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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
RESE
1576
DELISTED
WisdomTree Emerging Markets ESG Fund
RESE
$61K ﹤0.01%
1,719
+3
+0.2% +$100
BLV icon
1577
Vanguard Long-Term Bond ETF
BLV
$5.7B
$60K ﹤0.01%
548
-9
-2% -$1K
DBEU icon
1578
Xtrackers MSCI Europe Hedged Equity ETF
DBEU
$798M
$60K ﹤0.01%
2,000
-1,866
-48% -$53.9K
SCHV
1579
Schwab US Large-Cap Value ETF
SCHV
$16.3B
$60K ﹤0.01%
3,000
-15
-0.5% -$280
HEWG
1580
DELISTED
iShares Currency Hedged MSCI Germany ETF
HEWG
$60K ﹤0.01%
2,039
-357
-15% -$10.1K
AIVI icon
1581
WisdomTree International AI Enhanced Value Fund
AIVI
$63.1M
$59K ﹤0.01%
1,450
– –
PSK icon
1582
State Street SPDR ICE Preferred Securities ETF
PSK
$683M
$59K ﹤0.01%
1,330
+50
+4% +$2.19K
PID icon
1583
Invesco International Dividend Achievers ETF
PID
$912M
$58K ﹤0.01%
3,800
-1,000
-21% -$14.2K
SPTL icon
1584
State Street SPDR Portfolio Long Term Treasury ETF
SPTL
$10.7B
$58K ﹤0.01%
1,278
– –
EMAN
1585
DELISTED
eMagin Corporation
EMAN
$58K ﹤0.01%
35,100
– –
FNDX icon
1586
Schwab Fundamental US Large Company Index ETF
FNDX
$27.4B
$57K ﹤0.01%
3,753
-2,037
-35% -$28.7K
SCHO icon
1587
Schwab Short-Term US Treasury ETF
SCHO
$12.9B
$57K ﹤0.01%
2,230
+1,998
+861% +$51.4K
IMCG icon
1588
iShares Morningstar Mid-Cap Growth ETF
IMCG
$4.16B
$56K ﹤0.01%
882
– –
BRF icon
1589
VanEck Brazil Small-Cap ETF
BRF
$20.4M
$55K ﹤0.01%
2,572
-53
-2% -$1.01K
SCHE icon
1590
Schwab Emerging Markets Equity ETF
SCHE
$12.9B
$55K ﹤0.01%
1,789
-514
-22% -$14.9K
SLYV icon
1591
State Street SPDR S&P 600 Small Cap Value ETF
SLYV
$5.08B
$55K ﹤0.01%
824
– –
GUNR icon
1592
FlexShares Global Upstream Natural Resources Index Fund
GUNR
$7.09B
$54K ﹤0.01%
1,674
-2,884
-63% -$86.8K
IPAY icon
1593
Amplify Mobile Payments ETF
IPAY
$181M
$54K ﹤0.01%
819
+77
+10% +$4.57K
TRVN
1594
DELISTED
Trevena, Inc.
TRVN
$54K ﹤0.01%
40
– –
SPYD icon
1595
State Street SPDR Portfolio S&P 500 High Dividend ETF
SPYD
$7.69B
$53K ﹤0.01%
1,603
-719
-31% -$22.2K
IGF icon
1596
iShares Global Infrastructure ETF
IGF
$10.7B
$52K ﹤0.01%
1,197
-5,198
-81% -$218K
IYG icon
1597
iShares US Financial Services ETF
IYG
$2.22B
$52K ﹤0.01%
1,041
– –
LGF.B
1598
DELISTED
Lions Gate Entertainment Corp. Class B Non-Voting Shares
LGF.B
$52K ﹤0.01%
4,986
-1,150
-19% -$9.55K
DIM icon
1599
WisdomTree International MidCap Dividend Fund
DIM
$169M
$51K ﹤0.01%
800
– –
SPMD icon
1600
State Street SPDR Portfolio S&P 400 Mid Cap ETF
SPMD
$19B
$51K ﹤0.01%
1,271
+96
+8% +$3.56K
62 63
64
65 66

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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.