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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 | |
|---|---|---|---|---|---|---|
1026
Vicor
VICR
$10.4B
| $685K | ﹤0.01% |
8,060
| – | – |
|
1027
Integer Holdings
ITGR
$4.25B
| $680K | ﹤0.01% |
7,383
| – | – |
|
|
EB
1028
DELISTED
Eventbrite
EB
| $677K | ﹤0.01% |
+30,548
| New | +$615K |
|
1029
AeroVironment
AVAV
$9.59B
| $672K | ﹤0.01% |
5,794
-5,635
| -49% | -$658K |
|
1030
Eaton Vance Tax-Managed Global Diversified Equity Income Fund
EXG
$3.09B
| $668K | ﹤0.01% |
71,788
| – | – |
|
1031
Titan International
TWI
$438M
| $664K | ﹤0.01% |
71,500
+5,400
| +8% | +$42.4K |
|
1032
Quanterix
QTRX
$135M
| $661K | ﹤0.01% |
11,310
-5,100
| -31% | -$345K |
|
1033
Sonos
SONO
$1.96B
| $661K | ﹤0.01% |
17,640
-110
| -0.6% | -$3.71K |
|
1034
Granite Construction
GVA
$5.41B
| $660K | ﹤0.01% |
16,400
-35
| -0.2% | -$1.21K |
|
|
DXYN
1035
DELISTED
Dixie Group Inc
DXYN
| $657K | ﹤0.01% |
221,255
| – | – |
|
1036
WisdomTree Yield Enhanced US Aggregate Bond Fund
AGGY
$926M
| $655K | ﹤0.01% |
12,787
+14
| +0.1% | +$734 |
|
1037
Teleflex
TFX
$5.82B
| $654K | ﹤0.01% |
1,573
-548
| -26% | -$219K |
|
1038
Eastman Chemical
EMN
$8.43B
| $651K | ﹤0.01% |
5,915
-11,759
| -67% | -$1.28M |
|
|
INOV
1039
DELISTED
Inovalon Holdings, Inc. Class A Common Stock
INOV
| $651K | ﹤0.01% |
+22,625
| New | +$582K |
|
1040
iShares Convertible Bond ETF
ICVT
$7.64B
| $650K | ﹤0.01% |
6,622
+120
| +2% | +$12.3K |
|
1041
Invesco NASDAQ Internet ETF
PNQI
$544M
| $646K | ﹤0.01% |
14,000
| – | – |
|
1042
Franco-Nevada
FNV
$44.7B
| $644K | ﹤0.01% |
5,141
+6
| +0.1% | +$722 |
|
1043
Rocket Pharmaceuticals
RCKT
$367M
| $644K | ﹤0.01% |
14,506
-4,060
| -22% | -$223K |
|
1044
Varonis Systems
VRNS
$5.26B
| $641K | ﹤0.01% |
12,486
-441
| -3% | -$26.1K |
|
|
LYRA
1045
DELISTED
LYRA THERAPEUTICS INC
LYRA
| $637K | ﹤0.01% |
+1,100
| New | +$687K |
|
1046
Box
BOX
$4.66B
| $635K | ﹤0.01% |
27,650
+14,350
| +108% | +$279K |
|
1047
Ovid Therapeutics
OVID
$523M
| $629K | ﹤0.01% |
156,482
+18,822
| +14% | +$62.5K |
|
1048
Allison Transmission
ALSN
$10.2B
| $625K | ﹤0.01% |
+15,301
| New | +$637K |
|
1049
Invesco Dorsey Wright Emerging Markets Momentum ETF
PIE
$250M
| $624K | ﹤0.01% |
26,000
+9,715
| +60% | +$238K |
|
1050
Adeia
ADEA
$3.16B
| $623K | ﹤0.01% |
108,168
-5,470
| -5% | -$31.5K |
|
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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.