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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
GAIN icon
651
Gladstone Investment Corp
GAIN
$661M
$2.56M 0.01%
150,079
+5,705
+4% +$91K
WTFC icon
652
Wintrust Financial
WTFC
$10.7B
$2.55M 0.01%
28,054
-2,024
-7% -$181K
EBAY icon
653
eBay
EBAY
$49.8B
$2.55M 0.01%
38,287
+2,597
+7% +$185K
HAS icon
654
Hasbro
HAS
$13.2B
$2.54M 0.01%
24,950
+16,429
+193% +$1.58M
AVTR icon
655
Avantor
AVTR
$9.19B
$2.54M 0.01%
60,148
-4,165
-6% -$164K
PDBC icon
656
Invesco Actively Managed Exch-Traded Commodity Fd Tr Invesco Optimum Yield Diversified Commodity Strategy No K-1 ETF
PDBC
$6.3B
$2.52M 0.01%
179,114
-24,063
-12% -$474K
ENTG icon
657
Entegris
ENTG
$23.2B
$2.52M 0.01%
18,165
+10,084
+125% +$1.41M
BFAM icon
658
Bright Horizons
BFAM
$3.86B
$2.51M 0.01%
19,961
+6,115
+44% +$849K
JBTM
659
JBT Marel
JBTM
$6.39B
$2.51M 0.01%
16,354
-494
-3% -$77.3K
SUSA icon
660
iShares ESG Optimized MSCI USA ETF
SUSA
$4.18B
$2.51M 0.01%
23,624
+79
+0.3% +$8.12K
LZ icon
661
LegalZoom.com
LZ
$988M
$2.5M 0.01%
155,274
+72,158
+87% +$1.53M
SRE icon
662
Sempra
SRE
$54.8B
$2.49M 0.01%
37,714
-588
-2% -$37.3K
MORN icon
663
Morningstar
MORN
$7.53B
$2.49M 0.01%
7,287
-135
-2% -$41.8K
RAMP icon
664
LiveRamp
RAMP
$2.3B
$2.48M 0.01%
51,679
-323
-0.6% -$16.3K
AMG icon
665
Affiliated Managers Group
AMG
$9.76B
$2.47M 0.01%
15,005
+2
+0% +$335
VLO icon
666
Valero Energy
VLO
$85.9B
$2.46M 0.01%
32,795
-49
-0.1% -$3.65K
FTA icon
667
First Trust Large Cap Value AlphaDEX Fund
FTA
$1.4B
$2.45M 0.01%
+35,104
New +$2.38M
OEF icon
668
iShares S&P 100 ETF
OEF
$20.6B
$2.45M 0.01%
11,169
-309
-3% -$65.5K
RY icon
669
Royal Bank of Canada
RY
$293B
$2.44M 0.01%
23,040
-278
-1% -$28.9K
LEN icon
670
Lennar Class A
LEN
$21.2B
$2.44M 0.01%
21,736
+73
+0.3% +$7.46K
BHP icon
671
BHP
BHP
$230B
$2.44M 0.01%
45,244
+20,860
+86% +$1.04M
MAIN icon
672
Main Street Capital
MAIN
$5.48B
$2.43M 0.01%
54,238
-7,085
-12% -$312K
KKR icon
673
KKR & Co
KKR
$92.3B
$2.42M 0.01%
32,482
+17,383
+115% +$1.28M
MKTX icon
674
MarketAxess Holdings
MKTX
$5.72B
$2.42M 0.01%
5,881
-249
-4% -$98.2K
HTGC icon
675
Hercules Capital
HTGC
$3.23B
$2.4M 0.01%
144,942
-1,460
-1% -$24.8K
25 26
27
28 29

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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.