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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
KRYS icon
1126
Krystal Biotech
KRYS
$9.66B
$622K ﹤0.01%
8,896
-84,242
-90% -$4.9M
MTTR
1127
DELISTED
Matterport, Inc. Class A Common Stock
MTTR
$621K ﹤0.01%
30,092
+9,792
+48% +$224K
GWH.WS
1128
DELISTED
ESS Tech Inc Warrant
GWH.WS
$620K ﹤0.01%
+244,994
New +$865K
KR icon
1129
Kroger
KR
$34.8B
$620K ﹤0.01%
13,699
+1,536
+13% +$64.6K
ITGR icon
1130
Integer Holdings
ITGR
$4.26B
$618K ﹤0.01%
7,222
+23
+0.3% +$2.01K
SAP icon
1131
SAP
SAP
$238B
$617K ﹤0.01%
4,404
+753
+21% +$105K
IYH icon
1132
iShares US Healthcare ETF
IYH
$3.54B
$612K ﹤0.01%
10,195
+310
+3% +$17.7K
EPI icon
1133
WisdomTree India Earnings Fund ETF
EPI
$2.06B
$611K ﹤0.01%
16,747
– –
BLND icon
1134
Blend Labs
BLND
$386M
$610K ﹤0.01%
83,049
+9,188
+12% +$107K
IGIB icon
1135
iShares 5-10 Year Investment Grade Corporate Bond ETF
IGIB
$18.6B
$609K ﹤0.01%
10,270
+2,543
+33% +$151K
AXSM icon
1136
Axsome Therapeutics
AXSM
$10.9B
$608K ﹤0.01%
16,087
-2,490
-13% -$91.6K
GTIP icon
1137
Goldman Sachs Access Inflation Protected USD Bond ETF
GTIP
$295M
$605K ﹤0.01%
10,347
+49
+0.5% +$2.86K
GIL icon
1138
Gildan
GIL
$10.6B
$601K ﹤0.01%
14,168
-7,154
-34% -$283K
SCHV
1139
Schwab US Large-Cap Value ETF
SCHV
$16.1B
$601K ﹤0.01%
24,633
+180
+0.7% +$4.26K
RNTX
1140
Rein Therapeutics
RNTX
$69.9M
$601K ﹤0.01%
53,374
+13,216
+33% +$204K
OLED icon
1141
Universal Display
OLED
$4.19B
$597K ﹤0.01%
3,615
-275
-7% -$45.3K
BKCC
1142
DELISTED
BlackRock Capital Investment Corporation
BKCC
$597K ﹤0.01%
+149,132
New +$624K
WYNN icon
1143
Wynn Resorts
WYNN
$10.6B
$595K ﹤0.01%
6,991
-4,129
-37% -$366K
INVH icon
1144
Invitation Homes
INVH
$18B
$592K ﹤0.01%
+13,061
New +$540K
XT icon
1145
iShares Future Exponential Technologies ETF
XT
$3.97B
$592K ﹤0.01%
8,963
-197
-2% -$12.8K
VRNS icon
1146
Varonis Systems
VRNS
$5B
$589K ﹤0.01%
12,066
-570
-5% -$32.5K
IYF icon
1147
iShares US Financials ETF
IYF
$4.61B
$587K ﹤0.01%
6,774
+52
+0.8% +$4.53K
CHDN icon
1148
Churchill Downs
CHDN
$6.12B
$586K ﹤0.01%
4,864
+274
+6% +$32.5K
MCY icon
1149
Mercury Insurance
MCY
$6.07B
$586K ﹤0.01%
11,045
-1,015
-8% -$54.5K
DMRC icon
1150
Digimarc Corp
DMRC
$178M
$585K ﹤0.01%
14,825
– –
44 45
46
47 48

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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.