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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
EEFT icon
951
Euronet Worldwide
EEFT
$2.7B
$1.01M ﹤0.01%
8,491
+1,036
+14% +$123K
BF.B icon
952
Brown-Forman Class B
BF.B
$13.1B
$1.01M ﹤0.01%
13,846
+273
+2% +$19.4K
PAR icon
953
PAR Technology
PAR
$735M
$1.01M ﹤0.01%
19,090
-46
-0.2% -$2.77K
EFOR
954
Everforth Inc
EFOR
$1.32B
$1M ﹤0.01%
8,114
-135
-2% -$16.5K
KRE icon
955
State Street SPDR S&P Regional Banking ETF
KRE
$4.57B
$1M ﹤0.01%
14,124
-753
-5% -$53.9K
VICR icon
956
Vicor
VICR
$10.2B
$1M ﹤0.01%
7,880
-180
-2% -$25.5K
PLTR icon
957
Palantir
PLTR
$413B
$995K ﹤0.01%
54,644
+1,999
+4% +$44.1K
DCOM icon
958
Dime Commercial Bancshares
DCOM
$1.78B
$992K ﹤0.01%
28,224
– –
RCL icon
959
Royal Caribbean
RCL
$85.6B
$991K ﹤0.01%
12,892
-1,408
-10% -$114K
RWT
960
Redwood Trust
RWT
$594M
$991K ﹤0.01%
75,098
-21,950
-23% -$297K
USD icon
961
ProShares Ultra Semiconductors
USD
$2.94B
$988K ﹤0.01%
74,800
– –
NUAN
962
DELISTED
Nuance Communications, Inc.
NUAN
$988K ﹤0.01%
17,854
-108,148
-86% -$5.96M
LYB icon
963
LyondellBasell Industries
LYB
$19.2B
$987K ﹤0.01%
10,705
+412
+4% +$38.2K
WK icon
964
Workiva
WK
$3.54B
$983K ﹤0.01%
7,534
+2,229
+42% +$314K
ATRS
965
DELISTED
Antares Pharma, Inc.
ATRS
$982K ﹤0.01%
+275,000
New +$962K
IJS icon
966
iShares S&P Small-Cap 600 Value ETF
IJS
$8.37B
$978K ﹤0.01%
9,356
+2,870
+44% +$301K
SLRC icon
967
SLR Investment Corp
SLRC
$715M
$978K ﹤0.01%
53,077
-3,433
-6% -$65.8K
JETS icon
968
US Global Jets ETF
JETS
$849M
$972K ﹤0.01%
+46,070
New +$1.03M
HDB icon
969
HDFC Bank
HDB
$121B
$971K ﹤0.01%
29,832
+1,090
+4% +$38.2K
AAP icon
970
Advance Auto Parts
AAP
$3.49B
$969K ﹤0.01%
4,038
-1,085
-21% -$248K
TFI icon
971
State Street SPDR Nuveen ICE Municipal Bond ETF
TFI
$3.17B
$966K ﹤0.01%
18,664
-309
-2% -$15.9K
COR icon
972
Cencora
COR
$61.2B
$960K ﹤0.01%
7,225
+824
+13% +$101K
DRI icon
973
Darden Restaurants
DRI
$24.4B
$959K ﹤0.01%
6,369
-276
-4% -$40.8K
RBLX icon
974
Roblox
RBLX
$27B
$954K ﹤0.01%
9,249
+2,537
+38% +$246K
CRON
975
Cronos Group
CRON
$1.14B
$951K ﹤0.01%
242,567
– –
37 38
39
40 41

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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.