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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
BHC icon
751
Bausch Health
BHC
$2.37B
$1.38M 0.01%
66,355
+795
+1% +$14.8K
HRL icon
752
Hormel Foods
HRL
$13.4B
$1.38M 0.01%
29,547
+16
+0.1% +$781
ITA icon
753
iShares US Aerospace & Defense ETF
ITA
$14.9B
$1.38M 0.01%
14,538
-6,946
-32% -$611K
DTD icon
754
WisdomTree US Total Dividend Fund
DTD
$1.7B
$1.38M 0.01%
26,252
-552
-2% -$27.5K
NVO
755
Novo Nordisk
NVO
$205B
$1.38M 0.01%
39,362
-7,536
-16% -$260K
AEM icon
756
Agnico Eagle Mines
AEM
$91.3B
$1.37M 0.01%
19,458
-5,125
-21% -$382K
MFC icon
757
Manulife Financial
MFC
$72.9B
$1.36M 0.01%
76,418
-8,073
-10% -$129K
BIP icon
758
Brookfield Infrastructure Partners
BIP
$18.4B
$1.36M 0.01%
41,226
+2,838
+7% +$92.4K
IMGN
759
DELISTED
Immunogen Inc
IMGN
$1.36M 0.01%
210,400
+41,030
+24% +$239K
MMSI icon
760
Merit Medical Systems
MMSI
$5.4B
$1.35M ﹤0.01%
24,322
+9,023
+59% +$466K
IJJ icon
761
iShares S&P Mid-Cap 400 Value ETF
IJJ
$9.08B
$1.34M ﹤0.01%
15,572
+3,290
+27% +$258K
CTXS
762
DELISTED
Citrix Systems Inc
CTXS
$1.34M ﹤0.01%
10,320
-1,002
-9% -$127K
EXC icon
763
Exelon
EXC
$47B
$1.34M ﹤0.01%
44,553
-9,228
-17% -$272K
SNAP icon
764
Snap
SNAP
$8.96B
$1.33M ﹤0.01%
26,623
-11,395
-30% -$473K
WTFC icon
765
Wintrust Financial
WTFC
$11B
$1.33M ﹤0.01%
21,770
+21
+0.1% +$1.13K
AXSM icon
766
Axsome Therapeutics
AXSM
$11.2B
$1.32M ﹤0.01%
16,267
+2,075
+15% +$155K
SLB icon
767
SLB Ltd
SLB
$77.3B
$1.32M ﹤0.01%
60,586
-9,544
-14% -$180K
ALLK
768
DELISTED
Allakos
ALLK
$1.31M ﹤0.01%
+9,374
New +$976K
RGEN icon
769
Repligen
RGEN
$9.45B
$1.31M ﹤0.01%
6,828
-78
-1% -$14.2K
GAIN icon
770
Gladstone Investment Corp
GAIN
$658M
$1.3M ﹤0.01%
129,114
+2,425
+2% +$23.1K
MSP
771
DELISTED
Datto Holding Corp.
MSP
$1.3M ﹤0.01%
+48,192
New +$1.37M
VTHR icon
772
Vanguard Russell 3000 ETF
VTHR
$4.89B
$1.29M ﹤0.01%
7,421
– –
AZPN
773
DELISTED
ASPEN TECHNOLOGY INC
AZPN
$1.29M ﹤0.01%
9,909
+164
+2% +$21.4K
DOMO icon
774
Domo
DOMO
$187M
$1.28M ﹤0.01%
20,152
-1,820
-8% -$78.5K
LNG icon
775
Cheniere Energy
LNG
$55B
$1.28M ﹤0.01%
+21,372
New +$1.15M
29 30
31
32 33

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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.