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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
OSBC icon
1626
Old Second Bancorp
OSBC
$1.29B
$139K ﹤0.01%
11,064
+3
+0% +$39
FBP icon
1627
First Bancorp
FBP
$4.38B
$138K ﹤0.01%
10,000
-5,000
-33% -$68.8K
CGBD icon
1628
Carlyle Secured Lending
CGBD
$758M
$137K ﹤0.01%
10,000
– –
REZ icon
1629
iShares Residential and Multisector Real Estate ETF
REZ
$879M
$137K ﹤0.01%
1,392
– –
TEVA icon
1630
Teva Pharmaceuticals
TEVA
$41.2B
$137K ﹤0.01%
17,082
-1,268
-7% -$11.4K
AFK icon
1631
VanEck Africa Index ETF
AFK
$105M
$136K ﹤0.01%
6,775
– –
CLBT icon
1632
Cellebrite
CLBT
$3.99B
$135K ﹤0.01%
+16,788
New +$158K
HTZWW
1633
Hertz Global Holdings Warrants
HTZWW
$95.5M
$135K ﹤0.01%
+8,479
New +$133K
DGS icon
1634
WisdomTree Emerging Markets SmallCap Dividend Fund
DGS
$1.77B
$129K ﹤0.01%
2,434
-120
-5% -$6.32K
ORGN
1635
DELISTED
Origin Materials
ORGN
$129K ﹤0.01%
+667
New +$132K
SPHD icon
1636
Invesco S&P 500 High Dividend Low Volatility ETF
SPHD
$3.38B
$129K ﹤0.01%
2,839
+5
+0.2% +$218
SPSM icon
1637
State Street SPDR Portfolio S&P 600 Small Cap ETF
SPSM
$17.4B
$128K ﹤0.01%
2,855
+26
+0.9% +$1.16K
VUZI icon
1638
Vuzix
VUZI
$224M
$128K ﹤0.01%
+14,817
New +$160K
COLIW
1639
DELISTED
Colicity Inc. Warrant
COLIW
$128K ﹤0.01%
165,150
+164,850
+54,950% +$152K
FREL icon
1640
Fidelity MSCI Real Estate Index ETF
FREL
$1.49B
$127K ﹤0.01%
3,671
+1,849
+101% +$60.3K
CGW icon
1641
Invesco S&P Global Water Index ETF
CGW
$1.08B
$125K ﹤0.01%
2,056
+12
+0.6% +$707
IDU icon
1642
iShares US Utilities ETF
IDU
$1.4B
$125K ﹤0.01%
1,411
+51
+4% +$4.27K
LNAI
1643
Lunai Bioworks
LNAI
$10.9M
$124K ﹤0.01%
213
– –
RPG icon
1644
Invesco S&P 500 Pure Growth ETF
RPG
$2.09B
$124K ﹤0.01%
2,935
– –
BYSI icon
1645
BeyondSpring
BYSI
$35.8M
$121K ﹤0.01%
26,675
-196,030
-88% -$2.21M
HIVE
1646
HIVE Digital Technologies
HIVE
$777M
$120K ﹤0.01%
9,110
– –
VMD icon
1647
Viemed Healthcare
VMD
$371M
$120K ﹤0.01%
23,000
– –
PVG
1648
DELISTED
PRETIUM RESOURCES INC.
PVG
$120K ﹤0.01%
8,525
-17,300
-67% -$220K
GSJY icon
1649
Goldman Sachs ActiveBeta Japan Equity ETF
GSJY
$88.2M
$119K ﹤0.01%
3,240
– –
VOOG icon
1650
Vanguard S&P 500 Growth ETF
VOOG
$27.2B
$119K ﹤0.01%
2,370
-750
-24% -$36.3K
64 65
66
67 68

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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.