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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 | |
|---|---|---|---|---|---|---|
776
iShares S&P Mid-Cap 400 Value ETF
IJJ
$9.08B
| $1.46M | 0.01% |
14,272
-1,300
| -8% | -$124K |
|
777
ARK Innovation ETF
ARKK
$6.54B
| $1.45M | 0.01% |
12,101
-214
| -2% | -$29K |
|
778
Hormel Foods
HRL
$13.4B
| $1.44M | 0.01% |
30,181
+634
| +2% | +$30K |
|
779
Merit Medical Systems
MMSI
$5.4B
| $1.44M | 0.01% |
23,994
-328
| -1% | -$18.8K |
|
780
Martin Marietta Materials
MLM
$32.7B
| $1.43M | 0.01% |
4,263
+94
| +2% | +$30K |
|
781
Humana
HUM
$46.2B
| $1.43M | 0.01% |
3,411
-161
| -5% | -$64.3K |
|
|
IPG
782
DELISTED
Interpublic Group of Companies
IPG
| $1.43M | 0.01% |
48,809
+7,117
| +17% | +$188K |
|
783
iShares MBS ETF
MBB
$39.2B
| $1.42M | 0.01% |
13,105
+1,935
| +17% | +$212K |
|
784
Brookfield Infrastructure Partners
BIP
$18.4B
| $1.41M | 0.01% |
39,776
-1,450
| -4% | -$50.5K |
|
785
Arrowhead Research
ARWR
$12.1B
| $1.41M | 0.01% |
21,218
-922
| -4% | -$71.5K |
|
786
RPM International
RPM
$14.5B
| $1.41M | 0.01% |
15,294
-2,500
| -14% | -$216K |
|
787
AvalonBay Communities
AVB
$26.3B
| $1.4M | 0.01% |
7,561
+354
| +5% | +$61.9K |
|
788
SAP
SAP
$242B
| $1.39M | 0.01% |
11,323
+4,079
| +56% | +$517K |
|
|
B
789
Barrick Mining
B
$67.3B
| $1.39M | 0.01% |
70,095
+41,236
| +143% | +$889K |
|
790
Royal Caribbean
RCL
$82.9B
| $1.38M | 0.01% |
16,168
+4,544
| +39% | +$360K |
|
791
Quanta Services
PWR
$101B
| $1.38M | 0.01% |
15,721
+2,037
| +15% | +$162K |
|
|
BECN
792
DELISTED
Beacon Roofing Supply, Inc.
BECN
| $1.38M | 0.01% |
26,372
-1,788
| -6% | -$83.5K |
|
|
SLCA
793
DELISTED
U.S. SILICA HOLDINGS, INC.
SLCA
| $1.38M | 0.01% |
112,273
-2,065
| -2% | -$22.5K |
|
794
Vanguard Russell 3000 ETF
VTHR
$4.89B
| $1.37M | 0.01% |
7,421
| – | – |
|
795
State Street Consumer Staples Select Sector SPDR ETF
XLP
$14.9B
| $1.37M | 0.01% |
20,060
+1,874
| +10% | +$123K |
|
796
Snap
SNAP
$8.96B
| $1.37M | 0.01% |
26,187
-436
| -2% | -$25.1K |
|
797
State Street SPDR S&P Metals & Mining ETF
XME
$4.46B
| $1.36M | 0.01% |
34,118
+8,608
| +34% | +$317K |
|
798
HP
HPQ
$28.6B
| $1.35M | 0.01% |
42,575
+276
| +0.7% | +$7.62K |
|
799
Rayonier
RYN
$6.54B
| $1.35M | 0.01% |
46,212
| – | – |
|
800
Inspire Medical Systems
INSP
$1.68B
| $1.35M | 0.01% |
6,527
+335
| +5% | +$71.2K |
|
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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.