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
MET icon
601
MetLife
MET
$61.7B
$2.38M 0.01%
50,688
+4,633
+10% +$201K
BLBD icon
602
Blue Bird Corp
BLBD
$2.06B
$2.38M 0.01%
130,285
-81,114
-38% -$1.19M
GBCI icon
603
Glacier Bancorp
GBCI
$6.47B
$2.38M 0.01%
51,645
+42,390
+458% +$1.71M
SLV icon
604
iShares Silver Trust
SLV
$31.4B
$2.37M 0.01%
96,533
+4,077
+4% +$92.7K
WELL icon
605
Welltower
WELL
$169B
$2.35M 0.01%
36,410
-4,934
-12% -$299K
XEL icon
606
Xcel Energy
XEL
$49.4B
$2.35M 0.01%
35,245
-1,518
-4% -$106K
HDV
607
iShares Core High Dividend ETF
HDV
$15.1B
$2.34M 0.01%
133,545
+3,360
+3% +$56.9K
TLT icon
608
iShares 20+ Year Treasury Bond ETF
TLT
$40.8B
$2.33M 0.01%
14,805
+1,570
+12% +$249K
EGRX
609
DELISTED
Eagle Pharmaceuticals, Inc.
EGRX
$2.31M 0.01%
49,705
+617
+1% +$28.9K
IBN icon
610
ICICI Bank
IBN
$106B
$2.31M 0.01%
155,446
-34,900
-18% -$439K
PRU icon
611
Prudential Financial
PRU
$42.8B
$2.3M 0.01%
29,414
+8,201
+39% +$593K
W icon
612
Wayfair
W
$13.9B
$2.27M 0.01%
10,040
+9,327
+1,308% +$2.48M
VV icon
613
Vanguard Morningstar Large-Cap ETF
VV
$54.8B
$2.25M 0.01%
12,812
+37
+0.3% +$6.15K
CUB
614
DELISTED
Cubic Corporation
CUB
$2.23M 0.01%
36,006
-1,930
-5% -$117K
IYW icon
615
iShares US Technology ETF
IYW
$25.7B
$2.23M 0.01%
26,161
-1,107
-4% -$88.5K
BBBY
616
DELISTED
Bed Bath & Beyond Inc
BBBY
$2.21M 0.01%
124,510
-18,850
-13% -$391K
HZNP
617
DELISTED
Horizon Therapeutics Public Limited Company Ordinary Shares
HZNP
$2.21M 0.01%
30,221
-304
-1% -$22.6K
SPDW icon
618
State Street SPDR Portfolio Developed World ex-US ETF
SPDW
$42B
$2.21M 0.01%
65,368
-3,857
-6% -$122K
JBTM
619
JBT Marel
JBTM
$6.09B
$2.18M 0.01%
19,135
-308
-2% -$31.8K
PEN icon
620
Penumbra
PEN
$12.9B
$2.17M 0.01%
12,387
+1,101
+10% +$241K
SUB icon
621
iShares Short-Term National Muni Bond ETF
SUB
$11.4B
$2.16M 0.01%
19,949
+1,334
+7% +$144K
CHTR icon
622
Charter Communications
CHTR
$18.3B
$2.15M 0.01%
3,257
+62
+2% +$39.5K
VAPO
623
DELISTED
Vapotherm, Inc. Common Stock
VAPO
$2.15M 0.01%
10,021
+3,330
+50% +$743K
FXH icon
624
First Trust Health Care AlphaDEX Fund
FXH
$1.11B
$2.14M 0.01%
19,865
+284
+1% +$28.9K
MXIM
625
DELISTED
Maxim Integrated Products
MXIM
$2.14M 0.01%
24,143
+1,613
+7% +$127K
23 24
25
26 27

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 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
HF
HRT Financial New York $40.1B AUM 58.22% 1-Year Est. Return
First Manhattan
First Manhattan New York $36.1B AUM 11.5% 1-Year Est. Return
Viking Global Investors
Viking Global Investors Stamford, Connecticut $35.7B AUM 21.3% 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.