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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
IT icon
376
Gartner
IT
$11.3B
$6.84M 0.03%
42,678
+220
+0.5% +$31.7K
CNI icon
377
Canadian National Railway
CNI
$76.4B
$6.75M 0.02%
61,477
-6,375
-9% -$689K
BALL icon
378
Ball Corp
BALL
$16.4B
$6.72M 0.02%
72,147
-614
-0.8% -$56.8K
DD icon
379
DuPont de Nemours
DD
$19.5B
$6.72M 0.02%
75,256
-1,155
-2% -$90.7K
VRTX icon
380
Vertex Pharmaceuticals
VRTX
$133B
$6.71M 0.02%
28,409
-4,316
-13% -$990K
IVW icon
381
iShares S&P 500 Growth ETF
IVW
$77.3B
$6.71M 0.02%
105,099
+87
+0.1% +$5.28K
TEL icon
382
TE Connectivity
TEL
$62B
$6.67M 0.02%
55,124
-1,965
-3% -$217K
HCSG icon
383
Healthcare Services Group
HCSG
$1.43B
$6.65M 0.02%
236,723
-7,288
-3% -$176K
NTNX icon
384
Nutanix
NTNX
$17.5B
$6.64M 0.02%
208,394
-14,158
-6% -$384K
CBOE icon
385
Cboe Global Markets
CBOE
$30.4B
$6.62M 0.02%
71,054
-8,288
-10% -$725K
CAI
386
DELISTED
CAI International, Inc.
CAI
$6.61M 0.02%
211,480
+2,988
+1% +$90.7K
BYND icon
387
Beyond Meat
BYND
$214M
$6.49M 0.02%
51,892
+9,178
+21% +$1.38M
WM icon
388
Waste Management
WM
$90.5B
$6.47M 0.02%
54,833
+38
+0.1% +$4.43K
WPM icon
389
Wheaton Precious Metals
WPM
$61.3B
$6.42M 0.02%
153,846
-30,523
-17% -$1.36M
XLU icon
390
State Street Utilities Select Sector SPDR ETF
XLU
$22.8B
$6.31M 0.02%
201,226
+4,706
+2% +$149K
GIS icon
391
General Mills
GIS
$20.4B
$6.28M 0.02%
106,843
+15,135
+17% +$916K
JBHT icon
392
JB Hunt Transport Services
JBHT
$25.9B
$6.25M 0.02%
45,711
-27,991
-38% -$3.71M
XLF icon
393
State Street Financial Select Sector SPDR ETF
XLF
$59.1B
$6.23M 0.02%
211,426
+46,927
+29% +$1.26M
IWS icon
394
iShares Russell Mid-Cap Value ETF
IWS
$16B
$6.16M 0.02%
63,527
+2,420
+4% +$218K
GSK icon
395
GSK
GSK
$101B
$6.15M 0.02%
133,641
+1,390
+1% +$63.8K
WFC icon
396
Wells Fargo
WFC
$269B
$6.11M 0.02%
202,316
+1,425
+0.7% +$36.9K
MUB icon
397
iShares National Muni Bond ETF
MUB
$45.9B
$5.98M 0.02%
51,061
+2,584
+5% +$300K
BAX icon
398
Baxter International
BAX
$13.9B
$5.92M 0.02%
73,782
-2,570
-3% -$204K
CHD icon
399
Church & Dwight Co
CHD
$24B
$5.92M 0.02%
67,844
+840
+1% +$74.4K
AYX
400
DELISTED
Alteryx Inc
AYX
$5.91M 0.02%
48,497
+46,583
+2,434% +$5.87M
14 15
16
17 18

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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.