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William Blair & Company

William Blair & Company Portfolio holdings

AUM $38.4B
1-Year Est. Return 25.71%
This Fund
S&P 500
This Quarter Est. Return
+13.98%
1 Year Est. Return
+25.71%
3 Year Est. Return
+88.7%
5 Year Est. Return
+104.53%
10 Year Est. Return
+665.86%
AUM
$27.3B
AUM Growth
+$3.7B
Cap. Flow
+$865M
Cap. Flow %
3.17%
Top 10 Hldgs %
25.38%
Holding
1,900
New
178
Increased
749
Reduced
623
Closed
72

Top Buys

Rank Stock Value
1
SPLK
Splunk Inc
SPLK
+$77.8M
2
GD icon
General Dynamics
GD
+$49.6M
3
ROK icon
Rockwell Automation
ROK
+$43.3M
4
LMBS icon
First Trust Exchange-Traded Fund IV First Trust Low Duration Opportunities ETF
LMBS
+$32.3M
5
JPM icon
JPMorgan Chase
JPM
+$30.6M

Top Sells

Rank Stock Value
1
WORK
Slack Technologies, Inc.
WORK
+$24.2M
2
NTRS icon
Northern Trust
NTRS
+$24.1M
3
BKNG icon
Booking.com
BKNG
+$22.5M
4
EXEL icon
Exelixis
EXEL
+$17.5M
5
DOCU
DocuSign
DOCU
+$15M

Sector Composition

Rank Sector Weight
1 Technology 27.82%
2 Healthcare 18.6%
3 Financials 11.15%
4 Consumer Discretionary 10.38%
5 Industrials 8.96%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
RBC icon
1126
RBC Bearings
RBC
$17.5B
$431K ﹤0.01%
2,405
-296
-11% -$45.2K
NFE icon
1127
New Fortress Energy
NFE
$94M
$430K ﹤0.01%
+8,032
New +$368K
BNDX icon
1128
Vanguard Total International Bond ETF
BNDX
$83B
$429K ﹤0.01%
7,321
+48
+0.7% +$2.8K
FXI icon
1129
iShares China Large-Cap ETF
FXI
$4.15B
$428K ﹤0.01%
9,223
-485
-5% -$22.1K
NRC icon
1130
NRC Health Common Stock
NRC
$474M
$428K ﹤0.01%
10,000
-3,182
-24% -$163K
XEC
1131
DELISTED
CIMAREX ENERGY CO
XEC
$428K ﹤0.01%
11,420
-3,159
-22% -$101K
LECO icon
1132
Lincoln Electric
LECO
$15.5B
$427K ﹤0.01%
3,670
-117
-3% -$12.8K
VRTU
1133
DELISTED
Virtusa Corporation
VRTU
$427K ﹤0.01%
8,343
-375
-4% -$18.8K
UYG icon
1134
ProShares Ultra Financials
UYG
$862M
$425K ﹤0.01%
10,038
+3
+0% +$109
CURO
1135
DELISTED
CURO Group Holdings Corp.
CURO
$423K ﹤0.01%
29,540
– –
DEM icon
1136
WisdomTree Emerging Markets High Dividend Fund
DEM
$3.98B
$419K ﹤0.01%
10,187
+850
+9% +$32.6K
GIL icon
1137
Gildan
GIL
$10.6B
$419K ﹤0.01%
14,955
-725
-5% -$17.8K
SONO icon
1138
Sonos
SONO
$1.92B
$415K ﹤0.01%
17,750
+1,000
+6% +$18.6K
VIOO icon
1139
Vanguard S&P Small-Cap 600 ETF
VIOO
$4.35B
$415K ﹤0.01%
4,942
+16
+0.3% +$1.21K
AIVL icon
1140
WisdomTree US AI Enhanced Value Fund
AIVL
$436M
$414K ﹤0.01%
4,939
– –
BMRC icon
1141
Bank of Marin Bancorp
BMRC
$462M
$414K ﹤0.01%
12,054
– –
EAGG icon
1142
iShares ESG Aware US Aggregate Bond ETF
EAGG
$4.99B
$411K ﹤0.01%
7,274
+753
+12% +$42.4K
SYRE icon
1143
Spyre Therapeutics
SYRE
$8.96B
$411K ﹤0.01%
2,088
– –
CGBD icon
1144
Carlyle Secured Lending
CGBD
$786M
$410K ﹤0.01%
+40,000
New +$396K
SR icon
1145
Spire
SR
$4.89B
$409K ﹤0.01%
6,385
-700
-10% -$42.7K
IX icon
1146
ORIX
IX
$43.9B
$406K ﹤0.01%
26,220
-50
-0.2% -$705
LBTYK icon
1147
Liberty Global Class C
LBTYK
$3.48B
$404K ﹤0.01%
17,069
– –
PSA icon
1148
Public Storage
PSA
$61.3B
$404K ﹤0.01%
1,749
+97
+6% +$22.2K
UUP icon
1149
Invesco DB US Dollar Index Bullish Fund
UUP
$414M
$403K ﹤0.01%
16,625
– –
SMDV icon
1150
ProShares Russell 2000 Dividend Growers ETF
SMDV
$708M
$402K ﹤0.01%
7,009
– –
44 45
46
47 48

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William Blair & Company's Q4 2020 Portfolio in Review

As of Q4 2020, William Blair & Company held 1,900 positions worth $27.3B, up 16% from $23.6B the previous quarter. Its ten largest holdings account for 25% of the portfolio.

William Blair & Company deployed $865M of net new capital in Q4 2020, opening 178 new positions and adding to 749 existing holdings. Its largest new stake was Seagen Inc. Common Stock: 91,539 shares worth $16M.

By sector, the portfolio is most concentrated in Technology at 28% of assets, up from 27% a quarter earlier, followed by Healthcare and Financials.

On the sell side, the largest reduction was Slack Technologies, Inc., an estimated $24.2M trimmed.

  • William Blair & Company's largest Q4 2020 buy was Seagen Inc. Common Stock: 91,539 shares worth $16M.
  • William Blair & Company added most to Splunk Inc in Q4 2020, an estimated $77.8M increase.
  • William Blair & Company's biggest Q4 2020 reduction was Slack Technologies, Inc., cutting an estimated $24.2M.
  • William Blair & Company fully exited Dunkin' Brands Group, Inc. in Q4 2020, selling an estimated $12.1M.
  • William Blair & Company's ten largest holdings make up 25% of its $27.3B portfolio in Q4 2020.
  • William Blair & Company opened 178 new positions and closed 72 in Q4 2020.
  • William Blair & Company's portfolio value rose 16% quarter-over-quarter to $27.3B.

Based on William Blair & Company's 13F filing for Q4 2020, filed 9 Feb 2021.