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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 | |
|---|---|---|---|---|---|---|
51
Procter & Gamble
PG
$336B
| $115M | 0.43% |
847,928
-3,812
| -0.4% | -$497K |
|
52
Chewy
CHWY
$9.15B
| $114M | 0.43% |
1,343,174
-101,388
| -7% | -$9.87M |
|
53
Guidewire Software
GWRE
$14.4B
| $112M | 0.42% |
1,102,940
-33,599
| -3% | -$3.91M |
|
54
Illinois Tool Works
ITW
$83.5B
| $109M | 0.41% |
493,600
-4,097
| -0.8% | -$851K |
|
55
TransDigm Group
TDG
$69B
| $109M | 0.41% |
184,965
-929
| -0.5% | -$547K |
|
56
Fortive
FTV
$18.6B
| $108M | 0.41% |
2,029,721
-401,781
| -17% | -$20.8M |
|
57
Union Pacific
UNP
$175B
| $106M | 0.4% |
482,035
+6,707
| +1% | +$1.41M |
|
58
Vanguard FTSE Developed Markets ETF
VEA
$238B
| $104M | 0.39% |
2,122,852
+11,621
| +0.6% | +$568K |
|
59
Amphenol
APH
$211B
| $103M | 0.39% |
3,127,442
-74,094
| -2% | -$2.41M |
|
60
Walmart Inc
WMT
$921B
| $99.6M | 0.38% |
2,198,766
+30,750
| +1% | +$1.42M |
|
61
Ametek
AME
$59.4B
| $98.2M | 0.37% |
768,575
+19,205
| +3% | +$2.32M |
|
|
EXAS
62
DELISTED
Exact Sciences
EXAS
| $95.5M | 0.36% |
724,889
+37,322
| +5% | +$5.11M |
|
63
iShares Core S&P 500 ETF
IVV
$905B
| $93.7M | 0.35% |
235,464
-9,583
| -4% | -$3.71M |
|
|
ATVI
64
DELISTED
Activision Blizzard
ATVI
| $93.1M | 0.35% |
1,000,945
-4,910
| -0.5% | -$462K |
|
|
SPLK
65
DELISTED
Splunk Inc
SPLK
| $92.2M | 0.35% |
680,805
+14,328
| +2% | +$2.23M |
|
66
Cintas
CTAS
$81.9B
| $91.5M | 0.35% |
1,072,348
+40,852
| +4% | +$3.46M |
|
67
Bristol-Myers Squibb
BMY
$130B
| $90M | 0.34% |
1,426,206
+30,778
| +2% | +$1.91M |
|
68
Vanguard Dividend Appreciation ETF
VIG
$115B
| $87.8M | 0.33% |
597,089
-474,589
| -44% | -$67.5M |
|
69
Trex
TREX
$5.04B
| $87.3M | 0.33% |
953,403
+8,098
| +0.9% | +$762K |
|
70
ServiceNow
NOW
$129B
| $86.8M | 0.33% |
867,455
-47,155
| -5% | -$4.98M |
|
|
COUP
71
DELISTED
Coupa Software Incorporated
COUP
| $86.4M | 0.33% |
339,658
+25,327
| +8% | +$7.98M |
|
72
Kornit Digital
KRNT
$816M
| $85.7M | 0.32% |
864,432
-33,587
| -4% | -$3.32M |
|
73
Goosehead Insurance
GSHD
$2.31B
| $84.9M | 0.32% |
791,835
+15,050
| +2% | +$2.04M |
|
74
American Express
AXP
$232B
| $82.4M | 0.31% |
582,400
+159,379
| +38% | +$21.1M |
|
75
Coca-Cola
KO
$374B
| $79.3M | 0.3% |
1,505,403
+525,676
| +54% | +$26.5M |
|
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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.