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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
EVH icon
151
Evolent Health
EVH
$471M
$37.2M 0.14%
2,319,887
+15,480
+0.7% +$205K
INTC icon
152
Intel
INTC
$509B
$37.1M 0.14%
744,405
+54,016
+8% +$2.64M
PCTY icon
153
Paylocity
PCTY
$7.73B
$37M 0.14%
179,562
-3,521
-2% -$677K
WORK
154
DELISTED
Slack Technologies, Inc.
WORK
$36.8M 0.14%
871,597
-715,766
-45% -$24.2M
TIP icon
155
iShares TIPS Bond ETF
TIP
$14.7B
$35.9M 0.13%
281,286
+49,588
+21% +$6.25M
WST icon
156
West Pharmaceutical
WST
$24.8B
$35.7M 0.13%
126,050
-997
-0.8% -$280K
GWW icon
157
W.W. Grainger
GWW
$61.5B
$35.7M 0.13%
87,307
+2,593
+3% +$1.02M
XBI icon
158
State Street SPDR S&P Biotech ETF
XBI
$10.5B
$35.4M 0.13%
251,745
+198,640
+374% +$25.4M
CVX icon
159
Chevron
CVX
$386B
$35.4M 0.13%
419,636
+5,784
+1% +$468K
IUSV icon
160
iShares Core S&P US Value ETF
IUSV
$27.8B
$33.9M 0.12%
544,653
+81,616
+18% +$4.78M
BRK.A icon
161
Berkshire Hathaway Class A
BRK.A
$1.09T
$33M 0.12%
95
-1
-1% -$331K
EMR icon
162
Emerson Electric
EMR
$91.4B
$32.6M 0.12%
405,930
+48,902
+14% +$3.64M
PANW icon
163
Palo Alto Networks
PANW
$315B
$32.5M 0.12%
549,342
+13,950
+3% +$652K
SHOP icon
164
Shopify
SHOP
$194B
$31.4M 0.12%
277,050
-8,020
-3% -$842K
EXEL icon
165
Exelixis
EXEL
$12.5B
$31.3M 0.11%
1,557,786
-838,022
-35% -$17.5M
CME icon
166
CME Group
CME
$94.3B
$31.2M 0.11%
171,609
+23,445
+16% +$3.99M
CL icon
167
Colgate-Palmolive
CL
$73.6B
$31.1M 0.11%
364,037
-9,178
-2% -$759K
COLD icon
168
Americold
COLD
$4.17B
$30.8M 0.11%
825,908
+51,449
+7% +$1.85M
T icon
169
AT&T
T
$166B
$30.3M 0.11%
1,392,816
+12,493
+0.9% +$269K
CCI icon
170
Crown Castle
CCI
$31.5B
$29.3M 0.11%
184,315
+5,842
+3% +$948K
IWD icon
171
iShares Russell 1000 Value ETF
IWD
$84B
$29.1M 0.11%
212,903
+7,874
+4% +$1.01M
AKAM icon
172
Akamai
AKAM
$17.6B
$29.1M 0.11%
276,925
+178,284
+181% +$18.7M
BAC icon
173
Bank of America
BAC
$453B
$29M 0.11%
955,782
-22,560
-2% -$605K
CMCSA icon
174
Comcast
CMCSA
$90.4B
$28.1M 0.1%
535,473
+10,933
+2% +$524K
TRMB icon
175
Trimble
TRMB
$13.1B
$28M 0.1%
418,929
+2,286
+0.5% +$131K
5 6
7
8 9

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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.