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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
SPTS icon
1401
State Street SPDR Portfolio Short Term Treasury ETF
SPTS
$6.11B
$307K ﹤0.01%
10,100
+5,100
+102% +$156K
JMST icon
1402
JPMorgan Ultra-Short Municipal Income ETF
JMST
$7.1B
$306K ﹤0.01%
6,000
– –
BERY
1403
DELISTED
Berry Global Group, Inc.
BERY
$306K ﹤0.01%
+4,510
New +$279K
CNP icon
1404
CenterPoint Energy
CNP
$26.8B
$303K ﹤0.01%
+10,872
New +$290K
STLD icon
1405
Steel Dynamics
STLD
$37.6B
$301K ﹤0.01%
+4,856
New +$304K
TX icon
1406
Ternium
TX
$10.6B
$301K ﹤0.01%
6,923
-44
-0.6% -$1.85K
VPU
1407
Vanguard Utilities ETF
VPU
$8.36B
$301K ﹤0.01%
1,924
+439
+30% +$64.7K
WTS icon
1408
Watts Water Technologies
WTS
$13.1B
$300K ﹤0.01%
+1,545
New +$294K
AYI icon
1409
Acuity Brands
AYI
$10.8B
$299K ﹤0.01%
1,411
-51
-3% -$10.5K
TILT icon
1410
FlexShares Morningstar US Market Factors Tilt Index Fund
TILT
$2.26B
$299K ﹤0.01%
1,641
– –
IAA
1411
DELISTED
IAA, Inc. Common Stock
IAA
$299K ﹤0.01%
+5,898
New +$314K
BUSE icon
1412
First Busey Corp
BUSE
$2.56B
$298K ﹤0.01%
11,000
– –
SAM icon
1413
Boston Beer
SAM
$1.92B
$298K ﹤0.01%
590
+75
+15% +$37.5K
WTRG icon
1414
Essential Utilities
WTRG
$11.4B
$298K ﹤0.01%
5,550
-104
-2% -$5.05K
FE icon
1415
FirstEnergy
FE
$27.5B
$297K ﹤0.01%
7,152
+8
+0.1% +$308
PII icon
1416
Polaris
PII
$4.07B
$297K ﹤0.01%
+2,698
New +$318K
SCHO icon
1417
Schwab Short-Term US Treasury ETF
SCHO
$12.8B
$297K ﹤0.01%
+11,670
New +$298K
TRHC
1418
DELISTED
Tabula Rasa HealthCare, Inc. Common Stock
TRHC
$296K ﹤0.01%
19,735
-84,791
-81% -$1.54M
Y
1419
DELISTED
Alleghany Corp
Y
$296K ﹤0.01%
+443
New +$295K
XLG icon
1420
Invesco S&P 500 Top 50 ETF
XLG
$11B
$293K ﹤0.01%
7,950
– –
ONC
1421
BeOne Medicines Ltd
ONC
$39.4B
$293K ﹤0.01%
1,083
+333
+44% +$112K
EXR icon
1422
Extra Space Storage
EXR
$31.6B
$292K ﹤0.01%
1,289
+10
+0.8% +$1.98K
GEN icon
1423
Gen Digital
GEN
$17.5B
$292K ﹤0.01%
11,231
-204
-2% -$5.16K
IDCC icon
1424
InterDigital
IDCC
$8.89B
$292K ﹤0.01%
4,080
– –
OVID icon
1425
Ovid Therapeutics
OVID
$491M
$292K ﹤0.01%
90,852
-6,146
-6% -$21.1K
55 56
57
58 59

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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.