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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
+512.03%
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
MSFT icon
1
Microsoft
MSFT
$2.9T
$1.28B 4.02%
3,807,447
+96,863
+3% +$31.4M
AAPL icon
2
Apple
AAPL
$4.97T
$1.19B 3.74%
6,716,113
+227,487
+4% +$36M
AMZN icon
3
Amazon
AMZN
$2.44T
$956M 3%
5,731,760
+390,400
+7% +$66.8M
IDXX icon
4
Idexx Laboratories
IDXX
$44.9B
$849M 2.66%
1,290,032
-3,871
-0.3% -$2.43M
DXCM icon
5
DexCom
DXCM
$29B
$633M 1.99%
4,718,628
-93,680
-2% -$13.5M
GOOG icon
6
Alphabet (Google) Class C
GOOG
$4.11T
$591M 1.85%
4,084,240
+148,680
+4% +$21.5M
ZTS icon
7
Zoetis
ZTS
$32.7B
$585M 1.84%
2,398,422
-23,120
-1% -$5.06M
V icon
8
Visa
V
$701B
$515M 1.61%
2,374,633
+57,279
+2% +$12.3M
DHR icon
9
Danaher
DHR
$138B
$515M 1.61%
1,764,084
-9,615
-0.5% -$2.65M
VEEV icon
10
Veeva Systems
VEEV
$33.8B
$455M 1.43%
1,780,485
-31,803
-2% -$9.25M
MA icon
11
Mastercard
MA
$498B
$432M 1.36%
1,203,279
-25,985
-2% -$8.99M
SBUX icon
12
Starbucks
SBUX
$119B
$415M 1.3%
3,551,810
-158,300
-4% -$17.8M
WDAY icon
13
Workday
WDAY
$41.5B
$408M 1.28%
1,494,048
+2,118
+0.1% +$588K
GOOGL icon
14
Alphabet (Google) Class A
GOOGL
$4.12T
$376M 1.18%
2,595,820
+130,160
+5% +$18.7M
ADBE icon
15
Adobe
ADBE
$105B
$375M 1.18%
660,987
-861
-0.1% -$538K
PYPL icon
16
PayPal
PYPL
$50.3B
$357M 1.12%
1,892,521
-341,241
-15% -$73.8M
INTU icon
17
Intuit
INTU
$91.1B
$304M 0.95%
472,611
+24,246
+5% +$15M
SPY icon
18
State Street SPDR S&P 500 ETF Trust
SPY
$771B
$304M 0.95%
639,360
+95,119
+17% +$43.7M
ECL icon
19
Ecolab
ECL
$79.8B
$301M 0.95%
1,284,816
+26,904
+2% +$6.08M
KMX icon
20
CarMax
KMX
$8.39B
$286M 0.9%
2,194,451
+82,170
+4% +$11.5M
CRM icon
21
Salesforce
CRM
$154B
$284M 0.89%
1,119,501
+17,726
+2% +$4.98M
POOL icon
22
Pool Corp
POOL
$7.05B
$277M 0.87%
488,790
+2,878
+0.6% +$1.51M
JPM icon
23
JPMorgan Chase
JPM
$916B
$274M 0.86%
1,728,015
+71,192
+4% +$11.7M
DOCU
24
DocuSign
DOCU
$11.1B
$270M 0.85%
1,774,789
+52,987
+3% +$12.1M
ABT icon
25
Abbott
ABT
$188B
$268M 0.84%
1,900,866
+83,276
+5% +$10.7M
1
2 3 4 5

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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.