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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
GBX icon
1751
The Greenbrier Companies
GBX
$1.46B
$51K ﹤0.01%
1,105
+519
+89% +$22.5K
IGHG icon
1752
ProShares Investment Grade-Interest Rate Hedged
IGHG
$329M
$51K ﹤0.01%
692
+67
+11% +$5.02K
SMOG icon
1753
VanEck Low Carbon Energy ETF
SMOG
$134M
$51K ﹤0.01%
320
+2
+0.6% +$328
APTX
1754
DELISTED
Aptinyx Inc. Common Stock
APTX
$51K ﹤0.01%
+19,177
New +$46.1K
LOGC
1755
DELISTED
LogicBio Therapeutics, Inc. Common Stock
LOGC
$51K ﹤0.01%
+21,950
New +$74.3K
SJNK icon
1756
State Street SPDR Bloomberg Short Term High Yield Bond ETF
SJNK
$4.76B
$50K ﹤0.01%
1,826
+13
+0.7% +$353
WCLD
1757
WisdomTree Cloud Computing Fund
WCLD
$297M
$50K ﹤0.01%
963
+790
+457% +$45.8K
EWL icon
1758
iShares MSCI Switzerland ETF
EWL
$2.23B
$49K ﹤0.01%
922
+137
+17% +$6.86K
RNAC icon
1759
Cartesian Therapeutics
RNAC
$268M
$49K ﹤0.01%
+498
New +$53.6K
FM
1760
DELISTED
iShares Frontier and Select EM ETF
FM
$48K ﹤0.01%
1,386
-101
-7% -$3.53K
IFGL icon
1761
iShares International Developed Real Estate ETF
IFGL
$83.2M
$46K ﹤0.01%
1,600
– –
IHF icon
1762
iShares US Healthcare Providers ETF
IHF
$1.27B
$46K ﹤0.01%
790
– –
SEEL
1763
DELISTED
Seelos Therapeutics, Inc. Common Stock
SEEL
$46K ﹤0.01%
7
– –
REM icon
1764
iShares Mortgage Real Estate ETF
REM
$548M
$45K ﹤0.01%
1,300
– –
ATHX
1765
DELISTED
Athersys, Inc. Common Stock
ATHX
$44K ﹤0.01%
1,972
-220
-10% -$6.31K
EZM icon
1766
WisdomTree US MidCap Fund
EZM
$956M
$43K ﹤0.01%
765
– –
BRF icon
1767
VanEck Brazil Small-Cap ETF
BRF
$21.4M
$42K ﹤0.01%
2,572
– –
IQLT icon
1768
iShares MSCI Intl Quality Factor ETF
IQLT
$14.2B
$42K ﹤0.01%
1,064
– –
XTN icon
1769
State Street SPDR S&P Transportation ETF
XTN
$399M
$42K ﹤0.01%
450
– –
BMVP icon
1770
Invesco Bloomberg MVP Multi-factor ETF
BMVP
$106M
$41K ﹤0.01%
990
– –
EEMS icon
1771
iShares MSCI Emerging Markets Small-Cap ETF
EEMS
$373M
$41K ﹤0.01%
688
+170
+33% +$10.4K
EWQ icon
1772
iShares MSCI France ETF
EWQ
$345M
$40K ﹤0.01%
1,021
+58
+6% +$2.25K
USHY icon
1773
iShares Broad USD High Yield Corporate Bond ETF
USHY
$28.7B
$39K ﹤0.01%
957
-29
-3% -$1.19K
IBDP
1774
DELISTED
iShares iBonds Dec 2024 Term Corporate ETF
IBDP
$39K ﹤0.01%
1,500
– –
AKBA icon
1775
Akebia Therapeutics
AKBA
$252M
$38K ﹤0.01%
16,599
-6,306
-28% -$17.2K
69 70
71
72 73

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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.