SPY
+$43.7M
5
AON icon
Aon
AON
+$36.1M

Top Sells

Rank Stock Value
1
PYPL icon
PayPal
PYPL
+$73.8M
2
ATVI
Activision Blizzard
ATVI
+$46.9M
3
OSH
Oak Street Health, Inc.
OSH
+$43.6M
4
DIS icon
Walt Disney
DIS
+$34M
5
PGR icon
Progressive
PGR
+$32.6M

Sector Composition

Rank Sector Weight
1 Technology 26.2%
2 Healthcare 19.21%
3 Financials 10.7%
4 Consumer Discretionary 10.6%
5 Industrials 10.38%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
EQC
1576
DELISTED
Equity Commonwealth
EQC
$190K ﹤0.01%
+7,350
New +$191K
ATCO
1577
DELISTED
Atlas Corp.
ATCO
$190K ﹤0.01%
13,376
– –
ETON icon
1578
Eton Pharmaceutcials
ETON
$1.22B
$189K ﹤0.01%
44,000
– –
SSO icon
1579
ProShares Ultra S&P500
SSO
$8.36B
$189K ﹤0.01%
5,176
+4,196
+428% +$144K
VIRX
1580
DELISTED
Viracta Therapeutics, Inc. Common Stock
VIRX
$189K ﹤0.01%
51,843
– –
ACRS icon
1581
Aclaris Therapeutics
ACRS
$869M
$186K ﹤0.01%
12,800
+2,750
+27% +$41.7K
MKC.V icon
1582
McCormick & Company Voting
MKC.V
$14.2B
$183K ﹤0.01%
+1,920
New +$163K
HDSN
1583
Hudson Technologies
HDSN
$235M
$182K ﹤0.01%
40,900
+1,000
+3% +$3.88K
BWX icon
1584
State Street SPDR Bloomberg International Treasury Bond ETF
BWX
$1.32B
$181K ﹤0.01%
6,392
+237
+4% +$6.74K
KIE icon
1585
State Street SPDR S&P Insurance ETF
KIE
$639M
$181K ﹤0.01%
4,475
– –
GRID
1586
First Trust NASDAQ Clean Edge Smart Grid Infrastructure Index Fund
GRID
$12.1B
$180K ﹤0.01%
1,751
+113
+7% +$11.4K
SCHH icon
1587
Schwab US REIT ETF
SCHH
$11.4B
$178K ﹤0.01%
6,748
+6,616
+5,012% +$163K
AGZ icon
1588
iShares Agency Bond ETF
AGZ
$565M
$177K ﹤0.01%
1,509
-161
-10% -$19K
DEM icon
1589
WisdomTree Emerging Markets High Dividend Fund
DEM
$3.98B
$176K ﹤0.01%
4,053
-1,254
-24% -$54.6K
KDNY
1590
DELISTED
Chinook Therapeutics, Inc. Common Stock
KDNY
$175K ﹤0.01%
10,728
-10,922
-50% -$155K
ETHO icon
1591
Amplify Etho Climate Leadership US ETF
ETHO
$195M
$173K ﹤0.01%
2,680
– –
FPX icon
1592
First Trust US Equity Opportunities ETF
FPX
$1.51B
$173K ﹤0.01%
1,410
– –
DNA icon
1593
Ginkgo Bioworks
DNA
$521M
$170K ﹤0.01%
+510
New +$242K
EEMV icon
1594
iShares MSCI Emerging Markets Min Vol Factor ETF
EEMV
$3.56B
$169K ﹤0.01%
2,698
+128
+5% +$8.07K
EUFN icon
1595
iShares MSCI Europe Financials ETF
EUFN
$4.29B
$169K ﹤0.01%
8,430
-436
-5% -$8.84K
HRTX icon
1596
Heron Therapeutics
HRTX
$92.9M
$169K ﹤0.01%
18,500
– –
OIH icon
1597
VanEck Oil Services ETF
OIH
$1.92B
$169K ﹤0.01%
914
– –
AG icon
1598
First Majestic Silver
AG
$9.07B
$167K ﹤0.01%
15,027
-741
-5% -$8.94K
INDA icon
1599
iShares MSCI India ETF
INDA
$6.63B
$167K ﹤0.01%
3,650
– –
PWB icon
1600
Invesco Large Cap Growth ETF
PWB
$2.39B
$167K ﹤0.01%
2,063
-94
-4% -$7.4K
62 63
64
65 66

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William Blair & Company's Q4 2021 Portfolio in Review

As of Q4 2021, William Blair & Company held 2,051 positions worth $31.9B, up 8.5% from $29.4B the previous quarter. Its ten largest holdings account for 24% of the portfolio.

William Blair & Company's Q4 2021 filing shows 174 new, 889 increased, 606 reduced and 88 closed positions. Its largest new stake was Portillo's: 759,814 shares worth $28.5M. The largest sale was PayPal, an estimated $73.8M.

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 Q4 2021 buy was Portillo's: 759,814 shares worth $28.5M.
  • William Blair & Company added most to Amazon in Q4 2021, an estimated $66.8M increase.
  • William Blair & Company's biggest Q4 2021 reduction was PayPal, cutting an estimated $73.8M.
  • William Blair & Company fully exited Asana in Q4 2021, selling an estimated $6.06M.
  • William Blair & Company's ten largest holdings make up 24% of its $31.9B portfolio in Q4 2021.
  • William Blair & Company opened 174 new positions and closed 88 in Q4 2021.
  • William Blair & Company's portfolio value rose 8.5% quarter-over-quarter to $31.9B.

Based on William Blair & Company's 13F filing for Q4 2021, filed 14 Feb 2022.