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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
RY icon
651
Royal Bank of Canada
RY
$298B
$1.98M 0.01%
24,088
-79
-0.3% -$6.11K
EFX icon
652
Equifax
EFX
$21.4B
$1.97M 0.01%
10,196
+588
+6% +$98.9K
PGX icon
653
Invesco Preferred ETF
PGX
$3.77B
$1.96M 0.01%
128,718
-867
-0.7% -$13K
VCYT icon
654
Veracyte
VCYT
$3.45B
$1.96M 0.01%
40,078
-3,985
-9% -$185K
AMG icon
655
Affiliated Managers Group
AMG
$9.65B
$1.95M 0.01%
19,193
-747
-4% -$64.5K
MTW icon
656
Manitowoc
MTW
$740M
$1.95M 0.01%
146,400
-276
-0.2% -$2.94K
LEG icon
657
Leggett & Platt
LEG
$1.33B
$1.93M 0.01%
43,508
+3,154
+8% +$135K
GH icon
658
Guardant Health
GH
$21.6B
$1.93M 0.01%
14,940
-10,773
-42% -$1.24M
CF icon
659
CF Industries
CF
$17.6B
$1.92M 0.01%
+49,582
New +$1.64M
AWK icon
660
American Water Works
AWK
$27.1B
$1.91M 0.01%
12,465
+333
+3% +$51.3K
VHT icon
661
Vanguard Health Care ETF
VHT
$19B
$1.91M 0.01%
8,537
+696
+9% +$149K
CDK
662
DELISTED
CDK Global, Inc.
CDK
$1.91M 0.01%
36,846
-773
-2% -$36.7K
TTD icon
663
Trade Desk
TTD
$6.55B
$1.9M 0.01%
23,770
+4,180
+21% +$316K
DKNG icon
664
DraftKings
DKNG
$12.5B
$1.9M 0.01%
40,694
-264
-0.6% -$12.6K
WRK
665
DELISTED
WestRock Company
WRK
$1.88M 0.01%
43,287
+12,300
+40% +$508K
VLO icon
666
Valero Energy
VLO
$97.5B
$1.88M 0.01%
33,255
-5,357
-14% -$263K
ALL icon
667
Allstate
ALL
$65.3B
$1.88M 0.01%
17,065
-847
-5% -$83.3K
TPL icon
668
Texas Pacific Land
TPL
$23.9B
$1.86M 0.01%
23,067
+2,493
+12% +$158K
SUSA icon
669
iShares ESG Optimized MSCI USA ETF
SUSA
$4.2B
$1.86M 0.01%
22,616
+1,250
+6% +$97.7K
FCX icon
670
Freeport-McMoran
FCX
$94B
$1.85M 0.01%
71,199
+6,083
+9% +$126K
OKE icon
671
Oneok
OKE
$58.6B
$1.85M 0.01%
48,114
-5,460
-10% -$184K
LSTR icon
672
Landstar System
LSTR
$6.4B
$1.84M 0.01%
13,699
-188
-1% -$24.7K
VONG icon
673
Vanguard Russell 1000 Growth ETF
VONG
$46.2B
$1.84M 0.01%
29,776
+8,068
+37% +$472K
SUSC icon
674
iShares ESG Aware USD Corporate Bond ETF
SUSC
$1.29B
$1.84M 0.01%
65,049
+3,328
+5% +$93.1K
ACWI icon
675
iShares MSCI ACWI ETF
ACWI
$33.6B
$1.84M 0.01%
20,272
+1,460
+8% +$125K
25 26
27
28 29

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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.