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William Blair & Company Portfolio holdings
AUM
$38.4B
1-Year Est. Return
25.71%
This Fund
S&P 500
This Quarter
Est. Return
+2.39%
1 Year Est. Return
+25.71%
3 Year Est. Return
+88.7%
5 Year Est. Return
+104.53%
10 Year Est. Return
+665.86%
AUM
$26.5B
AUM Growth
-$769M
(-2.8%)
Cap. Flow
-$1.09B
Cap. Flow
% of AUM
-4.11%
Top 10 Holdings %
Top 10 Hldgs %
22.54%
Holding
1,941
New
123
Increased
715
Reduced
742
Closed
84
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
CarMax
KMX
|
+$73M |
| 2 |
OSH
Oak Street Health, Inc.
OSH
|
+$60.6M |
| 3 |
iRhythm Holdings
IRTC
|
+$51.2M |
| 4 |
DexCom
DXCM
|
+$39.4M |
| 5 |
Aon
AON
|
+$30.5M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$449M |
| 2 |
Vanguard Morningstar Growth ETF
VUG
|
+$271M |
| 3 |
Amazon
AMZN
|
+$157M |
| 4 |
Microsoft
MSFT
|
+$83.3M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$78.4M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 25.67% |
| 2 | Healthcare | 19.26% |
| 3 | Financials | 11.68% |
| 4 | Consumer Discretionary | 10.53% |
| 5 | Industrials | 9.66% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
26
Intercontinental Exchange
ICE
$85.1B
| $201M | 0.76% |
1,801,621
+33,630
| +2% | +$3.82M |
|
27
Walt Disney
DIS
$177B
| $194M | 0.73% |
1,050,642
+52,323
| +5% | +$9.65M |
|
28
Home Depot
HD
$350B
| $193M | 0.73% |
632,409
+9,583
| +2% | +$2.64M |
|
29
Stryker
SYK
$131B
| $187M | 0.71% |
768,838
+26,657
| +4% | +$6.39M |
|
30
Fastenal
FAST
$60.1B
| $180M | 0.68% |
7,165,796
+38,180
| +0.5% | +$913K |
|
31
Tyler Technologies
TYL
$13B
| $174M | 0.66% |
409,783
-3,260
| -0.8% | -$1.41M |
|
32
Intuit
INTU
$91.5B
| $173M | 0.65% |
451,460
+3,843
| +0.9% | +$1.48M |
|
33
Accenture
ACN
$108B
| $171M | 0.65% |
620,107
-8,915
| -1% | -$2.3M |
|
34
American Tower
AMT
$79.2B
| $169M | 0.64% |
707,634
+34,931
| +5% | +$7.78M |
|
35
Pool Corp
POOL
$7.28B
| $165M | 0.62% |
479,132
+68,292
| +17% | +$23.8M |
|
36
Meta Platforms (Facebook)
META
$1.52T
| $160M | 0.6% |
543,510
-73,950
| -12% | -$19.9M |
|
37
Copart
CPRT
$26.9B
| $153M | 0.58% |
5,647,564
+108,300
| +2% | +$3.05M |
|
38
Johnson & Johnson
JNJ
$621B
| $153M | 0.58% |
928,270
+3,014
| +0.3% | +$488K |
|
39
Costco
COST
$418B
| $152M | 0.57% |
430,774
+41,439
| +11% | +$14.4M |
|
40
Verisk Analytics
VRSK
$23.4B
| $148M | 0.56% |
834,885
-9,347
| -1% | -$1.71M |
|
41
Watsco Inc
WSO
$13.1B
| $147M | 0.56% |
564,359
+4,333
| +0.8% | +$1.07M |
|
42
lululemon athletica
LULU
$14B
| $138M | 0.52% |
450,490
+41,798
| +10% | +$13.7M |
|
43
Twilio
TWLO
$38.8B
| $133M | 0.5% |
391,320
-20,036
| -5% | -$7.5M |
|
44
Progressive
PGR
$123B
| $133M | 0.5% |
1,386,954
+117,164
| +9% | +$10.6M |
|
45
AbbVie
ABBV
$439B
| $132M | 0.5% |
1,218,223
+10,726
| +0.9% | +$1.15M |
|
|
ABMD
46
DELISTED
Abiomed Inc
ABMD
| $129M | 0.49% |
403,873
+7,891
| +2% | +$2.53M |
|
|
47
Aon
AON
$75.2B
| $128M | 0.48% |
554,704
+138,463
| +33% | +$30.5M |
|
48
UnitedHealth
UNH
$364B
| $124M | 0.47% |
333,298
+2,895
| +0.9% | +$1M |
|
49
Okta
OKTA
$26.2B
| $121M | 0.46% |
548,766
+19,467
| +4% | +$4.89M |
|
50
Teladoc Health
TDOC
$1.23B
| $119M | 0.45% |
652,295
-83,655
| -11% | -$19.4M |
|
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William Blair & Company's Q1 2021 Portfolio in Review
As of Q1 2021, William Blair & Company held 1,941 positions worth $26.5B, down 2.8% from $27.3B the previous quarter. Its ten largest holdings account for 23% of the portfolio.
William Blair & Company withdrew a net $1.09B in Q1 2021, closing 84 positions and reducing 742 holdings. Its most notable exit was HMS Holdings Corp., an estimated $7.64M position sold in full.
By sector, the portfolio is most concentrated in Technology at 26% of assets, down from 28% a quarter earlier, followed by Healthcare and Financials.
Against the trend, William Blair & Company opened a new position in Oak Street Health, Inc. worth $59.1M.
- William Blair & Company's largest Q1 2021 buy was Oak Street Health, Inc.: 1,089,318 shares worth $59.1M.
- William Blair & Company added most to CarMax in Q1 2021, an estimated $73M increase.
- William Blair & Company's biggest Q1 2021 reduction was Apple, cutting an estimated $449M.
- William Blair & Company fully exited HMS Holdings Corp. in Q1 2021, selling an estimated $7.64M.
- William Blair & Company's ten largest holdings make up 23% of its $26.5B portfolio in Q1 2021.
- William Blair & Company opened 123 new positions and closed 84 in Q1 2021.
- William Blair & Company's portfolio value fell 2.8% quarter-over-quarter to $26.5B.
Based on William Blair & Company's 13F filing for Q1 2021, filed 13 May 2021.