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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
PSX icon
701
Phillips 66
PSX
$92.1B
$1.66M 0.01%
23,670
-3,367
-12% -$198K
PAYC icon
702
Paycom
PAYC
$9.82B
$1.65M 0.01%
3,647
+304
+9% +$121K
NOVT icon
703
Novanta
NOVT
$6.36B
$1.63M 0.01%
13,755
-829
-6% -$96.7K
ET icon
704
Energy Transfer Partners
ET
$71.8B
$1.62M 0.01%
261,748
-41,215
-14% -$249K
RPM icon
705
RPM International
RPM
$14.5B
$1.61M 0.01%
17,794
-162
-0.9% -$14.3K
STIM icon
706
Neuronetics
STIM
$231M
$1.61M 0.01%
145,335
+1,667
+1% +$12.5K
GGT
707
Gabelli Multimedia Trust
GGT
$176M
$1.61M 0.01%
205,284
-5,735
-3% -$40.9K
MRNA icon
708
Moderna
MRNA
$25.3B
$1.6M 0.01%
15,293
-1,790
-10% -$181K
NLY icon
709
Annaly Capital Management
NLY
$17.6B
$1.59M 0.01%
47,172
+14,969
+46% +$463K
SPHQ icon
710
Invesco S&P 500 Quality ETF
SPHQ
$20.1B
$1.58M 0.01%
37,473
+458
+1% +$18.4K
VTEB icon
711
Vanguard Tax-Exempt Bond Index Fund
VTEB
$46.1B
$1.58M 0.01%
28,578
+2,096
+8% +$114K
KSS icon
712
Kohl's
KSS
$2.22B
$1.57M 0.01%
38,669
+369
+1% +$10.7K
WHR icon
713
Whirlpool
WHR
$2.82B
$1.57M 0.01%
8,701
+477
+6% +$91.4K
IVOG icon
714
Vanguard S&P Mid-Cap 400 Growth ETF
IVOG
$1.73B
$1.56M 0.01%
17,472
+172
+1% +$14.3K
TER icon
715
Teradyne
TER
$65.1B
$1.56M 0.01%
13,020
+1,871
+17% +$191K
AAP icon
716
Advance Auto Parts
AAP
$3.47B
$1.56M 0.01%
9,898
+538
+6% +$83K
AXON
717
Axon Enterprise
AXON
$49.8B
$1.55M 0.01%
12,687
-983
-7% -$113K
BCO icon
718
Brink's
BCO
$4.71B
$1.55M 0.01%
21,547
+789
+4% +$45.9K
ARKK icon
719
ARK Innovation ETF
ARKK
$6.54B
$1.53M 0.01%
12,315
+1,234
+11% +$134K
LOPE icon
720
Grand Canyon Education
LOPE
$3.79B
$1.53M 0.01%
16,403
+528
+3% +$45.1K
CABO icon
721
Cable One
CABO
$201M
$1.53M 0.01%
685
+10
+1% +$19.8K
HIW icon
722
Highwoods Properties
HIW
$3.5B
$1.53M 0.01%
+38,511
New +$1.39M
HBAN icon
723
Huntington Bancshares
HBAN
$36.1B
$1.52M 0.01%
120,765
+1,627
+1% +$18.5K
IEF icon
724
iShares 7-10 Year Treasury Bond ETF
IEF
$47.4B
$1.52M 0.01%
12,715
-1,322
-9% -$159K
CBRL icon
725
Cracker Barrel
CBRL
$1.32B
$1.52M 0.01%
11,553
– –
27 28
29
30 31

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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.