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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
SCHF icon
951
Schwab International Equity ETF
SCHF
$69.3B
$757K ﹤0.01%
42,022
+1,966
+5% +$33.2K
X
952
DELISTED
US Steel
X
$754K ﹤0.01%
44,960
+7,248
+19% +$90.1K
DLN icon
953
WisdomTree US LargeCap Dividend Fund
DLN
$6.45B
$753K ﹤0.01%
14,016
-1,250
-8% -$64K
GWX icon
954
State Street SPDR S&P International Small Cap ETF
GWX
$928M
$753K ﹤0.01%
21,277
+20,750
+3,937% +$676K
NIO icon
955
NIO
NIO
$11.3B
$753K ﹤0.01%
+15,447
New +$598K
SUSB icon
956
iShares ESG Aware 1-5 Year USD Corporate Bond ETF
SUSB
$1.3B
$751K ﹤0.01%
28,675
+951
+3% +$24.8K
NUE icon
957
Nucor
NUE
$61.8B
$747K ﹤0.01%
14,042
+7,086
+102% +$366K
CBRE icon
958
CBRE Group
CBRE
$44B
$744K ﹤0.01%
11,858
-2,790
-19% -$158K
NTR icon
959
Nutrien
NTR
$32.2B
$744K ﹤0.01%
15,439
-66
-0.4% -$2.92K
VICR icon
960
Vicor
VICR
$10.4B
$743K ﹤0.01%
+8,060
New +$677K
LESL icon
961
Leslie's
LESL
$7.21M
$740K ﹤0.01%
+1,334
New +$600K
ELF icon
962
e.l.f. Beauty
ELF
$5.43B
$735K ﹤0.01%
29,169
+19,060
+189% +$410K
DCOM
963
DELISTED
Dime Community Bancshares
DCOM
$735K ﹤0.01%
46,600
– –
DASH icon
964
DoorDash
DASH
$93.7B
$734K ﹤0.01%
+5,140
New +$820K
SAM icon
965
Boston Beer
SAM
$1.9B
$734K ﹤0.01%
738
+28
+4% +$26.9K
STT icon
966
State Street
STT
$52.2B
$734K ﹤0.01%
10,085
+468
+5% +$31.8K
NGG icon
967
National Grid
NGG
$81.6B
$728K ﹤0.01%
13,940
-104
-0.7% -$5.52K
ZNGA
968
DELISTED
ZYNGA INC. CL A COMMON
ZNGA
$723K ﹤0.01%
73,247
-14,120
-16% -$127K
MASI
969
DELISTED
Masimo
MASI
$722K ﹤0.01%
2,691
-55
-2% -$13.7K
MTB icon
970
M&T Bank
MTB
$36.6B
$719K ﹤0.01%
5,646
+3,102
+122% +$353K
DGRO icon
971
iShares Core Dividend Growth ETF
DGRO
$43.9B
$716K ﹤0.01%
15,973
+1,634
+11% +$69.5K
BLMN icon
972
Bloomin' Brands
BLMN
$924M
$715K ﹤0.01%
36,818
+2,819
+8% +$48.1K
IGIB icon
973
iShares 5-10 Year Investment Grade Corporate Bond ETF
IGIB
$18.6B
$714K ﹤0.01%
11,553
+76
+0.7% +$4.65K
HUBS icon
974
HubSpot
HUBS
$12B
$711K ﹤0.01%
1,793
-2
-0.1% -$702
VRNS icon
975
Varonis Systems
VRNS
$5.26B
$705K ﹤0.01%
12,927
-663
-5% -$28.8K
37 38
39
40 41

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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.