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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
SPIP icon
1501
State Street SPDR Portfolio TIPS ETF
SPIP
$1.01B
$122K ﹤0.01%
3,903
– –
FAX
1502
abrdn Asia-Pacific Income Fund
FAX
$604M
$118K ﹤0.01%
4,433
– –
DGS icon
1503
WisdomTree Emerging Markets SmallCap Dividend Fund
DGS
$1.78B
$117K ﹤0.01%
2,443
+1
+0% +$45
SJNK icon
1504
State Street SPDR Bloomberg Short Term High Yield Bond ETF
SJNK
$4.8B
$117K ﹤0.01%
4,345
-84
-2% -$2.22K
AFMD
1505
DELISTED
Affimed
AFMD
$116K ﹤0.01%
+2,000
New +$94.2K
BSM icon
1506
Black Stone Minerals
BSM
$3.08B
$116K ﹤0.01%
+17,433
New +$118K
IXJ icon
1507
iShares Global Healthcare ETF
IXJ
$4.23B
$116K ﹤0.01%
1,513
-75
-5% -$5.52K
BBH icon
1508
VanEck Biotech ETF
BBH
$429M
$115K ﹤0.01%
675
+225
+50% +$37.1K
OPPE
1509
WisdomTree European Opportunities Fund
OPPE
$295M
$115K ﹤0.01%
3,750
– –
LBTYA icon
1510
Liberty Global Class A
LBTYA
$3.55B
$115K ﹤0.01%
4,732
+257
+6% +$5.72K
XLRE icon
1511
State Street Real Estate Select Sector SPDR ETF
XLRE
$8.56B
$113K ﹤0.01%
3,081
+16
+0.5% +$580
NEAR icon
1512
iShares Short Maturity Bond ETF
NEAR
$4.88B
$111K ﹤0.01%
2,217
-28
-1% -$1.4K
UEC icon
1513
Uranium Energy
UEC
$5.62B
$111K ﹤0.01%
63,000
+1,000
+2% +$1.18K
BMVP icon
1514
Invesco Bloomberg MVP Multi-factor ETF
BMVP
$106M
$109K ﹤0.01%
3,096
– –
SCHR
1515
Schwab Intermediately-Term US Treasury ETF
SCHR
$13.3B
$108K ﹤0.01%
3,698
-1,934
-34% -$56.3K
SPIB icon
1516
State Street SPDR Portfolio Intermediate Term Corporate Bond ETF
SPIB
$11.5B
$108K ﹤0.01%
2,905
-1,002
-26% -$37K
SCHD icon
1517
Schwab US Dividend Equity ETF
SCHD
$107B
$107K ﹤0.01%
4,998
-180
-3% -$3.65K
CRD.B icon
1518
Crawford & Co Class B
CRD.B
$576M
$104K ﹤0.01%
+14,434
New +$104K
EWZ icon
1519
iShares MSCI Brazil ETF
EWZ
$8.57B
$104K ﹤0.01%
2,805
+26
+0.9% +$839
PIO icon
1520
Invesco Global Water ETF
PIO
$278M
$102K ﹤0.01%
2,934
+17
+0.6% +$570
QQQH
1521
NEOS Nasdaq-100 Hedged Equity Income ETF
QQQH
$386M
$102K ﹤0.01%
+1,850
New +$99.1K
ATHX
1522
DELISTED
Athersys, Inc. Common Stock
ATHX
$102K ﹤0.01%
2,332
+190
+9% +$8.64K
ILF icon
1523
iShares Latin America 40 ETF
ILF
$3.71B
$101K ﹤0.01%
3,428
– –
TBT icon
1524
ProShares Trust UltraShort Lehman 20+ Year Treasury
TBT
$309M
$101K ﹤0.01%
6,154
-14,358
-70% -$235K
EWY icon
1525
iShares MSCI South Korea ETF
EWY
$27.2B
$100K ﹤0.01%
1,157
+50
+5% +$3.7K
59 60
61
62 63

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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.