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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
ARNA
401
DELISTED
Arena Pharmaceuticals Inc
ARNA
$7.5M 0.02%
+80,664
New +$5.31M
NKTR icon
402
Nektar Therapeutics
NKTR
$2.58B
$7.41M 0.02%
36,552
-6,346
-15% -$1.38M
ODFL icon
403
Old Dominion Freight Line
ODFL
$44.9B
$7.4M 0.02%
41,312
-324
-0.8% -$54.6K
DFS
404
DELISTED
Discover Financial Services
DFS
$7.36M 0.02%
63,696
-261
-0.4% -$30.9K
MGK icon
405
Vanguard Morningstar Mega Cap Growth ETF
MGK
$34.2B
$7.36M 0.02%
141,130
+5,275
+4% +$267K
RHI icon
406
Robert Half
RHI
$4.37B
$7.34M 0.02%
65,822
+2,348
+4% +$261K
CNI icon
407
Canadian National Railway
CNI
$76.6B
$7.33M 0.02%
59,634
+23
+0% +$2.91K
TTWO icon
408
Take-Two Interactive
TTWO
$46.1B
$7.16M 0.02%
40,313
+3
+0% +$523
STZ icon
409
Constellation Brands
STZ
$23.2B
$7.13M 0.02%
28,425
-2,147
-7% -$489K
BLBD icon
410
Blue Bird Corp
BLBD
$2.18B
$7.1M 0.02%
454,245
+127,617
+39% +$2.53M
WPM icon
411
Wheaton Precious Metals
WPM
$60.9B
$7.1M 0.02%
165,487
+822
+0.5% +$33.8K
BKI
412
DELISTED
Black Knight, Inc. Common Stock
BKI
$7.08M 0.02%
85,477
+8,791
+11% +$656K
ADSK icon
413
Autodesk
ADSK
$52.6B
$7.07M 0.02%
25,135
+3,353
+15% +$977K
CHD icon
414
Church & Dwight Co
CHD
$24.5B
$7.04M 0.02%
68,731
-897
-1% -$81.3K
CRSP icon
415
CRISPR Therapeutics
CRSP
$5.17B
$6.97M 0.02%
92,022
-2,799
-3% -$245K
ADI icon
416
Analog Devices
ADI
$190B
$6.94M 0.02%
39,494
+2,395
+6% +$424K
BIDU icon
417
Baidu
BIDU
$37.2B
$6.86M 0.02%
46,119
+1,919
+4% +$300K
CDW icon
418
CDW
CDW
$17B
$6.85M 0.02%
33,462
+565
+2% +$107K
NET icon
419
Cloudflare
NET
$107B
$6.78M 0.02%
51,562
+1,827
+4% +$306K
AIRG icon
420
Airgain
AIRG
$72.4M
$6.74M 0.02%
633,910
+108,342
+21% +$1.17M
SCHP icon
421
Schwab US TIPS ETF
SCHP
$16.3B
$6.7M 0.02%
213,136
+57,920
+37% +$1.82M
BKNG icon
422
Booking.com
BKNG
$161B
$6.65M 0.02%
69,325
+2,150
+3% +$204K
SMH icon
423
VanEck Semiconductor ETF
SMH
$73.2B
$6.61M 0.02%
42,794
+1,348
+3% +$195K
D icon
424
Dominion Energy
D
$59.3B
$6.6M 0.02%
84,048
+16,298
+24% +$1.23M
EVBG
425
DELISTED
Everbridge, Inc. Common Stock
EVBG
$6.58M 0.02%
97,785
-16,523
-14% -$2M
15 16
17
18 19

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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.