We are live on ! Find out more
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
QCOM icon
126
Qualcomm
QCOM
$171B
$47.3M 0.17%
310,695
+17,335
+6% +$2.41M
BLK icon
127
Blackrock
BLK
$180B
$46.8M 0.17%
64,815
+2,087
+3% +$1.38M
ACWV icon
128
iShares MSCI Global Min Vol Factor ETF
ACWV
$3.37B
$46.3M 0.17%
478,177
-12,251
-2% -$1.16M
IBM icon
129
IBM
IBM
$222B
$45.8M 0.17%
380,365
+24,131
+7% +$2.79M
IWV icon
130
iShares Russell 3000 ETF
IWV
$20.4B
$45.4M 0.17%
202,970
-339
-0.2% -$71.2K
RPAY icon
131
Repay Holdings
RPAY
$311M
$44.6M 0.16%
1,635,310
-26,184
-2% -$639K
MMM icon
132
3M
MMM
$94.8B
$44M 0.16%
300,948
+22,474
+8% +$3.19M
PFE icon
133
Pfizer
PFE
$150B
$43.5M 0.16%
1,181,546
+17,020
+1% +$624K
IWM icon
134
iShares Russell 2000 ETF
IWM
$82.2B
$43.1M 0.16%
220,074
+12,569
+6% +$2.2M
ZM icon
135
Zoom
ZM
$30.8B
$43.1M 0.16%
127,811
+4,910
+4% +$2.19M
HOLX
136
DELISTED
Hologic
HOLX
$43M 0.16%
590,317
-7,852
-1% -$554K
UBER icon
137
Uber
UBER
$154B
$42.5M 0.16%
834,312
+229,501
+38% +$10.3M
ORLY icon
138
O'Reilly Automotive
ORLY
$74.5B
$41.9M 0.15%
1,389,375
-10,455
-0.7% -$316K
BL icon
139
BlackLine
BL
$1.65B
$41.3M 0.15%
309,426
+1,584
+0.5% +$177K
GILD icon
140
Gilead Sciences
GILD
$168B
$41.2M 0.15%
707,841
-112,322
-14% -$6.78M
HON icon
141
Honeywell
HON
$74.6B
$41.1M 0.15%
204,862
+13,594
+7% +$2.47M
CVNA icon
142
Carvana
CVNA
$79.7B
$40M 0.15%
834,330
-2,345
-0.3% -$107K
SPT icon
143
Sprout Social
SPT
$579M
$39.8M 0.15%
876,982
+25,050
+3% +$1.19M
VCSH icon
144
Vanguard Short-Term Corporate Bond ETF
VCSH
$45B
$39.5M 0.14%
473,936
+22,564
+5% +$1.87M
GLD icon
145
SPDR Gold Trust
GLD
$144B
$39.2M 0.14%
219,683
+14,826
+7% +$2.61M
ANET icon
146
Arista Networks
ANET
$265B
$38.9M 0.14%
2,143,184
+252,272
+13% +$4M
RBA icon
147
RB Global
RBA
$16B
$38.3M 0.14%
550,588
+2,882
+0.5% +$191K
VTV icon
148
Vanguard Morningstar Value ETF
VTV
$193B
$37.9M 0.14%
318,598
-13,488
-4% -$1.52M
AGG icon
149
iShares Core US Aggregate Bond ETF
AGG
$138B
$37.3M 0.14%
315,979
+18,366
+6% +$2.16M
UPS icon
150
United Parcel Service
UPS
$88.4B
$37.3M 0.14%
221,676
+3,850
+2% +$650K
4 5
6
7 8

Similar funds

Parallax Volatility Advisers
Parallax Volatility Advisers San Francisco, California $38.6B AUM 45.89% 1-Year Est. Return
Credit Agricole
Credit Agricole Montrouge Cedex, France $38.1B AUM
Carson Wealth (CWM LLC)
Carson Wealth (CWM LLC) Omaha, Nebraska $38.1B AUM 19.66% 1-Year Est. Return
Nomura Asset Management
Nomura Asset Management Tokyo, Japan $38.8B AUM 30.94% 1-Year Est. Return
Nomura Holdings
Nomura Holdings Tokyo, Japan $37.7B AUM 34.44% 1-Year Est. Return
Fayez Sarofim & Co
Fayez Sarofim & Co Houston, Texas $39.1B AUM 15.14% 1-Year Est. Return
Grantham, Mayo, Van Otterloo & Co (GMO)
Grantham, Mayo, Van Otterloo & Co (GMO) Boston, Massachusetts $39.1B AUM 28.69% 1-Year Est. Return
HF
HRT Financial New York $40.1B AUM 58.22% 1-Year Est. Return

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.