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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
PSQ icon
1551
ProShares Short QQQ
PSQ
$642M
$75K ﹤0.01%
1,034
– –
LGF.A
1552
DELISTED
Lions Gate Entertainment Corp. Class A Voting Shares
LGF.A
$74K ﹤0.01%
6,500
– –
VBIV
1553
DELISTED
VBI Vaccines, Inc. New Common Stock (Canada)
VBIV
$74K ﹤0.01%
+901
New +$76.8K
GERM
1554
DELISTED
Amplify Treatments, Testing and Advancements ETF
GERM
$73K ﹤0.01%
2,332
+20
+0.9% +$609
AKBA icon
1555
Akebia Therapeutics
AKBA
$248M
$72K ﹤0.01%
25,552
-47,250
-65% -$138K
SMOG icon
1556
VanEck Low Carbon Energy ETF
SMOG
$136M
$72K ﹤0.01%
433
– –
VRNT
1557
DELISTED
Verint Systems
VRNT
$72K ﹤0.01%
2,096
-50
-2% -$1.42K
LIT icon
1558
Global X Lithium & Battery Tech ETF
LIT
$1.61B
$71K ﹤0.01%
1,155
+450
+64% +$22.3K
MDYG icon
1559
State Street SPDR S&P 400 Mid Cap Growth ETF
MDYG
$2.96B
$71K ﹤0.01%
1,018
-57
-5% -$3.65K
PAYS icon
1560
Paysign
PAYS
$723M
$70K ﹤0.01%
15,120
-10,800
-42% -$56.5K
DON icon
1561
WisdomTree US MidCap Dividend Fund
DON
$4.1B
$69K ﹤0.01%
1,973
-1,124
-36% -$36.5K
FXL icon
1562
First Trust Technology AlphaDEX Fund
FXL
$2.84B
$69K ﹤0.01%
615
– –
AVDL
1563
DELISTED
Avadel Pharmaceuticals
AVDL
$68K ﹤0.01%
10,250
+250
+3% +$1.56K
BKLN icon
1564
Invesco Senior Loan ETF
BKLN
$6.75B
$68K ﹤0.01%
3,068
-169
-5% -$3.71K
EZM icon
1565
WisdomTree US MidCap Fund
EZM
$957M
$68K ﹤0.01%
1,563
– –
NGD
1566
DELISTED
New Gold Inc
NGD
$68K ﹤0.01%
31,000
-300
-1% -$610
VOOG icon
1567
Vanguard S&P 500 Growth ETF
VOOG
$27.2B
$68K ﹤0.01%
1,770
+900
+103% +$32.8K
FREL icon
1568
Fidelity MSCI Real Estate Index ETF
FREL
$1.47B
$67K ﹤0.01%
2,657
– –
SIEN
1569
DELISTED
Sientra, Inc.
SIEN
$67K ﹤0.01%
1,720
-500
-23% -$22.4K
STPZ icon
1570
PIMCO 1-5 Year US TIPS Index Exchange-Traded Fund
STPZ
$524M
$66K ﹤0.01%
1,221
-663
-35% -$35.6K
WTV icon
1571
WisdomTree US Value Fund
WTV
$3.36B
$64K ﹤0.01%
1,288
– –
FM
1572
DELISTED
iShares Frontier and Select EM ETF
FM
$64K ﹤0.01%
2,261
+791
+54% +$21.6K
BGY icon
1573
BlackRock Enhanced International Dividend Trust
BGY
$532M
$63K ﹤0.01%
10,787
– –
EWX icon
1574
State Street SPDR S&P Emerging Markets Small Cap ETF
EWX
$702M
$63K ﹤0.01%
1,220
-100
-8% -$4.8K
MCHI icon
1575
iShares MSCI China ETF
MCHI
$6.21B
$62K ﹤0.01%
760
– –
61 62
63
64 65

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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.