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William Blair & Company

William Blair & Company Portfolio holdings

AUM $34.9B
1-Year Est. Return 18.88%
This Fund
S&P 500
This Quarter Est. Return
+8.27%
1 Year Est. Return
+18.88%
3 Year Est. Return
+73.84%
5 Year Est. Return
+90.13%
10 Year Est. Return
+563.35%
AUM
$31.9B
AUM Growth
+$2.51B
Cap. Flow
+$830M
Cap. Flow %
2.6%
Top 10 Hldgs %
23.75%
Holding
2,051
New
174
Increased
889
Reduced
606
Closed
88

Top Buys

Rank Stock Value
1
AMZN icon
Amazon
AMZN
+$66.8M
2
PODD icon
Insulet
PODD
+$47M
3
XMTR icon
Xometry
XMTR
+$44.1M
4
SPY icon
State Street SPDR S&P 500 ETF Trust
SPY
+$43.7M
5
AON icon
Aon
AON
+$36.1M

Top Sells

Rank Stock Value
1
PYPL icon
PayPal
PYPL
+$73.8M
2
ATVI
Activision Blizzard
ATVI
+$46.9M
3
OSH
Oak Street Health, Inc.
OSH
+$43.6M
4
DIS icon
Walt Disney
DIS
+$34M
5
PGR icon
Progressive
PGR
+$32.6M

Sector Composition

Rank Sector Weight
1 Technology 26.2%
2 Healthcare 19.21%
3 Financials 10.7%
4 Consumer Discretionary 10.6%
5 Industrials 10.38%
Name Market Value Portfolio Weight Shares or Principal Change
in Stake 		Capital Flow
BIL icon
1676
State Street SPDR Bloomberg 1-3 Month T-Bill ETF
BIL
$46.9B
$98K ﹤0.01%
1,075
+126
+13% +$11.5K
DDG
1677
DELISTED
Proshares Short Oil & Gas
DDG
$98K ﹤0.01%
6,520
– –
SPIB icon
1678
State Street SPDR Portfolio Intermediate Term Corporate Bond ETF
SPIB
$11.5B
$97K ﹤0.01%
2,672
-23
-0.9% -$834
CORP icon
1679
PIMCO Investment Grade Corporate Bond Index Exchange-Traded Fund
CORP
$1.58B
$95K ﹤0.01%
838
-1,496
-64% -$170K
FXL icon
1680
First Trust Technology AlphaDEX Fund
FXL
$2.79B
$94K ﹤0.01%
715
– –
IOO icon
1681
iShares Global 100 ETF
IOO
$9.25B
$94K ﹤0.01%
1,209
+8
+0.7% +$605
JNK icon
1682
State Street SPDR Bloomberg High Yield Bond ETF
JNK
$6.92B
$94K ﹤0.01%
864
+266
+44% +$28.8K
SHYG icon
1683
iShares 0-5 Year High Yield Corporate Bond ETF
SHYG
$7.62B
$92K ﹤0.01%
2,024
+542
+37% +$24.6K
AFMD
1684
DELISTED
Affimed
AFMD
$91K ﹤0.01%
1,650
– –
PBW icon
1685
Invesco WilderHill Clean Energy ETF
PBW
$429M
$91K ﹤0.01%
1,278
+547
+75% +$44.7K
KWEB icon
1686
KraneShares CSI China Internet ETF
KWEB
$5.67B
$90K ﹤0.01%
2,454
-877
-26% -$40.4K
EDU icon
1687
New Oriental
EDU
$8.98B
$89K ﹤0.01%
4,239
-100
-2% -$2.16K
SWN
1688
DELISTED
Southwestern Energy Company
SWN
$89K ﹤0.01%
19,035
-10,000
-34% -$49.8K
FBT icon
1689
First Trust NYSE Arca Biotechnology Index Fund
FBT
$2.83B
$88K ﹤0.01%
543
– –
CWI icon
1690
State Street SPDR MSCI ACWI ex-US ETF
CWI
$2.85B
$85K ﹤0.01%
2,883
– –
ILF icon
1691
iShares Latin America 40 ETF
ILF
$3.76B
$83K ﹤0.01%
3,528
-512
-13% -$12.8K
LBRDA icon
1692
Liberty Broadband Class A
LBRDA
$5.16B
$83K ﹤0.01%
514
+264
+106% +$42.8K
MGI
1693
DELISTED
MoneyGram International, Inc. New
MGI
$83K ﹤0.01%
10,462
– –
BBH icon
1694
VanEck Biotech ETF
BBH
$422M
$82K ﹤0.01%
433
-400
-48% -$77.1K
MBT
1695
DELISTED
Mobile TeleSystems Public Joint Stock Company American Depositary Shares (Each representing 2 Shares
MBT
$82K ﹤0.01%
+10,352
New +$90.2K
IMH
1696
DELISTED
Impac Mortgage Holdings Inc.
IMH
$82K ﹤0.01%
73,470
– –
NWG icon
1697
NatWest
NWG
$76.4B
$80K ﹤0.01%
+12,135
New +$78.8K
SPYD icon
1698
State Street SPDR Portfolio S&P 500 High Dividend ETF
SPYD
$8.78B
$80K ﹤0.01%
1,914
+311
+19% +$12.7K
TALK icon
1699
Talkspace
TALK
$874M
$80K ﹤0.01%
40,481
-69,256
-63% -$198K
NMTR
1700
DELISTED
9 Meters Biopharma
NMTR
$80K ﹤0.01%
4,096
+2,696
+193% +$60.3K
66 67
68
69 70

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William Blair & Company's Q4 2021 Portfolio in Review

As of Q4 2021, William Blair & Company held 2,051 positions worth $31.9B, up 8.5% from $29.4B the previous quarter. Its ten largest holdings account for 24% of the portfolio.

William Blair & Company's Q4 2021 filing shows 174 new, 889 increased, 606 reduced and 88 closed positions. Its largest new stake was Portillo's: 759,814 shares worth $28.5M. The largest sale was PayPal, an estimated $73.8M.

By sector, the portfolio is most concentrated in Technology at 26% of assets, up from 26% a quarter earlier, followed by Healthcare and Financials.

  • William Blair & Company's largest Q4 2021 buy was Portillo's: 759,814 shares worth $28.5M.
  • William Blair & Company added most to Amazon in Q4 2021, an estimated $66.8M increase.
  • William Blair & Company's biggest Q4 2021 reduction was PayPal, cutting an estimated $73.8M.
  • William Blair & Company fully exited Asana in Q4 2021, selling an estimated $6.06M.
  • William Blair & Company's ten largest holdings make up 24% of its $31.9B portfolio in Q4 2021.
  • William Blair & Company opened 174 new positions and closed 88 in Q4 2021.
  • William Blair & Company's portfolio value rose 8.5% quarter-over-quarter to $31.9B.

Based on William Blair & Company's 13F filing for Q4 2021, filed 14 Feb 2022.