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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
EFAV icon
551
iShares MSCI EAFE Min Vol Factor ETF
EFAV
$5.46B
$2.91M 0.01%
39,685
+1,618
+4% +$114K
SRE icon
552
Sempra
SRE
$56.5B
$2.91M 0.01%
45,700
+436
+1% +$28K
SSTI icon
553
SoundThinking
SSTI
$105M
$2.9M 0.01%
77,009
+11,385
+17% +$374K
PRFT
554
DELISTED
Perficient Inc
PRFT
$2.9M 0.01%
60,842
-2,408
-4% -$109K
NBIX icon
555
Neurocrine Biosciences
NBIX
$15.5B
$2.9M 0.01%
+30,229
New +$2.92M
ENB icon
556
Enbridge
ENB
$112B
$2.88M 0.01%
90,068
-1,956
-2% -$59.5K
IZRL icon
557
ARK Israel Innovative Technology ETF
IZRL
$140M
$2.86M 0.01%
96,490
– –
CHRW icon
558
C.H. Robinson
CHRW
$17.4B
$2.85M 0.01%
30,378
+989
+3% +$94.3K
RSG icon
559
Republic Services
RSG
$66.1B
$2.85M 0.01%
29,576
+2,137
+8% +$203K
TIG
560
DELISTED
Trean Insurance Group, Inc. Common Stock
TIG
$2.83M 0.01%
215,817
+157,878
+272% +$2.1M
JJSF icon
561
J&J Snack Foods
JJSF
$1.69B
$2.82M 0.01%
18,157
+676
+4% +$98.5K
PPG icon
562
PPG Industries
PPG
$25.5B
$2.81M 0.01%
19,488
-2,794
-13% -$389K
PODD icon
563
Insulet
PODD
$10B
$2.78M 0.01%
10,878
-2,944
-21% -$730K
EPAY
564
DELISTED
Bottomline Technologies Inc
EPAY
$2.74M 0.01%
52,027
-7,410
-12% -$337K
A icon
565
Agilent Technologies
A
$42B
$2.74M 0.01%
23,134
+591
+3% +$65.4K
VVNT
566
DELISTED
Vivint Smart Home, Inc. Class A Common Stock
VVNT
$2.73M 0.01%
131,745
+82,101
+165% +$1.63M
VRM icon
567
Vroom Inc
VRM
$52.3M
$2.73M 0.01%
833
+763
+1,090% +$2.52M
KHC icon
568
Kraft Heinz
KHC
$29.7B
$2.72M 0.01%
78,483
+19,683
+33% +$639K
CMI icon
569
Cummins
CMI
$87.5B
$2.71M 0.01%
11,925
+415
+4% +$93.2K
YUMC icon
570
Yum China
YUMC
$16.2B
$2.7M 0.01%
47,307
-304
-0.6% -$17.1K
SPLV icon
571
Invesco S&P 500 Low Volatility ETF
SPLV
$7.2B
$2.69M 0.01%
47,828
+3,475
+8% +$191K
RSI.WS
572
DELISTED
Rush Street Interactive, Inc. Redeemable Warrants, each whole warrant exercisable for one share of C
RSI.WS
$2.68M 0.01%
+349,641
New +$2.64M
INGR icon
573
Ingredion
INGR
$6.63B
$2.67M 0.01%
33,873
+3,250
+11% +$251K
AOS icon
574
A.O. Smith
AOS
$8.43B
$2.66M 0.01%
48,487
+10,594
+28% +$584K
LHCG
575
DELISTED
LHC Group LLC
LHCG
$2.65M 0.01%
12,421
-73
-0.6% -$15.5K
21 22
23
24 25

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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.